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2004 National Survey on Drug Use & Health:  Detailed Tables

50428

Table 4.1C Standard Errors of Numbers (in Thousands) of Persons Who Initiated Marijuana Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 78 51 61 0.4 2.5 3.1
1966 77 47 60 0.4 2.2 2.9
1967 92 56 74 0.3 2.7 3.5
1968 122 82 87 0.2 3.9 3.9
1969 122 68 101 0.2 3.2 4.8
1970 127 79 100 0.2 3.7 4.4
1971 119 67 101 0.2 3.1 5.0
1972 117 75 89 0.2 3.5 4.3
1973 124 76 96 0.2 3.5 5.0
1974 113 80 80 0.3 3.9 3.8
1975 116 82 81 0.2 4.1 4.0
1976 116 83 79 0.3 4.2 4.1
1977 116 84 80 0.3 4.2 3.7
1978 115 89 76 0.3 4.7 3.9
1979 105 78 73 0.3 4.3 3.5
1980 94 72 63 0.3 3.9 3.5
1981 90 66 65 0.3 3.8 3.8
1982 89 69 60 0.4 3.9 3.3
1983 93 68 62 0.4 3.7 3.7
1984 82 63 55 0.3 3.6 3.3
1985 91 70 56 0.3 4.1 3.1
1986 82 62 56 0.3 3.6 3.4
1987 75 58 49 0.4 3.4 3.3
1988 75 59 43 0.5 3.5 2.8
1989 69 49 49 0.3 2.9 3.2
1990 63 45 45 0.5 2.7 2.6
1991 67 48 48 0.5 2.8 2.8
1992 73 51 49 0.2 2.9 3.2
1993 68 45 50 0.3 2.5 3.0
1994 70 45 52 0.3 2.4 3.3
1995 68 37 56 0.2 1.9 3.4
1996 62 37 48 0.2 1.9 2.9
1997 63 39 46 0.2 2.0 2.7
1998 54 37 39 0.2 1.8 2.4
1999 54 36 39 0.2 1.8 2.3
2000 57 39 37 0.2 1.9 2.1
2001 53 34 39 0.2 1.7 2.0
20022 57 42 38 0.2 2.1 2.2
20033 79 58 55 0.2 2.8 3.1

50428

Table 4.2C Standard Errors of Numbers (in Thousands) of Persons Who Initiated Cocaine Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 26 * 23 2.0 * 0.9
1966 15 * 14 1.6 * *
1967 32 * 31 2.0 * 1.2
1968 38 22 32 1.3 1.0 1.2
1969 29 13 26 1.3 0.5 0.9
1970 37 18 32 0.5 0.8 1.3
1971 50 21 46 0.6 0.9 1.6
1972 60 25 54 0.4 1.1 2.0
1973 59 26 53 0.5 1.1 1.8
1974 70 26 65 0.5 1.1 1.8
1975 62 24 56 0.4 1.0 1.7
1976 68 26 63 0.3 1.1 2.1
1977 77 30 70 0.4 1.3 2.0
1978 72 29 66 0.3 1.3 2.0
1979 74 30 67 0.2 1.4 2.3
1980 77 35 69 0.4 1.6 1.9
1981 77 34 68 0.3 1.6 2.3
1982 79 32 71 0.5 1.5 2.0
1983 81 30 77 0.3 1.5 2.6
1984 74 33 68 0.3 1.6 2.1
1985 70 29 64 0.4 1.5 2.0
1986 66 28 62 0.4 1.5 1.9
1987 62 26 58 0.4 1.4 2.0
1988 63 24 57 0.4 1.3 2.0
1989 57 18 55 0.4 1.0 1.9
1990 54 22 50 0.5 1.2 1.5
1991 44 19 40 0.5 1.0 1.3
1992 53 23 47 0.7 1.2 1.3
1993 41 15 38 0.6 0.8 1.2
1994 45 14 42 0.5 0.7 1.5
1995 43 14 41 0.5 0.7 1.5
1996 44 14 43 0.6 0.7 1.4
1997 41 14 38 0.3 0.6 1.4
1998 39 14 36 0.4 0.6 1.2
1999 36 14 34 0.4 0.6 1.0
2000 38 16 35 0.4 0.7 1.1
2001 43 16 39 0.4 0.7 1.0
20022 42 19 37 0.3 0.8 1.0
20033 63 29 55 0.4 1.1 1.8

50428

Table 4.3C Standard Errors of Numbers (in Thousands) of Persons Who Initiated Crack Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 * * * * * *
1969 7 * * * * *
1970 * * * * * *
1971 * * * * * *
1972 9 * * * * *
1973 17 * * * * *
1974 7 * * * * *
1975 13 * 12 2.1 * 0.2
1976 12 * 12 * * *
1977 15 * 13 1.0 * 0.4
1978 23 * 19 1.1 * 0.5
1979 17 * 16 1.2 * 0.4
1980 23 13 19 1.3 0.6 0.4
1981 23 7 22 0.9 0.3 0.6
1982 26 8 24 1.1 0.4 0.4
1983 29 6 28 1.1 0.3 0.6
1984 35 10 34 0.8 0.5 0.7
1985 41 12 41 1.0 0.6 0.8
1986 30 10 28 1.0 0.5 0.7
1987 35 11 31 0.8 0.6 0.8
1988 41 11 38 0.7 0.6 0.7
1989 35 4 35 0.5 0.2 1.0
1990 43 10 41 0.8 0.5 0.7
1991 36 10 34 0.6 0.5 0.8
1992 36 8 35 0.9 0.4 0.8
1993 34 9 32 1.0 0.4 0.7
1994 33 8 32 0.8 0.4 0.8
1995 33 7 33 1.1 0.3 0.7
1996 35 7 34 0.8 0.3 0.8
1997 31 7 30 0.9 0.3 0.7
1998 27 8 25 0.5 0.4 0.7
1999 31 7 30 0.8 0.3 0.6
2000 31 8 30 0.9 0.3 0.5
2001 23 7 21 1.0 0.3 0.4
20022 30 9 28 0.7 0.4 0.5
20033 37 12 34 1.1 0.5 0.6

50428

Table 4.4C Standard Errors of Numbers (in Thousands) of Persons Who Initiated Heroin Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 * * * * * *
1966 * * * * * *
1967 15 * 8 * * 0.4
1968 26 23 12 0.6 1.1 0.5
1969 11 * 11 0.8 * 0.4
1970 28 13 25 2.5 0.6 0.6
1971 23 8 22 0.7 0.3 0.8
1972 31 5 30 0.6 0.2 1.1
1973 28 9 29 0.9 0.4 0.9
1974 31 16 27 0.7 0.6 0.9
1975 15 8 13 1.0 0.3 0.4
1976 18 * 17 1.0 * 0.5
1977 19 4 19 0.9 0.2 0.5
1978 16 8 14 0.9 0.4 0.4
1979 17 8 15 1.0 0.3 0.4
1980 17 * 15 0.9 * 0.5
1981 19 5 18 0.7 0.3 0.5
1982 13 * 13 0.7 * 0.4
1983 18 * 18 1.3 * 0.4
1984 18 8 16 1.0 0.4 0.4
1985 9 * 9 0.9 * 0.2
1986 16 * 13 1.2 * 0.3
1987 16 4 15 1.4 0.2 0.4
1988 20 * 18 1.0 * 0.5
1989 16 * 16 1.0 * 0.4
1990 13 * 12 1.3 * 0.3
1991 18 * 18 1.2 * 0.4
1992 19 4 18 1.1 0.2 0.3
1993 13 3 12 1.1 0.1 0.3
1994 15 4 14 1.3 0.2 0.3
1995 18 5 17 1.0 0.2 0.3
1996 18 4 18 0.9 0.2 0.5
1997 14 5 13 1.4 0.2 0.3
1998 16 5 16 0.7 0.2 0.4
1999 14 4 13 1.3 0.2 0.3
2000 10 5 9 0.7 0.2 0.2
2001 14 6 14 1.0 0.2 0.4
20022 17 5 16 0.9 0.2 0.3
20033 16 10 13 1.4 0.4 0.4

50428

Table 4.5C Standard Errors of Numbers (in Thousands) of Persons Who Initiated Hallucinogen Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 32 20 26 1.1 1.0 1.3
1966 30 17 24 2.0 0.8 1.0
1967 39 26 29 0.7 1.2 1.2
1968 58 40 43 0.9 1.7 1.6
1969 68 37 57 0.3 1.7 2.4
1970 71 41 59 0.2 1.8 2.4
1971 71 47 55 0.3 2.0 2.2
1972 71 44 54 0.2 1.9 2.1
1973 64 38 48 0.2 1.6 1.9
1974 62 38 47 0.3 1.6 1.6
1975 66 42 49 0.2 1.8 1.9
1976 59 36 46 0.4 1.6 1.6
1977 57 38 44 0.4 1.7 1.6
1978 57 37 42 0.2 1.7 1.6
1979 61 40 43 0.3 1.8 1.4
1980 66 42 50 0.4 2.0 1.6
1981 61 37 47 0.3 1.8 1.6
1982 64 35 51 0.6 1.7 1.5
1983 49 31 39 0.3 1.5 1.4
1984 50 28 41 0.4 1.4 1.4
1985 54 32 39 0.2 1.6 1.5
1986 56 31 44 0.3 1.6 1.6
1987 48 31 34 0.4 1.6 1.3
1988 51 29 40 0.3 1.6 1.4
1989 47 25 39 0.3 1.4 1.5
1990 45 29 35 0.4 1.5 1.2
1991 44 27 35 0.3 1.4 1.3
1992 47 31 36 0.3 1.6 1.3
1993 44 25 35 0.3 1.3 1.4
1994 47 24 39 0.2 1.2 1.6
1995 42 20 36 0.2 1.0 1.4
1996 45 20 39 0.5 0.9 1.5
1997 40 19 35 0.3 0.9 1.4
1998 42 21 35 0.2 0.9 1.2
1999 43 21 35 0.2 0.9 1.3
2000 45 23 37 0.2 1.0 1.3
2001 42 21 37 0.2 0.9 1.2
20022 40 22 33 0.2 0.9 1.1
20033 56 32 46 0.5 1.3 1.3

50428

Table 4.6C Standard Errors of Numbers (in Thousands) of Persons Who Initiated LSD Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 21 * 16 4.4 * 0.4
1966 29 16 24 2.5 0.7 0.9
1967 27 17 21 1.0 0.8 0.8
1968 53 42 31 0.7 1.9 1.1
1969 65 33 58 0.4 1.5 2.3
1970 68 37 56 0.2 1.6 2.3
1971 61 37 50 0.4 1.6 1.9
1972 72 45 53 0.2 1.9 2.0
1973 60 36 48 0.3 1.5 1.8
1974 55 35 40 0.3 1.5 1.5
1975 52 33 38 0.3 1.4 1.3
1976 50 33 40 0.3 1.4 1.4
1977 52 34 39 0.4 1.5 1.4
1978 45 28 33 0.2 1.2 1.2
1979 51 36 38 0.3 1.6 1.2
1980 59 36 47 0.4 1.7 1.4
1981 52 32 42 0.4 1.6 1.3
1982 49 31 37 0.5 1.5 1.1
1983 43 28 35 0.3 1.3 1.2
1984 42 23 36 0.6 1.1 1.2
1985 45 29 33 0.5 1.4 1.0
1986 40 25 32 0.3 1.3 1.1
1987 43 29 29 0.3 1.5 1.0
1988 44 28 34 0.3 1.5 1.2
1989 43 23 35 0.5 1.3 1.2
1990 40 27 28 0.4 1.4 1.0
1991 38 26 28 0.3 1.4 1.1
1992 42 29 33 0.2 1.5 1.3
1993 37 23 29 0.2 1.2 1.1
1994 41 25 32 0.2 1.2 1.2
1995 37 21 31 0.1 1.0 1.3
1996 38 19 33 0.2 0.9 1.3
1997 33 15 29 0.2 0.7 1.2
1998 30 19 22 0.2 0.8 0.9
1999 26 17 21 0.2 0.7 0.7
2000 30 17 24 0.2 0.7 0.9
2001 25 15 20 0.2 0.6 0.7
20022 17 12 12 0.2 0.5 0.5
20033 30 17 24 0.6 0.7 0.7

50428

Table 4.7C Standard Errors of Numbers (in Thousands) of Persons Who Initiated PCP Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 31 30 * 0.6 1.4 *
1969 16 12 * 1.5 0.5 *
1970 30 17 25 0.6 0.7 0.9
1971 38 22 31 0.9 0.9 1.0
1972 47 27 38 0.8 1.1 1.2
1973 43 20 37 0.4 0.8 1.3
1974 43 29 31 0.4 1.2 1.0
1975 38 26 29 0.4 1.1 0.9
1976 42 27 32 0.7 1.1 1.0
1977 39 27 29 0.4 1.1 0.9
1978 40 22 33 0.7 0.9 0.8
1979 35 21 27 0.4 1.0 0.8
1980 33 20 26 0.7 0.9 0.7
1981 30 18 25 0.6 0.8 0.7
1982 31 14 28 0.8 0.6 0.7
1983 24 15 19 0.4 0.7 0.6
1984 20 9 18 0.5 0.4 0.6
1985 19 12 14 0.6 0.6 0.5
1986 22 9 19 0.7 0.5 0.6
1987 20 12 16 1.0 0.6 0.4
1988 17 10 15 1.4 0.5 0.4
1989 17 11 13 0.7 0.6 0.4
1990 13 9 10 1.8 0.5 0.3
1991 15 10 12 1.4 0.5 0.3
1992 18 6 17 0.6 0.3 0.6
1993 16 10 12 0.9 0.5 0.4
1994 13 10 8 0.3 0.5 0.3
1995 19 9 16 0.5 0.4 0.6
1996 14 6 12 0.7 0.3 0.4
1997 12 6 10 0.4 0.3 0.4
1998 10 7 7 0.4 0.3 0.2
1999 15 8 12 0.4 0.3 0.4
2000 14 8 11 0.6 0.3 0.3
2001 12 8 10 0.4 0.3 0.3
20022 12 9 8 0.3 0.3 0.3
20033 19 12 15 1.0 0.5 0.3

50428

Table 4.8C Standard Errors of Numbers (in Thousands) of Persons Who Initiated Ecstasy Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 * * * * * *
1969 * * * * * *
1970 * * * * * *
1971 * * * * * *
1972 9 * * * * *
1973 7 * * * * *
1974 * * * * * *
1975 * * * * * *
1976 15 * 15 1.5 * *
1977 * * * * * *
1978 6 * 4 * * *
1979 12 * 11 1.4 * 0.3
1980 11 * 10 1.9 * 0.2
1981 14 * 14 1.3 * 0.3
1982 9 6 7 1.0 0.3 0.2
1983 21 * 20 2.2 * 0.4
1984 21 * 21 1.5 * 0.5
1985 21 6 20 0.6 0.3 0.5
1986 25 9 23 1.0 0.4 0.6
1987 23 6 22 1.1 0.3 0.6
1988 29 12 25 1.1 0.6 0.7
1989 30 10 28 0.8 0.5 0.9
1990 28 7 27 1.2 0.4 0.6
1991 22 7 21 0.7 0.3 0.7
1992 30 7 30 1.1 0.3 0.7
1993 26 8 24 0.7 0.4 0.8
1994 28 11 25 0.7 0.5 0.8
1995 32 9 30 0.7 0.4 1.0
1996 35 9 33 1.3 0.4 0.9
1997 40 9 38 0.5 0.4 1.2
1998 46 11 45 0.3 0.5 1.3
1999 48 16 44 0.2 0.7 1.3
2000 50 19 46 0.3 0.8 1.2
2001 53 18 49 0.3 0.8 1.2
20022 49 18 44 0.5 0.7 1.1
20033 55 23 49 0.7 0.9 1.2

50428

Table 4.9C Standard Errors of Numbers (in Thousands) of Persons Who Initiated Inhalant Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 23 23 * 0.5 1.1 *
1966 34 31 14 0.6 1.4 0.6
1967 43 37 22 1.0 1.7 0.9
1968 37 28 24 1.2 1.2 0.7
1969 41 33 23 0.5 1.5 1.0
1970 40 27 30 0.5 1.1 1.2
1971 37 26 26 0.9 1.1 0.8
1972 39 30 24 0.8 1.3 0.7
1973 43 26 33 0.8 1.1 1.0
1974 44 24 36 0.7 1.0 1.1
1975 48 33 32 0.4 1.3 1.1
1976 49 34 36 0.4 1.5 1.1
1977 57 34 45 0.4 1.5 1.4
1978 48 35 33 0.4 1.5 1.0
1979 55 37 41 0.5 1.7 1.2
1980 50 37 32 0.6 1.7 0.9
1981 43 32 30 0.4 1.6 0.9
1982 45 31 33 0.5 1.4 0.9
1983 45 33 30 0.5 1.6 0.9
1984 44 30 32 0.5 1.5 1.0
1985 44 29 32 0.5 1.4 1.0
1986 42 30 29 0.6 1.5 0.8
1987 43 29 30 0.5 1.5 0.9
1988 40 30 26 0.3 1.5 0.9
1989 36 23 26 0.7 1.2 1.1
1990 41 26 29 0.3 1.4 1.1
1991 36 25 25 0.6 1.3 0.7
1992 39 28 25 0.2 1.5 1.0
1993 39 23 30 0.4 1.2 1.0
1994 28 20 20 0.3 1.0 0.8
1995 33 18 27 0.5 0.9 1.0
1996 28 16 24 0.3 0.7 0.9
1997 29 18 21 0.2 0.8 0.8
1998 30 20 23 0.4 0.8 0.8
1999 32 20 24 0.3 0.8 0.7
2000 34 23 22 0.3 0.9 0.7
2001 31 23 19 0.2 0.9 0.7
20022 36 29 20 0.2 1.1 0.7
20033 52 42 30 0.3 1.7 1.0

50428

Table 4.10C Standard Errors of Numbers (in Thousands) of Persons Who Initiated Nonmedical Use of Pain Relievers in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 30 14 26 3.5 * *
1966 16 11 11 3.5 0.5 *
1967 28 20 20 1.5 0.9 0.8
1968 41 25 33 0.8 1.1 1.4
1969 42 26 32 0.9 1.1 1.0
1970 47 30 37 1.2 1.2 1.3
1971 51 27 41 0.8 1.2 1.4
1972 47 20 42 0.8 0.8 1.4
1973 46 24 38 0.8 1.0 1.1
1974 47 26 39 0.7 1.1 1.2
1975 52 25 45 0.7 1.0 1.3
1976 45 24 37 0.9 1.0 0.9
1977 46 22 40 0.5 0.9 1.2
1978 42 25 32 0.6 1.1 0.9
1979 45 29 33 0.7 1.3 0.9
1980 45 23 38 0.8 1.0 0.8
1981 40 19 35 0.5 0.9 0.9
1982 39 23 33 1.0 1.0 0.8
1983 56 24 51 0.7 1.1 1.2
1984 45 16 43 1.1 0.8 1.0
1985 47 23 40 0.8 1.1 1.0
1986 53 15 52 0.9 0.7 1.1
1987 50 19 46 0.8 1.0 1.1
1988 44 16 41 0.7 0.8 1.1
1989 47 19 43 0.7 1.0 1.1
1990 43 15 40 0.6 0.8 1.1
1991 44 19 40 0.7 1.0 1.0
1992 51 20 48 0.7 1.0 1.2
1993 45 17 40 0.6 0.8 1.2
1994 55 17 51 0.7 0.8 1.2
1995 47 15 44 0.6 0.7 1.2
1996 51 15 49 0.4 0.7 1.6
1997 53 19 49 0.4 0.8 1.4
1998 55 21 52 0.6 0.9 1.2
1999 57 22 52 0.5 0.9 1.3
2000 68 26 61 0.5 1.1 1.5
2001 59 26 54 0.3 1.1 1.2
20022 75 33 68 0.5 1.4 1.5
20033 115 52 99 0.6 2.3 1.9

50428

Table 4.11C Standard Errors of Numbers (in Thousands) of Persons Who Initiated Nonmedical Use of OxyContin® in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2004 NSDUH
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 * * * * * *
1966 * * * * * *
1967 * * * * * *
1968 * * * * * *
1969 * * * * * *
1970 * * * * * *
1971 * * * * * *
1972 * * * * * *
1973 * * * * * *
1974 * * * * * *
1975 * * * * * *
1976 * * * * * *
1977 * * * * * *
1978 * * * * * *
1979 * * * * * *
1980 * * * * * *
1981 * * * * * *
1982 * * * * * *
1983 * * * * * *
1984 * * * * * *
1985 * * * * * *
1986 * * * * * *
1987 * * * * * *
1988 * * * * * *
1989 * * * * * *
1990 * * * * * *
1991 * * * * * *
1992 8 * * * * *
1993 20 * * * * *
1994 * * * * * *
1995 8 4 * 5.6 0.2 *
1996 18 5 * 0.9 0.3 *
1997 25 8 23 0.9 0.4 0.7
1998 25 9 23 1.5 0.4 0.7
1999 27 11 26 1.5 0.5 0.6
2000 52 11 51 2.7 0.4 0.8
2001 55 15 55 1.4 0.6 1.2
2002 51 16 49 1.0 0.7 0.9
2003 64 19 62 1.5 0.8 1.0

50428

Table 4.12C Standard Errors of Numbers (in Thousands) of Persons Who Initiated Nonmedical Use of Tranquilizers in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 19 12 14 1.2 0.6 *
1966 27 * * 3.0 * *
1967 28 * 26 1.6 * 0.9
1968 31 9 30 1.1 0.4 1.0
1969 36 25 27 0.8 1.1 1.0
1970 32 22 23 0.6 1.0 0.9
1971 36 18 30 2.7 0.8 0.9
1972 48 24 42 0.7 1.0 1.4
1973 49 24 45 0.8 1.0 1.3
1974 46 29 35 0.4 1.2 1.2
1975 47 23 41 0.6 1.0 1.2
1976 46 27 38 0.8 1.1 1.0
1977 45 25 37 0.8 1.0 1.0
1978 39 20 34 0.8 0.9 0.9
1979 44 25 34 0.6 1.1 0.9
1980 34 20 29 0.5 0.9 0.9
1981 39 19 34 0.6 0.9 1.0
1982 37 17 34 0.7 0.8 0.9
1983 41 13 39 0.8 0.6 1.1
1984 44 16 41 0.8 0.8 1.0
1985 41 18 37 1.1 0.9 0.9
1986 38 15 36 1.5 0.8 0.8
1987 35 10 34 0.6 0.5 0.8
1988 47 12 45 1.1 0.6 1.0
1989 35 12 33 0.8 0.6 0.9
1990 34 14 31 0.9 0.8 0.8
1991 34 13 31 1.0 0.6 0.7
1992 42 12 40 1.4 0.6 0.8
1993 44 14 42 1.3 0.7 0.9
1994 33 10 32 0.8 0.5 0.8
1995 43 11 42 1.1 0.5 0.8
1996 40 11 38 0.6 0.5 1.1
1997 36 12 33 0.6 0.5 0.8
1998 47 15 43 0.7 0.7 1.0
1999 40 14 38 0.5 0.6 0.9
2000 58 16 56 0.7 0.7 1.0
2001 46 17 41 0.5 0.7 0.9
20022 53 20 51 0.5 0.8 1.1
20033 84 28 80 0.7 1.1 1.3

50428

Table 4.13C Standard Errors of Numbers (in Thousands) of Persons Who Initiated Nonmedical Use of Stimulants in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 40 * 31 1.5 * 1.1
1966 38 17 34 0.7 0.8 1.6
1967 44 25 35 0.7 1.2 1.5
1968 51 32 39 0.4 1.5 1.7
1969 46 32 37 0.4 1.4 1.6
1970 60 33 50 0.4 1.4 2.0
1971 71 32 59 0.4 1.4 2.3
1972 53 28 45 0.3 1.2 1.6
1973 48 27 40 0.4 1.2 1.3
1974 46 29 37 0.4 1.2 1.4
1975 49 27 38 0.4 1.1 1.3
1976 50 27 40 0.6 1.1 1.3
1977 47 30 36 0.3 1.3 1.1
1978 50 28 40 0.6 1.2 1.2
1979 47 31 37 0.3 1.4 1.2
1980 50 31 37 0.3 1.4 1.2
1981 50 26 42 0.6 1.2 1.0
1982 50 27 40 0.5 1.3 1.2
1983 41 20 36 0.6 1.0 1.0
1984 39 25 30 0.6 1.2 0.9
1985 38 22 31 1.0 1.1 0.8
1986 37 20 29 0.5 1.0 0.9
1987 40 21 32 0.5 1.1 0.9
1988 33 21 26 0.6 1.1 0.8
1989 32 13 30 0.6 0.7 1.0
1990 34 19 26 0.6 1.0 0.8
1991 28 13 25 0.6 0.7 0.8
1992 28 17 23 0.7 0.9 0.6
1993 35 15 29 0.5 0.8 0.9
1994 33 14 30 0.6 0.7 0.9
1995 33 12 30 0.5 0.6 1.0
1996 35 14 32 0.5 0.6 1.0
1997 30 14 27 0.5 0.6 0.8
1998 32 15 28 0.5 0.6 0.8
1999 31 14 29 0.5 0.6 0.7
2000 34 16 31 0.5 0.6 0.8
2001 33 16 28 0.4 0.7 0.7
20022 35 19 30 0.5 0.7 0.7
20033 53 23 48 0.8 0.9 1.2

50428

Table 4.14C Standard Errors of Numbers (in Thousands) of Persons Who Initiated Nonmedical Use of Methamphetamine in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 14 * * * * *
1966 25 15 20 0.8 0.7 0.9
1967 31 20 23 0.9 0.9 1.0
1968 33 23 24 0.6 1.1 1.0
1969 42 29 32 0.8 1.3 1.2
1970 42 21 36 0.4 0.9 1.4
1971 55 25 51 0.4 1.1 1.9
1972 40 23 34 0.2 1.0 1.3
1973 42 21 36 0.6 0.9 1.1
1974 39 23 32 0.4 1.0 1.2
1975 39 23 30 0.4 0.9 1.1
1976 38 23 29 0.5 1.0 0.9
1977 39 26 28 0.4 1.1 0.8
1978 34 20 25 0.4 0.9 0.8
1979 44 31 30 0.3 1.4 1.0
1980 38 25 25 0.3 1.1 0.8
1981 36 21 28 0.5 1.0 0.8
1982 38 20 31 0.4 1.0 1.0
1983 36 17 32 0.6 0.8 0.8
1984 34 22 26 0.4 1.1 0.8
1985 29 17 25 0.6 0.8 0.7
1986 35 19 27 0.5 1.0 0.9
1987 36 19 29 0.6 1.0 0.8
1988 28 15 23 0.5 0.8 0.7
1989 29 12 27 0.7 0.6 0.8
1990 26 13 22 0.6 0.7 0.7
1991 27 11 25 0.6 0.6 0.8
1992 25 14 20 0.7 0.7 0.6
1993 32 15 27 0.6 0.7 0.9
1994 28 11 26 0.6 0.5 0.8
1995 27 10 26 0.5 0.5 0.9
1996 27 10 26 0.6 0.4 0.8
1997 22 10 20 0.4 0.4 0.6
1998 26 12 23 0.6 0.5 0.6
1999 20 9 19 0.6 0.4 0.5
2000 20 10 17 0.4 0.4 0.5
2001 22 11 18 0.4 0.4 0.5
20022 28 11 25 0.7 0.4 0.4
20033 39 16 36 1.2 0.6 0.6

50428

Table 4.15C Standard Errors of Numbers (in Thousands) of Persons Who Initiated Nonmedical Use of Sedatives in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 19 19 * 1.1 0.9 *
1966 16 * 14 2.4 * 0.5
1967 36 23 27 0.9 1.1 1.2
1968 38 27 26 0.9 1.2 1.1
1969 48 36 32 1.1 1.6 1.1
1970 55 42 35 0.4 1.8 1.4
1971 47 27 40 0.7 1.2 1.4
1972 51 23 44 0.4 1.0 1.6
1973 49 30 39 0.4 1.3 1.4
1974 50 32 40 0.4 1.3 1.3
1975 46 26 37 0.6 1.1 1.2
1976 43 29 32 0.5 1.2 1.0
1977 45 24 38 0.4 1.0 1.2
1978 43 30 33 0.7 1.3 0.8
1979 42 26 33 0.5 1.2 1.0
1980 38 23 29 0.4 1.1 0.8
1981 37 17 32 1.1 0.8 0.8
1982 43 21 37 1.2 1.0 0.9
1983 30 11 27 0.7 0.5 0.8
1984 26 12 23 0.7 0.6 0.7
1985 21 12 17 1.1 0.6 0.4
1986 16 9 13 1.4 0.5 0.4
1987 21 6 20 1.7 0.3 0.4
1988 18 4 18 1.2 0.2 0.3
1989 16 6 15 1.4 0.3 0.4
1990 17 7 15 1.2 0.4 0.4
1991 15 5 14 2.1 0.2 0.2
1992 16 9 14 1.7 0.5 0.3
1993 17 9 15 1.6 0.5 0.4
1994 15 4 15 1.5 0.2 0.4
1995 20 5 19 3.1 0.2 0.3
1996 14 6 14 1.6 0.2 0.4
1997 15 6 13 1.1 0.3 0.3
1998 19 6 18 2.9 0.2 0.3
1999 19 6 18 2.6 0.2 0.3
2000 18 7 16 0.9 0.3 0.3
2001 19 8 16 1.2 0.3 0.3
20022 33 9 31 2.0 0.3 0.4
20033 37 13 34 2.7 0.5 0.6

50428

Table 4.16C Standard Errors of Numbers (in Thousands) of Persons Who Initiated Alcohol Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 154 115 105 0.3 6.5 16.8
1966 136 103 88 0.1 5.8 14.4
1967 149 107 106 0.2 6.2 15.8
1968 150 111 97 0.2 6.2 14.4
1969 157 111 111 0.2 6.1 16.7
1970 147 103 108 0.2 5.4 17.6
1971 131 88 93 0.2 4.6 15.3
1972 138 99 94 0.2 5.2 17.1
1973 128 99 76 0.1 5.5 13.7
1974 130 102 75 0.3 5.5 13.2
1975 127 98 75 0.2 5.5 13.3
1976 114 88 71 0.2 5.0 12.2
1977 124 97 73 0.2 5.7 13.4
1978 116 98 60 0.1 6.0 11.2
1979 119 97 67 0.2 6.0 13.3
1980 111 92 63 0.2 5.9 12.2
1981 114 93 68 0.2 6.0 13.0
1982 113 93 64 0.2 6.1 12.6
1983 100 81 60 0.2 5.5 12.7
1984 109 90 60 0.2 6.0 12.2
1985 113 90 63 0.2 6.0 13.2
1986 104 81 60 0.2 5.7 12.7
1987 99 74 62 0.2 5.2 12.7
1988 87 69 56 0.1 5.2 12.0
1989 100 83 62 0.1 5.9 12.7
1990 96 70 58 0.2 5.1 12.3
1991 88 66 59 0.2 4.9 12.5
1992 88 68 58 0.2 4.3 11.9
1993 83 65 55 0.1 4.1 11.6
1994 83 55 60 0.1 3.3 12.1
1995 77 48 53 0.2 2.7 11.3
1996 74 48 54 0.2 2.8 11.1
1997 72 47 51 0.1 2.6 9.3
1998 66 45 49 0.1 2.6 9.1
1999 65 47 44 0.2 2.6 8.5
2000 72 51 47 0.1 2.9 8.6
20012 85 63 53 0.2 3.8 10.0
20023 111 85 69 0.1 4.9 13.3
20033 -- -- 96 -- 5.3 14.2

50428

Table 4.17C Standard Errors of Numbers (in Thousands) of Persons Who Initiated Alcohol Use in the United States by Underage and Legal Drinking Age Groups, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 21 21 or Older 12-20 21-25
1965 154 138 69 0.3 6.5 22.8
1966 136 125 53 0.1 5.8 19.9
1967 149 140 62 0.2 6.6 21.9
1968 150 136 57 0.2 6.2 18.2
1969 157 145 67 0.2 6.4 22.4
1970 147 127 72 0.2 5.9 25.7
1971 131 111 63 0.2 5.1 20.7
1972 138 118 71 0.2 5.5 26.7
1973 128 117 54 0.1 5.6 18.5
1974 130 118 63 0.3 5.5 19.2
1975 127 116 52 0.2 5.6 17.7
1976 114 101 52 0.2 5.1 16.5
1977 124 113 55 0.2 5.7 18.2
1978 116 106 39 0.1 5.6 14.5
1979 119 109 45 0.2 5.7 17.1
1980 111 105 41 0.2 5.9 14.0
1981 114 105 40 0.2 5.8 13.0
1982 113 105 41 0.2 5.9 15.3
1983 100 93 38 0.2 5.4 16.0
1984 109 100 38 0.2 5.5 13.8
1985 113 103 45 0.2 5.9 15.8
1986 104 92 38 0.2 5.7 15.4
1987 99 90 42 0.2 5.6 16.2
1988 87 79 38 0.1 5.0 17.7
1989 100 92 44 0.1 5.5 19.8
1990 96 83 42 0.2 5.0 19.1
1991 88 78 40 0.2 4.8 18.3
1992 88 79 41 0.2 4.3 16.0
1993 83 77 36 0.1 4.1 16.5
1994 83 70 44 0.1 3.8 18.7
1995 77 65 38 0.2 3.3 15.3
1996 74 59 39 0.2 3.0 16.2
1997 72 57 39 0.1 2.7 15.5
1998 66 52 40 0.1 2.5 16.2
1999 65 53 36 0.2 2.5 14.8
2000 72 60 38 0.1 2.8 15.8
20012 85 77 39 0.2 3.8 15.5
20023 111 98 48 0.1 4.9 19.5
20033 -- -- 83 -- 5.2 20.1

50428

Table 4.18C Standard Errors of Numbers (in Thousands) of Persons Who Initiated Cigarette Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 130 117 59 0.2 7.9 9.7
1966 115 96 66 0.2 6.2 9.7
1967 138 120 67 0.2 7.7 9.3
1968 134 104 83 0.2 6.4 11.4
1969 128 104 69 0.2 6.4 8.7
1970 111 93 68 0.2 5.5 8.7
1971 112 88 67 0.2 5.1 8.1
1972 117 95 68 0.2 5.8 8.2
1973 107 91 58 0.1 5.5 7.0
1974 115 98 59 0.2 5.9 6.8
1975 108 88 63 0.2 5.8 7.1
1976 110 98 53 0.1 6.2 5.8
1977 98 86 48 0.1 5.5 5.5
1978 104 92 48 0.2 6.2 4.7
1979 105 89 52 0.2 5.8 5.6
1980 96 77 53 0.2 5.4 5.5
1981 97 81 51 0.2 5.4 5.5
1982 96 85 49 0.2 5.6 4.5
1983 95 83 47 0.3 5.4 4.7
1984 89 77 44 0.2 5.2 4.9
1985 93 79 47 0.2 5.4 5.1
1986 83 71 42 0.2 5.0 4.6
1987 83 70 46 0.1 5.0 5.1
1988 85 68 48 0.1 4.9 5.1
1989 87 72 45 0.2 5.2 4.7
1990 77 65 42 0.1 4.9 4.3
1991 79 63 45 0.1 4.6 4.8
1992 76 58 50 0.1 4.0 5.1
1993 71 54 45 0.1 3.6 4.6
1994 69 49 49 0.1 3.0 5.0
1995 62 49 41 0.1 3.0 4.5
1996 63 45 45 0.1 2.7 4.9
1997 64 45 44 0.1 2.7 4.6
1998 55 42 34 0.1 2.4 3.4
1999 56 41 36 0.1 2.6 3.7
2000 59 44 34 0.1 2.6 2.9
20012 64 50 38 0.2 2.8 3.3
20023 82 59 53 0.2 3.5 4.7
20033 -- -- 49 -- 3.4 4.5

50428

Table 4.19C Standard Errors of Numbers (in Thousands) of Persons Who Initiated Daily Cigarette Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 98 72 74 0.3 3.7 5.9
1966 98 72 71 0.3 3.5 5.4
1967 99 68 73 0.2 3.5 5.4
1968 105 56 89 0.3 2.8 6.2
1969 109 71 81 0.2 3.3 5.5
1970 101 63 77 0.3 3.0 4.7
1971 99 60 75 0.3 2.7 4.5
1972 89 58 71 0.2 2.7 4.1
1973 90 59 71 0.2 2.6 3.9
1974 94 63 66 0.2 2.9 3.6
1975 94 62 69 0.2 2.9 3.7
1976 82 60 56 0.2 2.9 2.7
1977 83 62 55 0.2 2.9 2.8
1978 82 57 57 0.3 2.7 2.6
1979 79 57 59 0.2 2.8 2.8
1980 81 57 58 0.3 2.8 2.3
1981 76 53 53 0.3 2.7 2.4
1982 77 52 57 0.3 2.7 2.6
1983 75 53 52 0.3 2.7 2.3
1984 69 51 45 0.2 2.7 2.1
1985 65 46 46 0.2 2.5 2.2
1986 62 44 46 0.4 2.4 1.9
1987 67 43 53 0.3 2.3 2.4
1988 64 40 50 0.3 2.2 2.1
1989 65 40 48 0.2 2.2 2.3
1990 61 40 47 0.3 2.3 2.2
1991 67 42 52 0.4 2.3 2.4
1992 61 38 48 0.2 2.1 2.3
1993 58 38 42 0.2 2.0 2.0
1994 58 32 50 0.3 1.7 2.2
1995 52 31 43 0.2 1.6 2.1
1996 61 29 54 0.3 1.4 2.3
1997 58 29 49 0.2 1.4 2.3
1998 48 27 38 0.2 1.3 1.9
1999 47 27 37 0.3 1.2 1.7
2000 48 25 39 0.2 1.1 1.6
2001 42 25 33 0.3 1.1 1.2
20022 47 28 39 0.4 1.2 1.4
20033 70 40 57 0.5 1.7 1.8

50428

Table 4.20C Standard Errors of Numbers (in Thousands) of Persons Who Initiated Smokeless Tobacco Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 58 47 36 0.7 2.3 1.7
1966 49 31 36 0.9 1.3 1.7
1967 62 42 43 0.7 1.9 1.7
1968 63 44 43 0.9 1.9 1.4
1969 57 45 32 0.5 1.9 1.4
1970 57 39 47 0.7 1.6 1.9
1971 51 34 38 0.6 1.3 1.3
1972 54 39 38 0.5 1.5 1.4
1973 63 43 47 0.9 1.7 1.5
1974 57 41 41 0.4 1.6 1.5
1975 58 42 40 0.6 1.6 1.3
1976 58 46 41 0.5 1.9 1.2
1977 71 53 47 0.4 2.2 1.4
1978 69 52 46 0.4 2.4 1.2
1979 73 57 45 0.5 2.6 1.1
1980 64 53 40 0.5 2.5 1.2
1981 64 48 43 0.4 2.3 1.4
1982 70 52 45 0.4 2.5 1.3
1983 64 50 39 0.4 2.6 1.3
1984 72 53 44 0.4 2.8 1.5
1985 61 46 37 0.4 2.4 1.3
1986 59 49 33 0.4 2.7 1.1
1987 56 39 40 0.5 2.2 1.3
1988 49 38 32 0.4 2.2 1.2
1989 50 36 36 0.4 2.2 1.4
1990 54 38 35 0.4 2.3 1.2
1991 52 34 41 0.7 2.0 1.3
1992 47 34 33 0.5 1.9 1.3
1993 44 31 31 0.4 1.6 1.3
1994 49 24 41 0.7 1.2 1.4
1995 40 25 32 0.5 1.2 1.2
1996 37 23 28 0.4 1.1 1.1
1997 41 23 34 0.6 1.1 1.2
1998 33 21 26 0.3 0.9 1.0
1999 32 22 23 0.3 0.9 0.9
2000 40 21 33 0.4 0.9 1.0
2001 32 19 27 0.4 0.8 1.0
20022 38 23 28 0.5 1.0 0.8
20033 54 34 43 0.8 1.4 1.2

50428

Table 4.21C Standard Errors of Numbers (in Thousands) of Persons Who Initiated Cigar Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 87 43 71 0.5 2.1 4.1
1966 82 55 63 0.3 2.7 3.8
1967 83 50 67 0.4 2.5 3.8
1968 87 54 69 0.3 2.5 3.6
1969 106 52 89 0.5 2.3 4.2
1970 83 43 71 0.4 1.9 3.4
1971 90 43 74 0.4 1.9 3.4
1972 87 45 75 0.3 1.9 3.3
1973 96 45 80 0.3 1.9 3.6
1974 73 37 63 0.4 1.6 2.5
1975 78 40 63 0.4 1.7 2.6
1976 80 42 66 0.5 1.8 2.4
1977 80 41 64 0.4 1.8 2.3
1978 75 39 66 0.4 1.7 2.4
1979 69 35 61 0.5 1.6 2.1
1980 72 35 62 0.4 1.6 2.1
1981 70 34 60 0.4 1.6 1.9
1982 74 37 66 0.5 1.7 2.1
1983 72 33 63 0.4 1.6 2.0
1984 66 31 58 0.3 1.5 2.0
1985 65 36 53 0.4 1.8 2.0
1986 60 31 52 0.4 1.6 1.7
1987 70 28 63 0.6 1.4 2.2
1988 79 32 72 0.4 1.7 2.1
1989 80 28 74 0.5 1.5 2.2
1990 67 29 61 0.3 1.6 2.2
1991 67 33 59 0.3 1.8 2.0
1992 78 31 70 0.3 1.7 2.5
1993 72 27 66 0.4 1.4 2.2
1994 82 30 75 0.3 1.5 2.7
1995 81 28 76 0.3 1.3 3.0
1996 88 27 83 0.3 1.3 3.2
1997 89 30 83 0.3 1.4 3.3
1998 85 33 80 0.3 1.5 2.6
1999 82 34 72 0.3 1.5 2.7
2000 79 31 72 0.3 1.4 2.5
2001 75 32 64 0.4 1.5 2.0
20022 80 37 73 0.3 1.7 2.2
20033 107 53 92 0.6 2.5 2.6

50428

Table 4.22C Standard Errors of Numbers (in Thousands) of Persons Who Initiated Illicit Drug Use in the United States, Their Mean Age at First Use, and Rates of First Use (Per 1,000 Person-Years of Exposure): 1965-2003, Based on 2002-2004 NSDUHs
YEAR NUMBER OF INITIATES (1,000s) MEAN AGE AGE-SPECIFIC RATES1
All Ages Under 18 18 or Older 12-17 18-25
1965 86 55 65 0.4 2.7 3.2
1966 87 51 69 0.4 2.4 3.2
1967 103 67 79 0.3 3.3 3.7
1968 131 80 99 0.2 3.8 4.7
1969 128 75 103 0.2 3.5 5.0
1970 134 80 104 0.2 3.8 4.8
1971 118 72 95 0.3 3.4 5.0
1972 126 76 99 0.3 3.5 4.7
1973 124 79 92 0.2 3.7 5.0
1974 116 80 81 0.3 3.9 4.2
1975 121 85 84 0.2 4.2 4.3
1976 123 86 83 0.3 4.4 4.3
1977 114 85 77 0.3 4.4 3.9
1978 116 88 77 0.3 4.8 4.0
1979 109 82 73 0.3 4.5 4.0
1980 101 73 69 0.3 4.1 3.7
1981 96 67 67 0.3 4.1 4.2
1982 94 73 63 0.4 4.2 3.6
1983 94 69 62 0.4 3.9 4.1
1984 88 68 57 0.4 3.8 3.6
1985 97 70 63 0.4 4.2 3.7
1986 86 63 59 0.3 3.7 3.8
1987 82 62 49 0.4 3.7 3.4
1988 83 64 50 0.4 3.9 3.4
1989 78 50 58 0.3 3.1 3.6
1990 66 50 47 0.4 3.1 2.8
1991 69 52 51 0.5 3.1 3.2
1992 81 54 59 0.4 3.2 3.4
1993 73 50 51 0.3 2.9 3.3
1994 76 46 58 0.4 2.6 3.5
1995 73 40 60 0.2 2.0 4.0
1996 68 40 55 0.3 2.1 3.4
1997 65 43 46 0.2 2.2 3.0
1998 69 40 53 0.3 2.0 2.8
1999 66 43 48 0.3 2.1 2.7
2000 71 43 50 0.3 2.2 2.8
2001 64 38 48 0.3 2.0 2.4
20022 71 50 50 0.3 2.6 2.4
20033 115 69 91 0.4 3.6 3.6

50616

Table 4.23D Past Year Initiation of Illicit Drug Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Illicit Drug Use, and Past Year Illicit Drug Users Aged 12 or Older, by Demographic Characteristics: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2003 and 2004
Demographic Characteristic NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2003 2004 2003 2004 2003 2004 2003 2004
TOTAL 100 99 0.04 0.04 0.08 0.08 0.29 0.28
AGE                
     12-17 54 53 0.20 0.20 0.27 0.26 0.80 0.86
          12-13 25 23 0.28 0.27 0.32 0.31 2.32 2.44
          14-15 33 33 0.39 0.36 0.50 0.47 1.47 1.50
          16-17 36 32 0.40 0.37 0.64 0.59 1.08 1.05
     18-25 40 42 0.12 0.13 0.29 0.29 0.35 0.38
          18-20 34 37 0.26 0.28 0.56 0.59 0.63 0.71
          21-25 22 21 0.11 0.10 0.29 0.26 0.36 0.34
     26 or Older 69 77 0.04 0.04 0.07 0.08 0.37 0.40
GENDER                
     Male 56 59 0.05 0.05 0.10 0.10 0.29 0.30
     Female 79 81 0.06 0.07 0.11 0.11 0.50 0.52
GENDER/AGE                
     Male 12-17 37 35 0.28 0.26 0.37 0.34 1.11 1.12
     Female 12-17 39 38 0.31 0.30 0.40 0.38 1.19 1.26

50616

Table 4.23P Past Year Initiation of Illicit Drug Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Illicit Drug Use, and Past Year Illicit Drug Users Aged 12 or Older, by Demographic Characteristics: P Values from Tests of Differences of Percentages, 2004 Versus 2003
Demographic Characteristic NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2003 2004 2003 2004 2003 2004 2003 2004
TOTAL N/A   0.3797   0.5239   0.1961  
AGE                
     12-17 N/A   0.2190   0.2017   0.6367  
          12-13 N/A   0.4221   0.4089   0.2290  
          14-15 N/A   0.7040   0.6849   0.8603  
          16-17 N/A   0.2799   0.2723   0.7308  
     18-25 N/A   0.2452   0.5106   0.1455  
          18-20 N/A   0.1103   0.2888   0.0510  
          21-25 N/A   0.8747   0.6982   0.9617  
     26 or Older N/A   0.1460   0.1585   0.1099  
GENDER                
     Male N/A   0.8018   0.9018   0.5938  
     Female N/A   0.3694   0.4951   0.2118  
GENDER/AGE                
     Male 12-17 N/A   0.4155   0.4086   0.9616  
     Female 12-17 N/A   0.3597   0.3213   0.5213  

50616

Table 4.24D Past Year Initiation of Marijuana Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Marijuana Use, and Past Year Marijuana Users Aged 12 or Older, by Demographic Characteristics: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2003 and 2004
Demographic Characteristic NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2003 2004 2003 2004 2003 2004 2003 2004
TOTAL 70 82 0.03 0.03 0.05 0.06 0.28 0.34
AGE                
     12-17 46 47 0.18 0.18 0.21 0.21 0.99 1.02
          12-13 13 16 0.16 0.19 0.16 0.19 4.07 3.91
          14-15 28 29 0.32 0.33 0.37 0.37 1.75 1.88
          16-17 36 33 0.42 0.39 0.58 0.54 1.30 1.26
     18-25 38 45 0.12 0.14 0.24 0.28 0.39 0.49
          18-20 33 43 0.26 0.32 0.48 0.58 0.72 0.94
          21-25 20 17 0.10 0.08 0.22 0.19 0.39 0.34
     26 or Older 30 47 0.02 0.03 0.03 0.04 0.23 0.37
GENDER                
     Male 52 45 0.04 0.04 0.08 0.07 0.34 0.31
     Female 48 64 0.04 0.05 0.06 0.08 0.47 0.65
GENDER/AGE                
     Male 12-17 31 32 0.24 0.24 0.28 0.28 1.31 1.39
     Female 12-17 34 33 0.27 0.26 0.32 0.30 1.49 1.56

50616

Table 4.24P Past Year Initiation of Marijuana Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Marijuana Use, and Past Year Marijuana Users Aged 12 or Older, by Demographic Characteristics: P Values from Tests of Differences of Percentages, 2004 Versus 2003
Demographic Characteristic NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2003 2004 2003 2004 2003 2004 2003 2004
TOTAL N/A   0.1703   0.2299   0.1409  
AGE                
     12-17 N/A   0.7276   0.8424   0.2145  
          12-13 N/A   0.2201   0.2212   0.6760  
          14-15 N/A   0.8440   0.9543   0.1751  
          16-17 N/A   0.7419   0.6300   0.9036  
     18-25 N/A   0.5103   0.7318   0.3290  
          18-20 N/A   0.1078   0.2304   0.0493  
          21-25 N/A   0.1582   0.1287   0.1926  
     26 or Older N/A   0.1200   0.1227   0.0898  
GENDER                
     Male N/A   0.7351   0.7020   0.8457  
     Female N/A   0.0355   0.0568   0.0305  
GENDER/AGE                
     Male 12-17 N/A   0.8155   0.8601   0.4772  
     Female 12-17 N/A   0.7936   0.9198   0.2961  

50616

Table 4.25D Past Year Initiation of Cigarette Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Cigarette Use, and Past Year Cigarette Users Aged 12 or Older, by Demographic Characteristics: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2003 and 2004
Demographic Characteristic NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2003 2004 2003 2004 2003 2004 2003 2004
TOTAL 71 72 0.03 0.03 0.10 0.09 0.11 0.11
AGE                
     12-17 48 53 0.19 0.20 0.25 0.26 0.85 0.96
          12-13 19 22 0.22 0.26 0.24 0.28 2.78 3.11
          14-15 28 30 0.34 0.33 0.45 0.43 1.54 1.55
          16-17 33 34 0.39 0.40 0.68 0.67 1.08 1.16
     18-25 45 48 0.14 0.14 0.43 0.40 0.29 0.30
          18-20 40 41 0.31 0.30 0.77 0.71 0.66 0.63
          21-25 20 24 0.10 0.12 0.37 0.40 0.21 0.25
     26 or Older 31 20 0.02 0.01 0.07 0.04 0.06 0.04
GENDER                
     Male 45 47 0.04 0.04 0.15 0.15 0.12 0.13
     Female 53 50 0.04 0.04 0.12 0.11 0.17 0.16
GENDER/AGE                
     Male 12-17 32 33 0.25 0.25 0.34 0.32 1.14 1.27
     Female 12-17 38 37 0.30 0.29 0.39 0.38 1.30 1.29

50616

Table 4.25P Past Year Initiation of Cigarette Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Cigarette Use, and Past Year Cigarette Users Aged 12 or Older, by Demographic Characteristics: P Values from Tests of Differences of Percentages, 2004 Versus 2003
Demographic Characteristic NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2003 2004 2003 2004 2003 2004 2003 2004
TOTAL N/A   0.2706   0.8123   0.1896  
AGE                
     12-17 N/A   0.4197   0.7499   0.1221  
          12-13 N/A   0.2701   0.3015   0.3376  
          14-15 N/A   0.4599   0.3345   0.6483  
          16-17 N/A   0.2207   0.6829   0.0554  
     18-25 N/A   0.1261   0.3410   0.1130  
          18-20 N/A   0.1057   0.3712   0.0877  
          21-25 N/A   0.6717   0.8134   0.6587  
     26 or Older N/A   0.3387   0.2930   0.3519  
GENDER                
     Male N/A   0.5214   0.8374   0.5611  
     Female N/A   0.3421   0.8589   0.1774  
GENDER/AGE                
     Male 12-17 N/A   0.7835   0.9038   0.2198  
     Female 12-17 N/A   0.4084   0.5930   0.3550  

50616

Table 4.26D Past Year Initiation of Alcohol Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Alcohol Use, and Past Year Alcohol Users Aged 12 or Older, by Demographic Characteristics: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2003 and 2004
Demographic Characteristic NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2003 2004 2003 2004 2003 2004 2003 2004
TOTAL 101 129 0.04 0.05 0.25 0.27 0.07 0.08
AGE                
     12-17 68 80 0.26 0.29 0.37 0.40 0.66 0.74
          12-13 28 32 0.33 0.37 0.38 0.41 1.90 2.22
          14-15 40 50 0.47 0.52 0.66 0.71 1.14 1.26
          16-17 45 47 0.52 0.51 1.00 0.99 0.88 0.85
     18-25 67 67 0.20 0.19 1.02 0.91 0.26 0.25
          18-20 56 54 0.42 0.39 1.37 1.23 0.58 0.53
          21-25 33 39 0.17 0.19 1.29 1.38 0.20 0.23
     26 or Older 21 74 0.01 0.04 0.09 0.31 0.02 0.06
GENDER                
     Male 67 71 0.06 0.06 0.42 0.41 0.09 0.09
     Female 70 104 0.06 0.08 0.29 0.36 0.10 0.14
GENDER/AGE                
     Male 12-17 45 50 0.34 0.36 0.48 0.51 0.95 0.98
     Female 12-17 48 55 0.37 0.40 0.53 0.56 0.91 1.01

50616

Table 4.26P Past Year Initiation of Alcohol Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Alcohol Use, and Past Year Alcohol Users Aged 12 or Older, by Demographic Characteristics: P Values from Tests of Differences of Percentages, 2004 Versus 2003
Demographic Characteristic NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2003 2004 2003 2004 2003 2004 2003 2004
TOTAL N/A   0.0962   0.6069   0.1056  
AGE                
     12-17 N/A   0.1878   0.4197   0.0609  
          12-13 N/A   0.5519   0.6942   0.0421  
          14-15 N/A   0.5017   0.6864   0.4113  
          16-17 N/A   0.4767   0.7446   0.3691  
     18-25 N/A   0.7089   0.5724   0.7010  
          18-20 N/A   0.5583   0.9685   0.5925  
          21-25 N/A   0.9888   0.4426   0.9555  
     26 or Older N/A   0.1581   0.1713   0.1587  
GENDER                
     Male N/A   0.1665   0.5795   0.1942  
     Female N/A   0.2964   0.8230   0.2916  
GENDER/AGE                
     Male 12-17 N/A   0.0622   0.1141   0.0740  
     Female 12-17 N/A   0.8989   0.7329   0.2826  

50616

Table 4.27D Past Year Initiation of Substance Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 12 or Older: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2003 and 2004
Substance NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2003 2004 2003 2004 2003 2004 2003 2004
ILLICIT DRUG3 100 99 0.04 0.04 0.08 0.08 0.29 0.28
     Marijuana and Hashish 70 82 0.03 0.03 0.05 0.06 0.28 0.34
     Cocaine 56 65 0.02 0.03 0.03 0.03 0.99 1.12
          Crack 36 29 0.02 0.01 0.02 0.01 2.62 2.30
     Heroin 20 28 0.01 0.01 0.01 0.01 * 5.51
     Hallucinogens 46 56 0.02 0.02 0.02 0.03 1.17 1.42
          LSD 20 25 0.01 0.01 0.01 0.01 3.26 3.70
          PCP 14 20 0.01 0.01 0.01 0.01 4.73 *
          Ecstasy 44 47 0.02 0.02 0.02 0.02 1.93 2.29
     Inhalants 44 42 0.02 0.02 0.02 0.02 1.77 1.75
     Nonmedical Use of
        Psychotherapeutics4
111 118 0.05 0.05 0.06 0.06 0.70 0.75
          Pain Relievers 109 99 0.05 0.04 0.05 0.05 0.89 0.82
               OxyContin® -- 54 -- 0.02 -- 0.02 -- 3.10
          Tranquilizers 65 74 0.03 0.03 0.03 0.03 1.28 1.40
          Stimulants 58 70 0.02 0.03 0.03 0.03 1.89 2.10
               Methamphetamine 35 35 0.01 0.01 0.02 0.02 2.54 2.51
          Sedatives 38 43 0.02 0.02 0.02 0.02 4.09 4.70
ILLICIT DRUG OTHER THAN MARIJUANA3 103 100 0.04 0.04 0.06 0.06 0.50 0.47
CIGARETTES 71 72 0.03 0.03 0.10 0.09 0.11 0.11
     Daily Cigarette Use5 58 56 0.02 0.02 0.04 0.04 -- --
SMOKELESS TOBACCO 49 52 0.02 0.02 0.03 0.03 0.50 0.56
CIGARS 98 114 0.04 0.05 0.06 0.07 0.40 0.43
ALCOHOL 101 129 0.04 0.05 0.25 0.27 0.07 0.08

50616

Table 4.27P Past Year Initiation of Substance Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 12 or Older: P Values from Tests of Differences of Percentages, 2004 Versus 2003
Substance NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2003 2004 2003 2004 2003 2004 2003 2004
ILLICIT DRUG3 N/A   0.3797   0.5239   0.1961  
     Marijuana and Hashish N/A   0.1703   0.2299   0.1409  
     Cocaine N/A   0.9939   0.9531   0.5070  
          Crack N/A   0.2171   0.2159   0.4512  
     Heroin N/A   0.4842   0.4894   *  
     Hallucinogens N/A   0.6020   0.6255   0.3862  
          LSD N/A   0.3099   0.3303   0.4128  
          PCP N/A   0.9874   0.9808   *  
          Ecstasy N/A   0.5112   0.5152   0.5379  
     Inhalants N/A   0.6963   0.6764   0.1140  
     Nonmedical Use of
        Psychotherapeutics4
N/A   0.1818   0.2001   0.0351  
          Pain Relievers N/A   0.6833   0.6974   0.6505  
               OxyContin® --   --   --   --  
          Tranquilizers N/A   0.3152   0.3321   0.2830  
          Stimulants N/A   0.4392   0.4645   0.6612  
               Methamphetamine N/A   0.2762   0.2846   0.5097  
          Sedatives N/A   0.4447   0.4426   0.1433  
ILLICIT DRUG OTHER THAN MARIJUANA3 N/A   0.4426   0.5414   0.0840  
CIGARETTES N/A   0.2706   0.8123   0.1896  
     Daily Cigarette Use5 N/A   0.7670   0.9475   --  
SMOKELESS TOBACCO N/A   0.4090   0.4932   0.0918  
CIGARS N/A   0.0603   0.1044   0.0851  
ALCOHOL N/A   0.0962   0.6069   0.1056  

50616

Table 4.28D Past Year Initiation of Substance Use among Persons Aged 12 to 17, Persons Aged 12 to 17 At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 12 to 17: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2003 and 2004
Substance NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2003 2004 2003 2004 2003 2004 2003 2004
ILLICIT DRUG3 54 53 0.20 0.20 0.27 0.26 0.80 0.86
     Marijuana and Hashish 46 47 0.18 0.18 0.21 0.21 0.99 1.02
     Cocaine 22 23 0.09 0.09 0.09 0.09 3.03 3.32
          Crack 11 9 0.04 0.03 0.04 0.03 * *
     Heroin 7 8 0.03 0.03 0.03 0.03 * *
     Hallucinogens 28 28 0.11 0.11 0.11 0.11 2.28 2.30
          LSD 13 13 0.05 0.05 0.05 0.05 5.38 5.16
          PCP 10 9 0.04 0.04 0.04 0.04 * *
          Ecstasy 19 21 0.08 0.08 0.08 0.08 3.37 3.46
     Inhalants 37 33 0.14 0.13 0.16 0.14 2.10 2.09
     Nonmedical Use of
        Psychotherapeutics4
41 43 0.16 0.17 0.17 0.18 1.31 1.49
          Pain Relievers 43 43 0.16 0.17 0.18 0.18 1.60 1.68
               OxyContin® -- 15 -- 0.06 -- 0.06 -- 4.27
          Tranquilizers 24 23 0.10 0.09 0.10 0.09 2.92 2.66
          Stimulants 22 22 0.09 0.09 0.09 0.09 2.68 3.06
               Methamphetamine 14 13 0.05 0.05 0.06 0.05 4.45 5.41
          Sedatives 11 10 0.04 0.04 0.04 0.04 5.07 5.63
ILLICIT DRUG OTHER THAN MARIJUANA3 50 49 0.19 0.19 0.23 0.22 1.09 1.22
CIGARETTES 48 53 0.19 0.20 0.25 0.26 0.85 0.96
     Daily Cigarette Use5 27 32 0.11 0.13 0.12 0.13 -- --
SMOKELESS TOBACCO 28 29 0.11 0.11 0.12 0.12 1.90 2.10
CIGARS 47 50 0.18 0.19 0.20 0.21 1.34 1.41
ALCOHOL 68 80 0.26 0.29 0.37 0.40 0.66 0.74

50616

Table 4.28P Past Year Initiation of Substance Use among Persons Aged 12 to 17, Persons Aged 12 to 17 At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 12 to 17: P Values from Tests of Differences of Percentages, 2004 Versus 2003
Substance NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2003 2004 2003 2004 2003 2004 2003 2004
ILLICIT DRUG3 N/A   0.2190   0.2017   0.6367  
     Marijuana and Hashish N/A   0.7276   0.8424   0.2145  
     Cocaine N/A   0.7372   0.7281   0.6116  
          Crack N/A   0.0158   0.0158   *  
     Heroin N/A   0.5990   0.5995   *  
     Hallucinogens N/A   0.6740   0.7132   0.1628  
          LSD N/A   0.8925   0.9078   0.8626  
          PCP N/A   0.2075   0.2067   *  
          Ecstasy N/A   0.8773   0.8994   0.1923  
     Inhalants N/A   0.9628   0.9932   0.5177  
     Nonmedical Use of
        Psychotherapeutics4
N/A   0.3016   0.3170   0.0307  
          Pain Relievers N/A   0.8599   0.8363   0.2932  
               OxyContin® --   --   --   --  
          Tranquilizers N/A   0.7106   0.6950   0.3272  
          Stimulants N/A   0.4289   0.4016   0.4126  
               Methamphetamine N/A   0.6078   0.6044   0.8611  
          Sedatives N/A   0.9872   0.9873   0.9220  
ILLICIT DRUG OTHER THAN MARIJUANA3 N/A   0.5028   0.5232   0.9269  
CIGARETTES N/A   0.4197   0.7499   0.1221  
     Daily Cigarette Use5 N/A   0.5196   0.4843   --  
SMOKELESS TOBACCO N/A   0.2620   0.2459   0.0414  
CIGARS N/A   0.2741   0.3268   0.3423  
ALCOHOL N/A   0.1878   0.4197   0.0609  

50616

Table 4.29D Past Year Initiation of Substance Use among Persons Aged 18 to 25, Persons Aged 18 to 25 At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 18 to 25: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2003 and 2004
Substance NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2003 2004 2003 2004 2003 2004 2003 2004
ILLICIT DRUG3 40 42 0.12 0.13 0.29 0.29 0.35 0.38
     Marijuana and Hashish 38 45 0.12 0.14 0.24 0.28 0.39 0.49
     Cocaine 37 42 0.12 0.13 0.13 0.15 1.43 1.57
          Crack 15 17 0.05 0.05 0.05 0.06 3.88 4.59
     Heroin 9 10 0.03 0.03 0.03 0.03 * *
     Hallucinogens 33 33 0.10 0.10 0.13 0.13 1.37 1.51
          LSD 14 16 0.05 0.05 0.05 0.06 3.42 4.10
          PCP 9 14 0.03 0.04 0.03 0.04 * *
          Ecstasy 28 25 0.09 0.08 0.10 0.09 2.06 2.15
     Inhalants 25 24 0.08 0.07 0.09 0.08 2.86 2.78
     Nonmedical Use of
        Psychotherapeutics4
48 47 0.15 0.14 0.20 0.20 0.91 0.87
          Pain Relievers 47 44 0.14 0.13 0.18 0.17 1.00 1.00
               OxyContin® -- 27 -- 0.08 -- 0.09 -- 3.33
          Tranquilizers 32 31 0.10 0.10 0.11 0.11 1.61 1.58
          Stimulants 22 30 0.07 0.09 0.08 0.10 1.81 2.00
               Methamphetamine 14 19 0.04 0.06 0.05 0.06 2.44 3.14
          Sedatives 8 11 0.03 0.03 0.03 0.04 4.50 5.44
ILLICIT DRUG OTHER THAN MARIJUANA3 43 46 0.13 0.14 0.21 0.22 0.62 0.67
CIGARETTES 45 48 0.14 0.14 0.43 0.40 0.29 0.30
     Daily Cigarette Use5 36 37 0.11 0.11 0.17 0.17 -- --
SMOKELESS TOBACCO 27 29 0.08 0.09 0.11 0.11 1.00 1.00
CIGARS 50 56 0.15 0.17 0.26 0.28 0.64 0.66
ALCOHOL 67 67 0.20 0.19 1.02 0.91 0.26 0.25

50616

Table 4.29P Past Year Initiation of Substance Use among Persons Aged 18 to 25, Persons Aged 18 to 25 At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 18 to 25: P Values from Tests of Differences of Percentages, 2004 Versus 2003
Substance NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2003 2004 2003 2004 2003 2004 2003 2004
ILLICIT DRUG3 N/A   0.2452   0.5106   0.1455  
     Marijuana and Hashish N/A   0.5103   0.7318   0.3290  
     Cocaine N/A   0.8941   0.8752   0.9016  
          Crack N/A   0.6936   0.7039   0.3224  
     Heroin N/A   0.7693   0.7692   *  
     Hallucinogens N/A   0.6613   0.5134   0.6085  
          LSD N/A   0.5624   0.6383   0.2307  
          PCP N/A   0.5892   0.6045   *  
          Ecstasy N/A   0.3028   0.2668   0.6142  
     Inhalants N/A   0.4473   0.4108   0.3138  
     Nonmedical Use of
        Psychotherapeutics4
N/A   0.6462   0.6788   0.5213  
          Pain Relievers N/A   0.0852   0.1188   0.0874  
               OxyContin® --   --   --   --  
          Tranquilizers N/A   0.3622   0.3635   0.4566  
          Stimulants N/A   0.0062   0.0071   0.0053  
               Methamphetamine N/A   0.0486   0.0494   0.0230  
          Sedatives N/A   0.4416   0.4390   0.4000  
ILLICIT DRUG OTHER THAN MARIJUANA3 N/A   0.4149   0.5804   0.1786  
CIGARETTES N/A   0.1261   0.3410   0.1130  
     Daily Cigarette Use5 N/A   0.0955   0.1492   --  
SMOKELESS TOBACCO N/A   0.0554   0.0718   0.0569  
CIGARS N/A   0.0763   0.1505   0.3352  
ALCOHOL N/A   0.7089   0.5724   0.7010  

50616

Table 4.30D Past Year Initiation of Substance Use among Persons Aged 26 or Older, Persons Aged 26 or Older At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 26 or Older: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2003 and 2004
Substance NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2003 2004 2003 2004 2003 2004 2003 2004
ILLICIT DRUG3 69 77 0.04 0.04 0.07 0.08 0.37 0.40
     Marijuana and Hashish 30 47 0.02 0.03 0.03 0.04 0.23 0.37
     Cocaine 36 40 0.02 0.02 0.02 0.03 1.05 1.25
          Crack 31 21 0.02 0.01 0.02 0.01 2.96 2.09
     Heroin 16 25 0.01 0.01 0.01 0.01 * *
     Hallucinogens 17 31 0.01 0.02 0.01 0.02 1.59 2.58
          LSD * 15 * 0.01 * 0.01 * *
          PCP * 10 * 0.01 * 0.01 * *
          Ecstasy 27 29 0.01 0.02 0.02 0.02 * *
     Inhalants 13 13 0.01 0.01 0.01 0.01 * *
     Nonmedical Use of
        Psychotherapeutics4
91 100 0.05 0.05 0.06 0.07 1.06 1.21
          Pain Relievers 92 79 0.05 0.04 0.06 0.05 1.46 1.33
               OxyContin® -- 45 -- 0.02 -- 0.02 -- *
          Tranquilizers 52 62 0.03 0.03 0.03 0.04 1.82 2.08
          Stimulants 48 58 0.03 0.03 0.03 0.03 4.03 4.24
               Methamphetamine 29 26 0.02 0.01 0.02 0.02 * 3.37
          Sedatives 35 39 0.02 0.02 0.02 0.02 * *
ILLICIT DRUG OTHER THAN MARIJUANA3 80 75 0.04 0.04 0.06 0.06 0.73 0.70
CIGARETTES 31 20 0.02 0.01 0.07 0.04 0.06 0.04
     Daily Cigarette Use5 39 30 0.02 0.02 0.04 0.03 -- --
SMOKELESS TOBACCO 25 35 0.01 0.02 0.02 0.02 0.36 0.57
CIGARS 74 80 0.04 0.04 0.07 0.07 0.46 0.50
ALCOHOL 21 74 0.01 0.04 0.09 0.31 0.02 0.06

50616

Table 4.30P Past Year Initiation of Substance Use among Persons Aged 26 or Older, Persons Aged 26 or Older At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 26 or Older: P Values from Tests of Differences of Percentages, 2004 Versus 2003
Substance NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2003 2004 2003 2004 2003 2004 2003 2004
ILLICIT DRUG3 N/A   0.1460   0.1585   0.1099  
     Marijuana and Hashish N/A   0.1200   0.1227   0.0898  
     Cocaine N/A   0.9508   0.9658   0.7759  
          Crack N/A   0.4013   0.4009   0.4671  
     Heroin N/A   0.6252   0.6279   *  
     Hallucinogens N/A   0.2535   0.2526   0.3235  
          LSD N/A   *   *   *  
          PCP N/A   *   *   *  
          Ecstasy N/A   0.8196   0.8241   *  
     Inhalants N/A   0.7844   0.7861   *  
     Nonmedical Use of
        Psychotherapeutics4
N/A   0.1550   0.1621   0.0526  
          Pain Relievers N/A   0.7483   0.7507   0.4186  
               OxyContin® --   --   --   --  
          Tranquilizers N/A   0.0535   0.0552   0.0664  
          Stimulants N/A   0.9306   0.9206   0.6386  
               Methamphetamine N/A   0.6361   0.6415   *  
          Sedatives N/A   0.5291   0.5278   *  
ILLICIT DRUG OTHER THAN MARIJUANA3 N/A   0.3298   0.3513   0.1832  
CIGARETTES N/A   0.3387   0.2930   0.3519  
     Daily Cigarette Use5 N/A   0.4840   0.4534   --  
SMOKELESS TOBACCO N/A   0.4694   0.4855   0.3213  
CIGARS N/A   0.4124   0.4514   0.3632  
ALCOHOL N/A   0.1581   0.1713   0.1587  

50608

Table 4.31C Past Year Initiation of Substance Use among Persons Aged 12 or Older, by Gender: Standard Errors of Numbers in Thousands, 2003 and 2004
Substance NUMBER OF PAST YEAR INITIATES (1,000s)1
Total Male Female
2003 2004 2003 2004 2003 2004
ILLICIT DRUG2 100 99 56 59 79 81
     Marijuana and Hashish 70 82 52 45 48 64
     Cocaine 56 65 39 54 38 34
          Crack 36 29 19 18 30 22
     Heroin 20 28 16 19 11 21
     Hallucinogens 46 56 38 41 28 34
          LSD 20 25 16 19 12 15
          PCP 14 20 12 14 8 13
          Ecstasy 44 47 35 38 25 24
     Inhalants 44 42 34 29 28 31
     Nonmedical Use of Psychotherapeutics3 111 118 59 82 95 93
          Pain Relievers 109 99 58 69 94 81
               OxyContin® -- 54 -- 43 -- 33
          Tranquilizers 65 74 37 48 54 53
          Stimulants 58 70 31 56 49 41
               Methamphetamine 35 35 26 21 24 28
          Sedatives 38 43 14 17 35 39
ILLICIT DRUG OTHER THAN MARIJUANA2 103 100 57 71 85 80
CIGARETTES 71 72 45 47 53 50
     Daily Cigarette Use4 58 56 34 40 47 40
SMOKELESS TOBACCO 49 52 43 45 24 30
CIGARS 98 114 71 84 71 75
ALCOHOL 101 129 67 71 70 104

50616

Table 4.32C Past Year Initiation of Substance Use among Persons Aged 12 or Older Who Initiated Use Prior to the Age of 18, by Gender: Standard Errors of Numbers in Thousands, 2003 and 2004
Substance NUMBER OF PAST YEAR INITIATES (1,000s)1
Total Male Female
2003 2004 2003 2004 2003 2004
ILLICIT DRUG2 57 55 39 37 42 39
     Marijuana and Hashish 48 49 32 33 36 34
     Cocaine 24 26 17 19 17 19
          Crack 12 13 8 9 9 9
     Heroin 7 9 6 7 5 6
     Hallucinogens 29 30 19 21 22 21
          LSD 14 15 10 11 10 9
          PCP 10 9 8 6 7 6
          Ecstasy 21 23 13 16 16 16
     Inhalants 38 35 28 25 25 25
     Nonmedical Use of Psychotherapeutics3 45 45 28 29 34 34
          Pain Relievers 47 46 30 28 34 34
               OxyContin® -- 16 -- 11 -- 12
          Tranquilizers 26 24 16 14 19 19
          Stimulants 22 23 14 15 17 18
               Methamphetamine 14 14 9 8 10 12
          Sedatives 11 11 8 7 8 9
ILLICIT DRUG OTHER THAN MARIJUANA2 52 51 35 34 37 37
CIGARETTES 52 56 34 37 40 38
     Daily Cigarette Use4 31 36 20 24 23 25
SMOKELESS TOBACCO 31 31 28 27 12 15
CIGARS 50 53 38 37 34 36
ALCOHOL 75 86 50 54 51 59

50616

Table 4.33C Past Year Initiation of Substance Use among Persons Aged 12 or Older Who Initiated Use Prior to the Age of 21, by Gender: Standard Errors of Numbers in Thousands, 2003 and 2004
Substance NUMBER OF PAST YEAR INITIATES (1,000s)1
Total Male Female
2003 2004 2003 2004 2003 2004
ILLICIT DRUG2 64 63 45 41 48 47
     Marijuana and Hashish 58 62 42 41 41 45
     Cocaine 36 42 27 32 22 25
          Crack 16 17 12 13 10 10
     Heroin 10 10 9 8 5 6
     Hallucinogens 41 42 32 31 26 25
          LSD 18 20 14 15 12 11
          PCP 13 15 11 12 7 7
          Ecstasy 31 30 22 21 21 20
     Inhalants 41 40 32 28 26 28
     Nonmedical Use of Psychotherapeutics3 57 59 37 37 42 44
          Pain Relievers 59 57 38 36 42 42
               OxyContin® -- 25 -- 18 -- 18
          Tranquilizers 32 31 21 20 24 24
          Stimulants 29 34 19 20 22 28
               Methamphetamine 18 19 13 12 11 16
          Sedatives 12 13 9 8 9 9
ILLICIT DRUG OTHER THAN MARIJUANA2 61 61 42 41 44 43
CIGARETTES 62 65 42 43 45 47
     Daily Cigarette Use4 40 45 27 31 28 30
SMOKELESS TOBACCO 39 37 36 33 16 19
CIGARS 67 73 51 53 40 46
ALCOHOL 93 103 63 63 62 73

50718

Table 4.34D Standard Errors of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older, by Gender: 2003 and 2004
Substance MEAN AGE
Total Male Female
2003 2004 2003 2004 2003 2004
ILLICIT DRUG1 1.09 0.66 0.95 0.75 1.74 1.13
     Marijuana and Hashish 0.57 0.63 1.13 0.26 0.40 1.06
     Cocaine 0.36 0.45 0.41 0.55 0.63 0.77
          Crack 1.40 1.35 2.42 1.24 1.41 2.19
     Heroin 1.36 2.53 1.79 3.27 1.94 3.66
     Hallucinogens 0.31 0.57 0.48 0.68 0.35 0.95
          LSD 0.32 0.71 0.41 0.80 0.43 1.31
          PCP 0.49 1.17 0.46 0.62 0.96 2.10
          Ecstasy 0.50 0.61 0.72 0.94 0.67 0.60
     Inhalants 0.26 0.29 0.43 0.23 0.23 0.54
     Nonmedical Use of Psychotherapeutics2 1.09 1.08 0.52 2.21 1.65 1.08
          Pain Relievers 1.26 0.74 0.52 1.17 1.96 1.17
               OxyContin® -- 1.66 -- 2.64 -- 1.66
          Tranquilizers 0.78 0.85 0.79 1.48 1.13 1.08
          Stimulants 1.10 3.27 1.03 7.00 1.56 1.36
               Methamphetamine 1.04 1.59 1.44 0.88 1.51 2.69
          Sedatives 4.55 3.38 1.27 1.76 5.58 4.30
ILLICIT DRUG OTHER THAN MARIJUANA1 1.11 0.62 0.46 0.80 1.83 1.13
CIGARETTES 0.26 0.19 0.26 0.18 0.44 0.31
     Daily Cigarette Use3 0.62 0.40 0.44 0.51 1.01 0.65
SMOKELESS TOBACCO 0.42 0.83 0.50 1.02 0.72 1.38
CIGARS 0.73 0.56 0.63 0.78 1.33 0.80
ALCOHOL 0.12 0.85 0.10 0.44 0.21 1.49

50607

Table 4.34P P Values from Tests of Differences of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older, by Gender: 2004 Versus 2003
Substance MEAN AGE
Total Male Female
2003 2004 2003 2004 2003 2004
ILLICIT DRUG1 0.7348   0.4942   0.9724  
     Marijuana and Hashish 0.5506   0.3133   0.1109  
     Cocaine 0.7161   0.9860   0.6338  
          Crack 0.6064   0.2204   0.6358  
     Heroin 0.2152   0.7528   0.1120  
     Hallucinogens 0.2340   0.8437   0.1401  
          LSD 0.1445   0.7109   0.0821  
          PCP 0.2225   0.7011   0.2085  
          Ecstasy 0.8054   0.7920   0.3137  
     Inhalants 0.9350   0.1373   0.1469  
     Nonmedical Use of Psychotherapeutics2 0.5740   0.0558   0.5212  
          Pain Relievers 0.6720   0.0253   0.1854  
               OxyContin® --   --   --  
          Tranquilizers 0.0425   0.2306   0.1079  
          Stimulants 0.5748   0.2683   0.3119  
               Methamphetamine 0.3752   0.6198   0.4615  
          Sedatives 0.7506   0.2480   0.5536  
ILLICIT DRUG OTHER THAN MARIJUANA1 0.9737   0.0201   0.5119  
CIGARETTES 0.6598   0.9374   0.6527  
     Daily Cigarette Use3 0.1889   0.1974   0.0333  
SMOKELESS TOBACCO 0.1420   0.3241   0.2326  
CIGARS 0.8376   0.5791   0.8127  
ALCOHOL 0.2112   0.5110   0.2532  

50718

Table 4.35D Standard Errors of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older Who Initiated Use Prior to the Age of 18, by Gender: 2003 and 2004
Substance MEAN AGE
Total Male Female
2003 2004 2003 2004 2003 2004
ILLICIT DRUG1 0.05 0.05 0.09 0.08 0.07 0.07
     Marijuana and Hashish 0.05 0.05 0.08 0.08 0.07 0.07
     Cocaine 0.10 0.09 0.11 0.13 0.15 0.11
          Crack 0.18 0.21 0.27 0.23 0.23 0.30
     Heroin 0.40 0.24 * 0.30 0.48 0.39
     Hallucinogens 0.08 0.09 0.11 0.13 0.12 0.12
          LSD 0.18 0.24 0.20 0.33 0.26 0.29
          PCP 0.20 0.35 0.29 0.56 0.22 0.37
          Ecstasy 0.11 0.11 0.16 0.15 0.15 0.14
     Inhalants 0.10 0.10 0.15 0.15 0.13 0.12
     Nonmedical Use of Psychotherapeutics2 0.06 0.06 0.09 0.08 0.09 0.09
          Pain Relievers 0.06 0.06 0.09 0.09 0.09 0.09
               OxyContin® -- 0.12 -- 0.17 -- 0.15
          Tranquilizers 0.09 0.09 0.13 0.15 0.12 0.13
          Stimulants 0.10 0.10 0.17 0.15 0.13 0.13
               Methamphetamine 0.17 0.16 0.29 0.23 0.20 0.21
          Sedatives 0.25 0.28 0.31 0.42 0.37 0.38
ILLICIT DRUG OTHER THAN MARIJUANA1 0.06 0.07 0.10 0.10 0.09 0.08
CIGARETTES 0.06 0.06 0.10 0.08 0.08 0.08
     Daily Cigarette Use3 0.09 0.09 0.12 0.11 0.12 0.12
SMOKELESS TOBACCO 0.08 0.08 0.09 0.10 0.20 0.19
CIGARS 0.06 0.05 0.07 0.08 0.08 0.08
ALCOHOL 0.04 0.04 0.07 0.06 0.05 0.05

50608

Table 4.35P P Values from Tests of Differences of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older Who Initiated Use Prior to the Age of 18, by Gender: 2004 Versus 2003
Substance MEAN AGE
Total Male Female
2003 2004 2003 2004 2003 2004
ILLICIT DRUG1 0.7506   0.8238   0.5014  
     Marijuana and Hashish 0.4352   0.8636   0.2280  
     Cocaine 0.3786   0.1539   0.0144  
          Crack 0.2690   0.2183   0.6589  
     Heroin 0.4507   *   0.4257  
     Hallucinogens 0.4734   0.1664   0.9771  
          LSD 0.7961   0.6085   0.4341  
          PCP 0.4128   0.1270   0.5540  
          Ecstasy 0.7206   0.1498   0.4625  
     Inhalants 0.2731   0.5925   0.2453  
     Nonmedical Use of Psychotherapeutics2 0.3950   0.8553   0.2683  
          Pain Relievers 0.3984   0.7184   0.2146  
               OxyContin® --   --   --  
          Tranquilizers 0.2274   0.1507   0.7282  
          Stimulants 0.7961   0.9178   0.6879  
               Methamphetamine 0.6493   0.9386   0.6735  
          Sedatives 0.1664   0.2241   0.5221  
ILLICIT DRUG OTHER THAN MARIJUANA1 0.6096   0.7035   0.7459  
CIGARETTES 0.6703   0.5604   0.9128  
     Daily Cigarette Use3 0.3251   0.0579   0.7411  
SMOKELESS TOBACCO 0.8188   0.4642   0.3864  
CIGARS 0.6864   0.3884   0.7254  
ALCOHOL 0.9727   0.3637   0.3934  

50718

Table 4.36D Standard Errors of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older Who Initiated Use Prior to the Age of 21, by Gender: 2003 and 2004
Substance MEAN AGE
Total Male Female
2003 2004 2003 2004 2003 2004
ILLICIT DRUG1 0.07 0.07 0.11 0.10 0.09 0.09
     Marijuana and Hashish 0.06 0.07 0.10 0.10 0.08 0.10
     Cocaine 0.10 0.10 0.12 0.14 0.17 0.15
          Crack 0.22 0.22 0.32 0.24 0.25 0.34
     Heroin 0.38 0.32 0.55 0.41 0.44 0.52
     Hallucinogens 0.10 0.11 0.13 0.15 0.14 0.17
          LSD 0.20 0.20 0.21 0.27 0.36 0.30
          PCP 0.28 0.49 0.36 0.68 0.41 0.38
          Ecstasy 0.12 0.13 0.15 0.17 0.17 0.18
     Inhalants 0.13 0.13 0.18 0.17 0.14 0.19
     Nonmedical Use of Psychotherapeutics2 0.08 0.08 0.11 0.11 0.11 0.10
          Pain Relievers 0.08 0.08 0.11 0.11 0.11 0.11
               OxyContin® -- 0.17 -- 0.20 -- 0.28
          Tranquilizers 0.12 0.12 0.16 0.17 0.15 0.16
          Stimulants 0.14 0.14 0.20 0.22 0.19 0.18
               Methamphetamine 0.21 0.23 0.30 0.38 0.28 0.27
          Sedatives 0.33 0.38 0.51 0.61 0.41 0.43
ILLICIT DRUG OTHER THAN MARIJUANA1 0.08 0.08 0.12 0.11 0.11 0.12
CIGARETTES 0.08 0.08 0.11 0.10 0.10 0.10
     Daily Cigarette Use3 0.10 0.11 0.14 0.12 0.13 0.16
SMOKELESS TOBACCO 0.10 0.11 0.11 0.12 0.21 0.23
CIGARS 0.06 0.06 0.08 0.08 0.10 0.10
ALCOHOL 0.06 0.05 0.08 0.08 0.08 0.08

50608

Table 4.36P P Values from Tests of Differences of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older Who Initiated Use Prior to the Age of 21, by Gender: 2004 Versus 2003
Substance MEAN AGE
Total Male Female
2003 2004 2003 2004 2003 2004
ILLICIT DRUG1 0.1707   0.8000   0.1074  
     Marijuana and Hashish 0.6597   0.6995   0.3258  
     Cocaine 0.4446   0.7134   0.2055  
          Crack 0.3497   0.7526   0.3025  
     Heroin 0.5690   0.8998   0.1961  
     Hallucinogens 0.1785   0.0643   0.7552  
          LSD 0.8404   0.3992   0.2430  
          PCP 0.8595   0.9787   0.6459  
          Ecstasy 0.2176   0.7909   0.0310  
     Inhalants 0.8123   0.4230   0.5829  
     Nonmedical Use of Psychotherapeutics2 0.4099   0.7706   0.4534  
          Pain Relievers 0.3047   0.9478   0.2023  
               OxyContin® --   --   --  
          Tranquilizers 0.2530   0.2343   0.5997  
          Stimulants 0.0668   0.5452   0.0597  
               Methamphetamine 0.9385   0.7640   0.3922  
          Sedatives 0.6780   0.9166   0.6737  
ILLICIT DRUG OTHER THAN MARIJUANA1 0.7964   0.8605   0.8506  
CIGARETTES 0.2853   0.1055   0.9659  
     Daily Cigarette Use3 0.1384   0.0392   0.9911  
SMOKELESS TOBACCO 0.0431   0.0157   0.8156  
CIGARS 0.7362   1.0000   0.6139  
ALCOHOL 0.4444   0.1850   0.9013  

50629

Table 4.37D Past Year Initiation of Illicit Drug Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Illicit Drug Use, and Past Year Illicit Drug Users Aged 12 or Older, by Demographic Characteristics: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2002 and 2003
Demographic Characteristic NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2002 2003 2002 2003 2002 2003 2002 2003
TOTAL 91 100 0.04 0.04 0.07 0.08 0.25 0.29
AGE                
     12-17 54 54 0.21 0.20 0.27 0.27 0.82 0.80
          12-13 22 25 0.26 0.28 0.29 0.32 2.22 2.32
          14-15 32 33 0.36 0.39 0.46 0.50 1.40 1.47
          16-17 34 36 0.41 0.40 0.64 0.64 1.06 1.08
     18-25 42 40 0.13 0.12 0.30 0.29 0.36 0.35
          18-20 35 34 0.27 0.26 0.55 0.56 0.67 0.63
          21-25 22 22 0.12 0.11 0.30 0.29 0.35 0.36
     26 or Older 53 69 0.03 0.04 0.05 0.07 0.28 0.37
GENDER                
     Male 52 56 0.05 0.05 0.10 0.10 0.27 0.29
     Female 71 79 0.06 0.06 0.10 0.11 0.45 0.50
GENDER/AGE                
     Male 12-17 37 37 0.28 0.28 0.38 0.37 1.15 1.11
     Female 12-17 37 39 0.30 0.31 0.39 0.40 1.17 1.19

50629

Table 4.37P Past Year Initiation of Illicit Drug Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Illicit Drug Use, and Past Year Illicit Drug Users Aged 12 or Older, by Demographic Characteristics: P Values from Tests of Differences of Percentages, 2003 Versus 2002
Demographic Characteristic NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2002 2003 2002 2003 2002 2003 2002 2003
TOTAL N/A   0.6887   0.7822   0.9112  
AGE                
     12-17 N/A   0.5158   0.4888   0.7449  
          12-13 N/A   0.9797   0.9921   0.9869  
          14-15 N/A   0.1866   0.1881   0.2386  
          16-17 N/A   0.7925   1.0000   0.5358  
     18-25 N/A   0.2455   0.3661   0.3979  
          18-20 N/A   0.6472   0.7715   0.6419  
          21-25 N/A   0.2072   0.2669   0.3492  
     26 or Older N/A   0.5385   0.5254   0.5064  
GENDER                
     Male N/A   0.1442   0.2120   0.2494  
     Female N/A   0.5700   0.5592   0.4699  
GENDER/AGE                
     Male 12-17 N/A   0.3142   0.2707   0.5372  
     Female 12-17 N/A   0.9594   0.9361   0.9048  

50629

Table 4.38D Past Year Initiation of Marijuana Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Marijuana Use, and Past Year Marijuana Users Aged 12 or Older, by Demographic Characteristics: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2002 and 2003
Demographic Characteristic NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2002 2003 2002 2003 2002 2003 2002 2003
TOTAL 70 70 0.03 0.03 0.05 0.05 0.28 0.28
AGE                
     12-17 52 46 0.20 0.18 0.24 0.21 1.04 0.99
          12-13 16 13 0.19 0.16 0.20 0.16 3.94 4.07
          14-15 31 28 0.35 0.32 0.40 0.37 1.73 1.75
          16-17 35 36 0.42 0.42 0.59 0.58 1.29 1.30
     18-25 39 38 0.12 0.12 0.25 0.24 0.39 0.39
          18-20 31 33 0.24 0.26 0.44 0.48 0.69 0.72
          21-25 22 20 0.12 0.10 0.26 0.22 0.42 0.39
     26 or Older 25 30 0.01 0.02 0.02 0.03 0.20 0.23
GENDER                
     Male 47 52 0.04 0.04 0.08 0.08 0.31 0.34
     Female 49 48 0.04 0.04 0.06 0.06 0.49 0.47
GENDER/AGE                
     Male 12-17 35 31 0.26 0.24 0.31 0.28 1.41 1.31
     Female 12-17 34 34 0.27 0.27 0.31 0.32 1.43 1.49

50629

Table 4.38P Past Year Initiation of Marijuana Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Marijuana Use, and Past Year Marijuana Users Aged 12 or Older, by Demographic Characteristics: P Values from Tests of Differences of Percentages, 2003 Versus 2002
Demographic Characteristic NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2002 2003 2002 2003 2002 2003 2002 2003
TOTAL N/A   0.0174   0.0287   0.0743  
AGE                
     12-17 N/A   0.0188   0.0146   0.0811  
          12-13 N/A   0.0432   0.0405   0.5966  
          14-15 N/A   0.0281   0.0272   0.0818  
          16-17 N/A   0.4908   0.3722   0.7278  
     18-25 N/A   0.1293   0.1546   0.3308  
          18-20 N/A   0.6194   0.6364   0.6868  
          21-25 N/A   0.0926   0.1029   0.2071  
     26 or Older N/A   0.9361   0.9499   0.7995  
GENDER                
     Male N/A   0.0448   0.0705   0.1233  
     Female N/A   0.1493   0.1661   0.2823  
GENDER/AGE                
     Male 12-17 N/A   0.0148   0.0121   0.0495  
     Female 12-17 N/A   0.2783   0.2521   0.5165  

50629

Table 4.39D Past Year Initiation of Cigarette Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Cigarette Use, and Past Year Cigarette Users Aged 12 or Older, by Demographic Characteristics: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2002 and 2003
Demographic Characteristic NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2002 2003 2002 2003 2002 2003 2002 2003
TOTAL 76 71 0.03 0.03 0.10 0.10 0.11 0.11
AGE                
     12-17 47 48 0.18 0.19 0.25 0.25 0.80 0.85
          12-13 19 19 0.23 0.22 0.26 0.24 2.68 2.78
          14-15 31 28 0.35 0.34 0.48 0.45 1.61 1.54
          16-17 29 33 0.33 0.39 0.62 0.68 0.89 1.08
     18-25 42 45 0.13 0.14 0.41 0.43 0.26 0.29
          18-20 36 40 0.28 0.31 0.75 0.77 0.58 0.66
          21-25 20 20 0.10 0.10 0.38 0.37 0.21 0.21
     26 or Older 36 31 0.02 0.02 0.08 0.07 0.07 0.06
GENDER                
     Male 50 45 0.04 0.04 0.17 0.15 0.13 0.12
     Female 54 53 0.04 0.04 0.12 0.12 0.16 0.17
GENDER/AGE                
     Male 12-17 30 32 0.23 0.25 0.32 0.34 1.06 1.14
     Female 12-17 35 38 0.28 0.30 0.38 0.39 1.19 1.30

50629

Table 4.39P Past Year Initiation of Cigarette Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Cigarette Use, and Past Year Cigarette Users Aged 12 or Older, by Demographic Characteristics: P Values from Tests of Differences of Percentages, 2003 Versus 2002
Demographic Characteristic NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2002 2003 2002 2003 2002 2003 2002 2003
TOTAL N/A   0.8277   0.9553   0.4049  
AGE                
     12-17 N/A   0.6739   0.8549   0.0352  
          12-13 N/A   0.1008   0.0706   0.5235  
          14-15 N/A   0.8391   0.8267   0.3164  
          16-17 N/A   0.1370   0.3878   0.0178  
     18-25 N/A   0.9644   0.7445   0.7336  
          18-20 N/A   0.5970   0.9690   0.3928  
          21-25 N/A   0.5150   0.4398   0.6108  
     26 or Older N/A   0.7662   0.7603   0.8160  
GENDER                
     Male N/A   0.8801   0.6986   0.8065  
     Female N/A   0.6615   0.7810   0.3486  
GENDER/AGE                
     Male 12-17 N/A   0.9296   0.6354   0.3355  
     Female 12-17 N/A   0.5221   0.8602   0.0541  

50629

Table 4.40D Past Year Initiation of Alcohol Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Alcohol Use, and Past Year Alcohol Users Aged 12 or Older, by Demographic Characteristics: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2002 and 2003
Demographic Characteristic NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2002 2003 2002 2003 2002 2003 2002 2003
TOTAL 102 101 0.04 0.04 0.25 0.25 0.07 0.07
AGE                
     12-17 73 68 0.26 0.26 0.38 0.37 0.64 0.66
          12-13 30 28 0.34 0.33 0.39 0.38 2.08 1.90
          14-15 42 40 0.46 0.47 0.67 0.66 1.09 1.14
          16-17 45 45 0.50 0.52 0.99 1.00 0.82 0.88
     18-25 54 67 0.16 0.20 0.85 1.02 0.21 0.26
          18-20 46 56 0.34 0.42 1.18 1.37 0.49 0.58
          21-25 33 33 0.17 0.17 1.30 1.29 0.21 0.20
     26 or Older 40 21 0.02 0.01 0.18 0.09 0.03 0.02
GENDER                
     Male 66 67 0.06 0.06 0.39 0.42 0.09 0.09
     Female 77 70 0.06 0.06 0.32 0.29 0.11 0.10
GENDER/AGE                
     Male 12-17 49 45 0.36 0.34 0.53 0.48 0.94 0.95
     Female 12-17 56 48 0.41 0.37 0.57 0.53 0.98 0.91

50629

Table 4.40P Past Year Initiation of Alcohol Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Alcohol Use, and Past Year Alcohol Users Aged 12 or Older, by Demographic Characteristics: P Values from Tests of Differences of Percentages, 2003 Versus 2002
Demographic Characteristic NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2002 2003 2002 2003 2002 2003 2002 2003
TOTAL N/A   0.5019   0.5830   0.2663  
AGE                
     12-17 N/A   0.8258   0.6722   0.9587  
          12-13 N/A   0.6194   0.6491   0.4588  
          14-15 N/A   0.2211   0.4701   0.1131  
          16-17 N/A   0.2742   0.1749   0.4507  
     18-25 N/A   0.0395   0.0212   0.0461  
          18-20 N/A   0.0743   0.1211   0.0776  
          21-25 N/A   0.1929   0.0923   0.2036  
     26 or Older N/A   0.1525   0.1507   0.1634  
GENDER                
     Male N/A   0.6016   0.6657   0.4222  
     Female N/A   0.6434   0.7073   0.4087  
GENDER/AGE                
     Male 12-17 N/A   0.8107   0.4983   0.6218  
     Female 12-17 N/A   0.9267   0.9402   0.6500  

50629

Table 4.41D Past Year Initiation of Substance Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 12 or Older: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2002 and 2003
Substance NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2002 2003 2002 2003 2002 2003 2002 2003
ILLICIT DRUG3 91 100 0.04 0.04 0.07 0.08 0.25 0.29
     Marijuana and Hashish 70 70 0.03 0.03 0.05 0.05 0.28 0.28
     Cocaine 61 56 0.03 0.02 0.03 0.03 1.05 0.99
          Crack 43 36 0.02 0.02 0.02 0.02 2.75 2.62
     Heroin 20 20 0.01 0.01 0.01 0.01 5.00 *
     Hallucinogens 54 46 0.02 0.02 0.03 0.02 1.05 1.17
          LSD 29 20 0.01 0.01 0.01 0.01 2.44 3.26
          PCP 15 14 0.01 0.01 0.01 0.01 5.10 4.73
          Ecstasy 69 44 0.03 0.02 0.03 0.02 1.76 1.93
     Inhalants 43 44 0.02 0.02 0.02 0.02 1.90 1.77
     Nonmedical Use of
        Psychotherapeutics4
108 111 0.05 0.05 0.06 0.06 0.68 0.70
          Pain Relievers 108 109 0.05 0.05 0.05 0.05 0.90 0.89
               OxyContin® -- -- -- -- -- -- -- --
          Tranquilizers 80 65 0.03 0.03 0.04 0.03 1.54 1.28
          Stimulants 49 58 0.02 0.02 0.02 0.03 1.52 1.89
               Methamphetamine 31 35 0.01 0.01 0.01 0.02 2.09 2.54
          Sedatives 33 38 0.01 0.02 0.01 0.02 3.30 4.09
ILLICIT DRUG OTHER THAN MARIJUANA3 98 103 0.04 0.04 0.06 0.06 0.47 0.50
CIGARETTES 76 71 0.03 0.03 0.10 0.10 0.11 0.11
     Daily Cigarette Use5 64 58 0.03 0.02 0.05 0.04 -- --
SMOKELESS TOBACCO 52 49 0.02 0.02 0.03 0.03 0.53 0.50
CIGARS 102 98 0.04 0.04 0.07 0.06 0.39 0.40
ALCOHOL 102 101 0.04 0.04 0.25 0.25 0.07 0.07

50629

Table 4.41P Past Year Initiation of Substance Use among Persons Aged 12 or Older, Persons Aged 12 or Older At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 12 or Older: P Values from Tests of Differences of Percentages, 2003 Versus 2002
Substance NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2002 2003 2002 2003 2002 2003 2002 2003
ILLICIT DRUG3 N/A   0.6887   0.7822   0.9112  
     Marijuana and Hashish N/A   0.0174   0.0287   0.0743  
     Cocaine N/A   0.4797   0.5066   0.6584  
          Crack N/A   0.1795   0.1757   0.4844  
     Heroin N/A   0.3504   0.3512   *  
     Hallucinogens N/A   0.0001   0.0001   0.3280  
          LSD N/A   0.0001   0.0001   0.6361  
          PCP N/A   0.3745   0.3699   0.8009  
          Ecstasy N/A   0.0000   0.0000   0.0022  
     Inhalants N/A   0.8427   0.8495   0.6644  
     Nonmedical Use of
        Psychotherapeutics4
N/A   0.9796   0.9228   0.8513  
          Pain Relievers N/A   0.4666   0.4136   0.9218  
               OxyContin® --   --   --   --  
          Tranquilizers N/A   0.2236   0.2404   0.1087  
          Stimulants N/A   0.3305   0.3218   0.5993  
               Methamphetamine N/A   0.4242   0.4221   0.9237  
          Sedatives N/A   0.7280   0.7209   0.7077  
ILLICIT DRUG OTHER THAN MARIJUANA3 N/A   0.6141   0.6253   0.8903  
CIGARETTES N/A   0.8277   0.9553   0.4049  
     Daily Cigarette Use5 N/A   0.6607   0.7591   --  
SMOKELESS TOBACCO N/A   0.6441   0.5818   0.9740  
CIGARS N/A   0.2764   0.2359   0.6430  
ALCOHOL N/A   0.5019   0.5830   0.2663  

50629

Table 4.42D Past Year Initiation of Substance Use among Persons Aged 12 to 17, Persons Aged 12 to 17 At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 12 to 17: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2002 and 2003
Substance NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2002 2003 2002 2003 2002 2003 2002 2003
ILLICIT DRUG3 54 54 0.21 0.20 0.27 0.27 0.82 0.80
     Marijuana and Hashish 52 46 0.20 0.18 0.24 0.21 1.04 0.99
     Cocaine 24 22 0.10 0.09 0.10 0.09 3.01 3.03
          Crack 13 11 0.05 0.04 0.05 0.04 * *
     Heroin 10 7 0.04 0.03 0.04 0.03 * *
     Hallucinogens 27 28 0.11 0.11 0.11 0.11 2.11 2.28
          LSD 18 13 0.07 0.05 0.07 0.05 4.13 5.38
          PCP 11 10 0.04 0.04 0.04 0.04 4.99 *
          Ecstasy 25 19 0.10 0.08 0.10 0.08 3.02 3.37
     Inhalants 34 37 0.14 0.14 0.15 0.16 2.09 2.10
     Nonmedical Use of
        Psychotherapeutics4
43 41 0.17 0.16 0.19 0.17 1.41 1.31
          Pain Relievers 44 43 0.17 0.16 0.18 0.18 1.59 1.60
               OxyContin® -- -- -- -- -- -- -- --
          Tranquilizers 25 24 0.10 0.10 0.10 0.10 2.82 2.92
          Stimulants 25 22 0.10 0.09 0.10 0.09 2.73 2.68
               Methamphetamine 16 14 0.06 0.05 0.06 0.06 5.11 4.45
          Sedatives 11 11 0.04 0.04 0.04 0.04 5.53 5.07
ILLICIT DRUG OTHER THAN MARIJUANA3 44 50 0.18 0.19 0.21 0.23 1.07 1.09
CIGARETTES 47 48 0.18 0.19 0.25 0.25 0.80 0.85
     Daily Cigarette Use5 27 27 0.11 0.11 0.12 0.12 -- --
SMOKELESS TOBACCO 27 28 0.11 0.11 0.12 0.12 1.89 1.90
CIGARS 42 47 0.16 0.18 0.18 0.20 1.22 1.34
ALCOHOL 73 68 0.26 0.26 0.38 0.37 0.64 0.66

50629

Table 4.42P Past Year Initiation of Substance Use among Persons Aged 12 to 17, Persons Aged 12 to 17 At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 12 to 17: P Values from Tests of Differences of Percentages, 2003 Versus 2002
Substance NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2002 2003 2002 2003 2002 2003 2002 2003
ILLICIT DRUG3 N/A   0.5158   0.4888   0.7449  
     Marijuana and Hashish N/A   0.0188   0.0146   0.0811  
     Cocaine N/A   0.3323   0.3328   0.3954  
          Crack N/A   0.5131   0.5134   *  
     Heroin N/A   0.2305   0.2305   *  
     Hallucinogens N/A   0.1175   0.1044   0.2420  
          LSD N/A   0.0001   0.0001   0.2677  
          PCP N/A   0.2102   0.2094   *  
          Ecstasy N/A   0.0000   0.0000   0.5815  
     Inhalants N/A   0.9539   0.9389   0.6685  
     Nonmedical Use of
        Psychotherapeutics4
N/A   0.1683   0.1698   0.1110  
          Pain Relievers N/A   0.6283   0.6399   0.3354  
               OxyContin® --   --   --   --  
          Tranquilizers N/A   0.9516   0.9426   0.8250  
          Stimulants N/A   0.1247   0.1222   0.7873  
               Methamphetamine N/A   0.2251   0.2236   0.5937  
          Sedatives N/A   0.8663   0.8655   0.5169  
ILLICIT DRUG OTHER THAN MARIJUANA3 N/A   0.7951   0.7940   0.9316  
CIGARETTES N/A   0.6739   0.8549   0.0352  
     Daily Cigarette Use5 N/A   0.3911   0.4568   --  
SMOKELESS TOBACCO N/A   0.5409   0.5835   0.1473  
CIGARS N/A   0.5346   0.7299   0.1689  
ALCOHOL N/A   0.8258   0.6722   0.9587  

50629

Table 4.43D Past Year Initiation of Substance Use among Persons Aged 18 to 25, Persons Aged 18 to 25 At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 18 to 25: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2002 and 2003
Substance NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2002 2003 2002 2003 2002 2003 2002 2003
ILLICIT DRUG3 42 40 0.13 0.12 0.30 0.29 0.36 0.35
     Marijuana and Hashish 39 38 0.12 0.12 0.25 0.24 0.39 0.39
     Cocaine 45 37 0.14 0.12 0.16 0.13 1.62 1.43
          Crack 15 15 0.05 0.05 0.05 0.05 4.10 3.88
     Heroin 13 9 0.04 0.03 0.04 0.03 * *
     Hallucinogens 36 33 0.11 0.10 0.14 0.13 1.17 1.37
          LSD 18 14 0.06 0.05 0.07 0.05 2.84 3.42
          PCP 11 9 0.03 0.03 0.03 0.03 * *
          Ecstasy 39 28 0.12 0.09 0.14 0.10 1.69 2.06
     Inhalants 24 25 0.08 0.08 0.09 0.09 2.55 2.86
     Nonmedical Use of
        Psychotherapeutics4
45 48 0.14 0.15 0.18 0.20 0.84 0.91
          Pain Relievers 47 47 0.14 0.14 0.18 0.18 1.07 1.00
               OxyContin® -- -- -- -- -- -- -- --
          Tranquilizers 33 32 0.10 0.10 0.12 0.11 1.83 1.61
          Stimulants 31 22 0.10 0.07 0.11 0.08 1.99 1.81
               Methamphetamine 20 14 0.06 0.04 0.07 0.05 3.02 2.44
          Sedatives 10 8 0.03 0.03 0.03 0.03 4.87 4.50
ILLICIT DRUG OTHER THAN MARIJUANA3 45 43 0.14 0.13 0.22 0.21 0.66 0.62
CIGARETTES 42 45 0.13 0.14 0.41 0.43 0.26 0.29
     Daily Cigarette Use5 31 36 0.10 0.11 0.16 0.17 -- --
SMOKELESS TOBACCO 32 27 0.10 0.08 0.13 0.11 1.15 1.00
CIGARS 47 50 0.15 0.15 0.25 0.26 0.63 0.64
ALCOHOL 54 67 0.16 0.20 0.85 1.02 0.21 0.26

50629

Table 4.43P Past Year Initiation of Substance Use among Persons Aged 18 to 25, Persons Aged 18 to 25 At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 18 to 25: P Values from Tests of Differences of Percentages, 2003 Versus 2002
Substance NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2002 2003 2002 2003 2002 2003 2002 2003
ILLICIT DRUG3 N/A   0.2455   0.3661   0.3979  
     Marijuana and Hashish N/A   0.1293   0.1546   0.3308  
     Cocaine N/A   0.5859   0.5618   0.6464  
          Crack N/A   0.7611   0.7639   0.7081  
     Heroin N/A   0.0977   0.0985   *  
     Hallucinogens N/A   0.0004   0.0003   0.2614  
          LSD N/A   0.0455   0.0359   0.4862  
          PCP N/A   0.6905   0.6974   *  
          Ecstasy N/A   0.0000   0.0000   0.0550  
     Inhalants N/A   0.8763   0.8257   0.7167  
     Nonmedical Use of
        Psychotherapeutics4
N/A   0.9478   0.7404   0.6923  
          Pain Relievers N/A   0.6937   0.5096   0.6085  
               OxyContin® --   --   --   --  
          Tranquilizers N/A   0.4450   0.3824   0.9147  
          Stimulants N/A   0.0040   0.0045   0.0024  
               Methamphetamine N/A   0.0760   0.0739   0.0626  
          Sedatives N/A   0.3053   0.3006   0.3247  
ILLICIT DRUG OTHER THAN MARIJUANA3 N/A   0.1044   0.1299   0.1741  
CIGARETTES N/A   0.9644   0.7445   0.7336  
     Daily Cigarette Use5 N/A   0.7018   0.8402   --  
SMOKELESS TOBACCO N/A   0.2085   0.1492   0.2567  
CIGARS N/A   1.0000   0.9086   0.9795  
ALCOHOL N/A   0.0395   0.0212   0.0461  

50629

Table 4.44D Past Year Initiation of Substance Use among Persons Aged 26 or Older, Persons Aged 26 or Older At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 26 or Older: Standard Errors of Numbers in Thousands and Standard Errors of Percentages, 2002 and 2003
Substance NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2002 2003 2002 2003 2002 2003 2002 2003
ILLICIT DRUG3 53 69 0.03 0.04 0.05 0.07 0.28 0.37
     Marijuana and Hashish 25 30 0.01 0.02 0.02 0.03 0.20 0.23
     Cocaine 33 36 0.02 0.02 0.02 0.02 1.00 1.05
          Crack 38 31 0.02 0.02 0.02 0.02 3.06 2.96
     Heroin 11 16 0.01 0.01 0.01 0.01 * *
     Hallucinogens 28 17 0.02 0.01 0.02 0.01 2.23 1.59
          LSD 13 * 0.01 * 0.01 * * *
          PCP * * * * * * * *
          Ecstasy 50 27 0.03 0.01 0.03 0.02 4.89 *
     Inhalants 8 13 0.00 0.01 0.00 0.01 * *
     Nonmedical Use of
        Psychotherapeutics4
84 91 0.05 0.05 0.06 0.06 0.97 1.06
          Pain Relievers 82 92 0.05 0.05 0.05 0.06 1.35 1.46
               OxyContin® -- -- -- -- -- -- -- --
          Tranquilizers 67 52 0.04 0.03 0.04 0.03 2.21 1.82
          Stimulants 27 48 0.01 0.03 0.02 0.03 1.89 4.03
               Methamphetamine 16 29 0.01 0.02 0.01 0.02 1.98 *
          Sedatives 30 35 0.02 0.02 0.02 0.02 * *
ILLICIT DRUG OTHER THAN MARIJUANA3 70 80 0.04 0.04 0.05 0.06 0.62 0.73
CIGARETTES 36 31 0.02 0.02 0.08 0.07 0.07 0.06
     Daily Cigarette Use5 48 39 0.03 0.02 0.05 0.04 -- --
SMOKELESS TOBACCO 27 25 0.01 0.01 0.02 0.02 0.38 0.36
CIGARS 82 74 0.05 0.04 0.07 0.07 0.48 0.46
ALCOHOL 40 21 0.02 0.01 0.18 0.09 0.03 0.02

50629

Table 4.44P Past Year Initiation of Substance Use among Persons Aged 26 or Older, Persons Aged 26 or Older At Risk for Initiation of Substance Use, and Past Year Substance Users Aged 26 or Older: P Values from Tests of Differences of Percentages, 2003 Versus 2002
Substance NUMBER OF PAST YEAR INITIATES (1,000s)1 PERCENTAGE OF PAST YEAR INITIATES AMONG TOTAL POPULATION1 PERCENTAGE OF PAST YEAR INITIATES AMONG PERSONS AT RISK FOR INITIATION1,2 PERCENTAGE OF PAST YEAR INITIATES AMONG PAST YEAR USERS1
2002 2003 2002 2003 2002 2003 2002 2003
ILLICIT DRUG3 N/A   0.5385   0.5254   0.5064  
     Marijuana and Hashish N/A   0.9361   0.9499   0.7995  
     Cocaine N/A   0.9915   1.0000   0.9019  
          Crack N/A   0.1692   0.1673   0.2804  
     Heroin N/A   0.5065   0.5065   *  
     Hallucinogens N/A   0.1375   0.1385   0.1984  
          LSD N/A   *   *   *  
          PCP N/A   *   *   *  
          Ecstasy N/A   0.0053   0.0055   *  
     Inhalants N/A   0.3879   0.3877   *  
     Nonmedical Use of
        Psychotherapeutics4
N/A   0.5403   0.5309   0.5350  
          Pain Relievers N/A   0.3867   0.3759   0.5272  
               OxyContin® --   --   --   --  
          Tranquilizers N/A   0.0586   0.0602   0.0458  
          Stimulants N/A   0.1672   0.1693   0.0350  
               Methamphetamine N/A   0.4618   0.4621   *  
          Sedatives N/A   0.8731   0.8690   *  
ILLICIT DRUG OTHER THAN MARIJUANA3 N/A   0.7442   0.7446   0.6107  
CIGARETTES N/A   0.7662   0.7603   0.8160  
     Daily Cigarette Use5 N/A   0.7882   0.7706   --  
SMOKELESS TOBACCO N/A   0.8223   0.8128   0.8986  
CIGARS N/A   0.0616   0.0587   0.1058  
ALCOHOL N/A   0.1525   0.1507   0.1634  

50629

Table 4.45C Past Year Initiation of Substance Use among Persons Aged 12 or Older, by Gender: Standard Errors of Numbers in Thousands, 2002 and 2003
Substance NUMBER OF PAST YEAR INITIATES (1,000s)1
Total Male Female
2002 2003 2002 2003 2002 2003
ILLICIT DRUG2 91 100 52 56 71 79
     Marijuana and Hashish 70 70 47 52 49 48
     Cocaine 61 56 41 39 45 38
          Crack 43 36 39 19 33 30
     Heroin 20 20 17 16 10 11
     Hallucinogens 54 46 36 38 37 28
          LSD 29 20 19 16 23 12
          PCP 15 14 10 12 11 8
          Ecstasy 69 44 51 35 42 25
     Inhalants 43 44 32 34 27 28
     Nonmedical Use of Psychotherapeutics3 108 111 67 59 81 95
          Pain Relievers 108 109 64 58 82 94
               OxyContin® -- -- -- -- -- --
          Tranquilizers 80 65 47 37 66 54
          Stimulants 49 58 36 31 31 49
               Methamphetamine 31 35 22 26 20 24
          Sedatives 33 38 12 14 31 35
ILLICIT DRUG OTHER THAN MARIJUANA2 98 103 56 57 77 85
CIGARETTES 76 71 50 45 54 53
     Daily Cigarette Use4 64 58 48 34 42 47
SMOKELESS TOBACCO 52 49 43 43 28 24
CIGARS 102 98 71 71 74 71
ALCOHOL 102 101 66 67 77 70

50629

Table 4.46C Past Year Initiation of Substance Use among Persons Aged 12 or Older Who Initiated Use Prior to the Age of 18, by Gender: Standard Errors of Numbers in Thousands, 2002 and 2003
Substance NUMBER OF PAST YEAR INITIATES (1,000s)1
Total Male Female
2002 2003 2002 2003 2002 2003
ILLICIT DRUG2 57 57 38 39 40 42
     Marijuana and Hashish 55 48 36 32 37 36
     Cocaine 28 24 19 17 22 17
          Crack 14 12 8 8 11 9
     Heroin 10 7 5 6 9 5
     Hallucinogens 33 29 20 19 25 22
          LSD 21 14 14 10 16 10
          PCP 13 10 9 8 9 7
          Ecstasy 30 21 19 13 22 16
     Inhalants 35 38 27 28 22 25
     Nonmedical Use of Psychotherapeutics3 46 45 31 28 31 34
          Pain Relievers 46 47 31 30 31 34
               OxyContin® -- -- -- -- -- --
          Tranquilizers 26 26 17 16 19 19
          Stimulants 28 22 21 14 18 17
               Methamphetamine 16 14 11 9 12 10
          Sedatives 11 11 6 8 8 8
ILLICIT DRUG OTHER THAN MARIJUANA2 47 52 34 35 34 37
CIGARETTES 51 52 33 34 38 40
     Daily Cigarette Use4 29 31 23 20 18 23
SMOKELESS TOBACCO 28 31 24 28 15 12
CIGARS 46 50 35 38 29 34
ALCOHOL 79 75 53 50 59 51

50629

Table 4.47C Past Year Initiation of Substance Use among Persons Aged 12 or Older Who Initiated Use Prior to the Age of 21, by Gender: Standard Errors of Numbers in Thousands, 2002 and 2003
Substance NUMBER OF PAST YEAR INITIATES (1,000s)1
Total Male Female
2002 2003 2002 2003 2002 2003
ILLICIT DRUG2 67 64 44 45 47 48
     Marijuana and Hashish 64 58 42 42 44 41
     Cocaine 45 36 28 27 36 22
          Crack 17 16 10 12 14 10
     Heroin 14 10 11 9 10 5
     Hallucinogens 41 41 26 32 31 26
          LSD 25 18 18 14 18 12
          PCP 14 13 10 11 11 7
          Ecstasy 40 31 26 22 29 21
     Inhalants 40 41 30 32 25 26
     Nonmedical Use of Psychotherapeutics3 59 57 41 37 40 42
          Pain Relievers 59 59 40 38 40 42
               OxyContin® -- -- -- -- -- --
          Tranquilizers 35 32 25 21 24 24
          Stimulants 36 29 26 19 22 22
               Methamphetamine 21 18 14 13 15 11
          Sedatives 13 12 8 9 9 9
ILLICIT DRUG OTHER THAN MARIJUANA2 57 61 40 42 42 44
CIGARETTES 63 62 41 42 44 45
     Daily Cigarette Use4 38 40 30 27 24 28
SMOKELESS TOBACCO 41 39 37 36 19 16
CIGARS 61 67 47 51 38 40
ALCOHOL 90 93 61 63 64 62

50718

Table 4.48D Standard Errors of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older, by Gender: 2002 and 2003
Substance MEAN AGE
Total Male Female
2002 2003 2002 2003 2002 2003
ILLICIT DRUG1 0.43 1.09 0.32 0.95 0.73 1.74
     Marijuana and Hashish 0.19 0.57 0.28 1.13 0.27 0.40
     Cocaine 0.33 0.36 0.45 0.41 0.47 0.63
          Crack 2.21 1.40 1.60 2.42 4.86 1.41
     Heroin 2.51 1.36 3.51 1.79 0.58 1.94
     Hallucinogens 0.43 0.31 0.68 0.48 0.54 0.35
          LSD 0.49 0.32 0.26 0.41 0.94 0.43
          PCP 0.27 0.49 0.34 0.46 0.40 0.96
          Ecstasy 0.74 0.50 1.02 0.72 1.06 0.67
     Inhalants 0.17 0.26 0.26 0.43 0.22 0.23
     Nonmedical Use of Psychotherapeutics2 0.52 1.09 0.70 0.52 0.75 1.65
          Pain Relievers 0.53 1.26 0.73 0.52 0.77 1.96
               OxyContin® -- -- -- -- -- --
          Tranquilizers 1.29 0.78 1.26 0.79 1.92 1.13
          Stimulants 0.51 1.10 0.74 1.03 0.70 1.56
               Methamphetamine 0.66 1.04 0.73 1.44 1.04 1.51
          Sedatives 2.74 4.55 1.75 1.27 3.38 5.58
ILLICIT DRUG OTHER THAN MARIJUANA1 0.47 1.11 0.40 0.46 0.77 1.83
CIGARETTES 0.30 0.26 0.45 0.26 0.39 0.44
     Daily Cigarette Use3 0.72 0.62 1.04 0.44 0.94 1.01
SMOKELESS TOBACCO 0.64 0.42 0.69 0.50 1.41 0.72
CIGARS 0.53 0.73 0.72 0.63 0.76 1.33
ALCOHOL 0.23 0.12 0.21 0.10 0.37 0.21

50629

Table 4.48P P Values from Tests of Differences of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older, by Gender: 2003 Versus 2002
Substance MEAN AGE
Total Male Female
2002 2003 2002 2003 2002 2003
ILLICIT DRUG1 0.1912   0.6261   0.2407  
     Marijuana and Hashish 0.3716   0.3824   0.8205  
     Cocaine 0.8868   0.8331   0.9903  
          Crack 0.1067   0.1675   0.3980  
     Heroin 0.9649   0.7234   0.2350  
     Hallucinogens 0.1251   0.5015   0.0562  
          LSD 0.8099   0.0542   0.1158  
          PCP 0.0166   0.0097   0.2409  
          Ecstasy 0.0358   0.0576   0.2445  
     Inhalants 0.6384   0.6401   0.7342  
     Nonmedical Use of Psychotherapeutics2 0.0488   0.4292   0.0223  
          Pain Relievers 0.0305   0.5227   0.0121  
               OxyContin® --   --   --  
          Tranquilizers 0.1308   0.1840   0.2588  
          Stimulants 0.0194   0.6753   0.0149  
               Methamphetamine 0.2434   0.6308   0.2441  
          Sedatives 0.6133   0.1740   0.3222  
ILLICIT DRUG OTHER THAN MARIJUANA1 0.1629   0.6439   0.1210  
CIGARETTES 0.8529   0.6746   0.9312  
     Daily Cigarette Use3 0.9005   0.1039   0.3253  
SMOKELESS TOBACCO 0.2988   0.4178   0.5683  
CIGARS 0.2832   0.1739   0.7541  
ALCOHOL 0.3385   0.8882   0.2667  

50718

Table 4.49D Standard Errors of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older Who Initiated Use Prior to the Age of 18, by Gender: 2002 and 2003
Substance MEAN AGE
Total Male Female
2002 2003 2002 2003 2002 2003
ILLICIT DRUG1 0.05 0.05 0.08 0.09 0.08 0.07
     Marijuana and Hashish 0.05 0.05 0.08 0.08 0.07 0.07
     Cocaine 0.10 0.10 0.11 0.11 0.17 0.15
          Crack 0.22 0.18 0.17 0.27 0.33 0.23
     Heroin 0.24 0.40 0.32 * 0.36 0.48
     Hallucinogens 0.08 0.08 0.11 0.11 0.12 0.12
          LSD 0.12 0.18 0.14 0.20 0.19 0.26
          PCP 0.21 0.20 0.35 0.29 0.27 0.22
          Ecstasy 0.08 0.11 0.12 0.16 0.10 0.15
     Inhalants 0.09 0.10 0.13 0.15 0.12 0.13
     Nonmedical Use of Psychotherapeutics2 0.06 0.06 0.08 0.09 0.08 0.09
          Pain Relievers 0.06 0.06 0.08 0.09 0.09 0.09
               OxyContin® -- -- -- -- -- --
          Tranquilizers 0.09 0.09 0.14 0.13 0.11 0.12
          Stimulants 0.10 0.10 0.16 0.17 0.12 0.13
               Methamphetamine 0.16 0.17 0.25 0.29 0.20 0.20
          Sedatives 0.18 0.25 0.20 0.31 0.24 0.37
ILLICIT DRUG OTHER THAN MARIJUANA1 0.06 0.06 0.09 0.10 0.08 0.09
CIGARETTES 0.06 0.06 0.09 0.10 0.08 0.08
     Daily Cigarette Use3 0.10 0.09 0.12 0.12 0.13 0.12
SMOKELESS TOBACCO 0.08 0.08 0.09 0.09 0.16 0.20
CIGARS 0.05 0.06 0.06 0.07 0.08 0.08
ALCOHOL 0.04 0.04 0.06 0.07 0.05 0.05

50629

Table 4.49P P Values from Tests of Differences of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older Who Initiated Use Prior to the Age of 18, by Gender: 2003 Versus 2002
Substance MEAN AGE
Total Male Female
2002 2003 2002 2003 2002 2003
ILLICIT DRUG1 0.2960   0.6877   0.0580  
     Marijuana and Hashish 0.1415   0.9910   0.0443  
     Cocaine 0.7669   0.2282   0.2783  
          Crack 0.3395   0.5522   0.4557  
     Heroin 0.7493   *   0.8361  
     Hallucinogens 0.4208   0.2103   0.0522  
          LSD 0.1547   0.5591   0.0188  
          PCP 0.4781   0.5636   0.8062  
          Ecstasy 0.0450   0.4566   0.0518  
     Inhalants 0.3794   0.6661   0.0363  
     Nonmedical Use of Psychotherapeutics2 0.4845   0.9166   0.2873  
          Pain Relievers 0.6438   0.6564   0.2981  
               OxyContin® --   --   --  
          Tranquilizers 0.2755   0.2349   0.6691  
          Stimulants 0.6506   0.8139   0.7432  
               Methamphetamine 0.6097   0.4003   0.9087  
          Sedatives 0.7425   0.9030   0.4182  
ILLICIT DRUG OTHER THAN MARIJUANA1 0.8682   0.5973   0.4681  
CIGARETTES 0.0444   0.0478   0.3807  
     Daily Cigarette Use3 0.7479   0.0248   0.0522  
SMOKELESS TOBACCO 0.3007   0.9287   0.0429  
CIGARS 0.4680   0.8247   0.3765  
ALCOHOL 0.8222   0.1957   0.0967  

50718

Table 4.50D Standard Errors of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older Who Initiated Use Prior to the Age of 21, by Gender: 2002 and 2003
Substance MEAN AGE
Total Male Female
2002 2003 2002 2003 2002 2003
ILLICIT DRUG1 0.07 0.07 0.09 0.11 0.09 0.09
     Marijuana and Hashish 0.06 0.06 0.09 0.10 0.09 0.08
     Cocaine 0.11 0.10 0.15 0.12 0.17 0.17
          Crack 0.27 0.22 0.33 0.32 0.38 0.25
     Heroin 0.28 0.38 0.33 0.55 0.40 0.44
     Hallucinogens 0.10 0.10 0.13 0.13 0.13 0.14
          LSD 0.15 0.20 0.20 0.21 0.22 0.36
          PCP 0.22 0.28 0.34 0.36 0.31 0.41
          Ecstasy 0.09 0.12 0.13 0.15 0.12 0.17
     Inhalants 0.12 0.13 0.16 0.18 0.16 0.14
     Nonmedical Use of Psychotherapeutics2 0.07 0.08 0.10 0.11 0.11 0.11
          Pain Relievers 0.08 0.08 0.11 0.11 0.11 0.11
               OxyContin® -- -- -- -- -- --
          Tranquilizers 0.12 0.12 0.19 0.16 0.15 0.15
          Stimulants 0.13 0.14 0.18 0.20 0.17 0.19
               Methamphetamine 0.20 0.21 0.32 0.30 0.25 0.28
          Sedatives 0.27 0.33 0.49 0.51 0.30 0.41
ILLICIT DRUG OTHER THAN MARIJUANA1 0.07 0.08 0.11 0.12 0.10 0.11
CIGARETTES 0.08 0.08 0.11 0.11 0.10 0.10
     Daily Cigarette Use3 0.10 0.10 0.11 0.14 0.16 0.13
SMOKELESS TOBACCO 0.12 0.10 0.14 0.11 0.23 0.21
CIGARS 0.07 0.06 0.09 0.08 0.11 0.10
ALCOHOL 0.05 0.06 0.09 0.08 0.07 0.08

50629

Table 4.50P P Values from Tests of Differences of Mean Age at First Use among Past Year Initiates of Substance Use Aged 12 or Older Who Initiated Use Prior to the Age of 21, by Gender: 2003 Versus 2002
Substance MEAN AGE
Total Male Female
2002 2003 2002 2003 2002 2003
ILLICIT DRUG1 0.9341   0.4942   0.5645  
     Marijuana and Hashish 0.3416   0.5110   0.5148  
     Cocaine 0.6054   0.6305   0.2003  
          Crack 0.2909   0.4587   0.6369  
     Heroin 0.2776   0.3667   0.4561  
     Hallucinogens 0.7444   0.0585   0.0114  
          LSD 0.9430   0.1207   0.1040  
          PCP 0.0988   0.0878   0.6870  
          Ecstasy 0.8662   0.3960   0.3686  
     Inhalants 0.7632   0.5726   0.6557  
     Nonmedical Use of Psychotherapeutics2 0.3045   0.9211   0.1616  
          Pain Relievers 0.8560   0.9654   0.7450  
               OxyContin® --   --   --  
          Tranquilizers 0.5012   0.6796   0.4697  
          Stimulants 0.8431   0.9167   0.8087  
               Methamphetamine 0.3884   0.2414   0.6166  
          Sedatives 0.6387   0.3477   0.9215  
ILLICIT DRUG OTHER THAN MARIJUANA1 0.9683   0.7602   0.7840  
CIGARETTES 0.1570   0.3610   0.2176  
     Daily Cigarette Use3 0.7247   0.2296   0.3930  
SMOKELESS TOBACCO 0.5206   0.1530   0.1395  
CIGARS 0.5971   0.8241   0.5647  
ALCOHOL 0.1087   0.1614   0.3350  

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This page was last updated on June 16, 2008.