1997 National Household Survey on Drug Abuse

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Discussion

Table 2.1 Percentage and Estimated Number of Users (in Thousands) of Illicit Drugs, Alcohol, and Tobacco in the U.S. Civilian, Noninstitutionalized Population Aged 12 or Older in Their Lifetime, the Past Year, and the Past Month: 1997 Note: Due to improved survey procedures implemented in 1994, these estimates are not comparable with those presented in NHSDA Main Findings prior to 1994.

1 Any illicit drug indicates use at least once of marijuana or hashish, cocaine (including crack), inhalants, hallucinogens (including PCP and LSD), heroin, or any prescription-type psychotherapeutic used nonmedically. Any illicit drug other than marijuana indicates use at least once of any of these listed drugs, regardless of marijuana use; marijuana users who have also used any of the other listed drugs are included.
2 Nonmedical use of any prescription-type stimulant, sedative, tranquilizer, or analgesic; does not include over-the-counter drugs.
Source: Office of Applied Studies, SAMHSA, National Household Survey on Drug Abuse, 1997.

Table 2.2 Trends in Percentage of Respondents Aged 12 or Older Reporting Drug Use in Their Lifetime: 1979-1997

Note: Estimates here for 1979 through 1993 may differ from estimates for these survey years that were published in other NHSDA reports. The estimates shown here for 1979 through 1993 have been adjusted to improve their comparability with estimates based on the new version of the NHSDA instrument that was fielded in 1994 and subsequent NHSDAs. See Appendix E for further discussion of adjustment procedures.

--Estimate not available.

aDifference between this estimate and 1997 estimate is statistically significant at the .05 level.

bDifference between this estimate and 1997 estimate is statistically significant at the .01 level.

1 Any illicit drug indicates use at least once of marijuana or hashish, cocaine (including crack), inhalants, hallucinogens (including PCP and LSD), heroin, or any prescription-type psychotherapeutic used nonmedically. Any illicit drug other than marijuana indicates use at least once of any of these listed drugs, regardless of marijuana use; marijuana users who have also used any of the other listed drugs are included.
2 Nonmedical use of any prescription-type stimulant, sedative, tranquilizer, or analgesic; does not include over-the counter drugs.

Source: Office of Applied Studies, SAMHSA, National Household Survey on Drug Abuse, 1979-1997.

Table 2.3 Trends in Percentage of Respondents Aged 12 or Older Reporting Drug Use in the Past Year: 1979-1997

Note: Estimates here for 1979 through 1993 may differ from estimates for these survey years that were published in other NHSDA reports. The estimates shown here for 1979 through 1993 have been adjusted to improve their comparability with estimates based on the new version of the NHSDA instrument that was fielded in 1994 and subsequent NHSDAs. See Appendix E for further discussion of adjustment procedures.

--Estimate not available.

aDifference between this estimate and 1997 estimate is statistically significant at the .05 level.

bDifference between this estimate and 1997 estimate is statistically significant at the .01 level.

1 Any illicit drug indicates use at least once of marijuana or hashish, cocaine (including crack), inhalants, hallucinogens (including PCP and LSD), heroin, or any prescription-type psychotherapeutic used nonmedically. Any illicit drug other than marijuana indicates use at least once of any of these listed drugs, regardless of marijuana use; marijuana users who have also used any of the other listed drugs are included.
2 Nonmedical use of any prescription-type stimulant, sedative, tranquilizer, or analgesic; does not include over-the counter drugs.

Source: Office of Applied Studies, SAMHSA, National Household Survey on Drug Abuse, 1979-1997.

Table 2.4 Trends in Percentage of Respondents Aged 12 or Older Reporting Drug Use in the Past Month: 1979-1997

Note 1: Estimates here for 1979 through 1993 may differ from estimates for these survey years that were published in other NHSDA reports. The estimates shown here for 1979 through 1993 have been adjusted to improve their comparability with estimates based on the new version of the NHSDA instrument that was fielded in 1994 and subsequent NHSDAs. See Appendix E for further discussion of adjustment procedures.
Note 2: Estimates for "binge" and heavy alcohol use in this table differ from the corresponding estimates in Chapter 7 because of different treatment of missing values. In this table, respondents who had a missing response to the item "In the past 30 days, on how many days did you have five or more drinks on the same occasion?" were excluded from the analysis. Conversely, in Chapter 7, those who had a missing response on this "days of use" item were essentially treated as nonbinge or nonheavy users.

--Estimate not available.

aDifference between this estimate and 1997 estimate is statistically significant at the .05 level.

bDifference between this estimate and 1997 estimate is statistically significant at the .01 level.

1 Any illicit drug indicates use at least once of marijuana or hashish, cocaine (including crack), inhalants, hallucinogens (including PCP and LSD), heroin, or any prescription-type psychotherapeutic used nonmedically. Any illicit drug other than marijuana indicates use at least once of any of these listed drugs, regardless of marijuana use; marijuana users who have also used any of the other listed drugs are included.
2 Nonmedical use of any prescription-type stimulant, sedative, tranquilizer, or analgesic; does not include over-the counter drugs.
3 "Binge" alcohol use is defined as drinking five or more drinks on the same occasion on at least 1 day in the past 30 days. By "occasion" is meant at the same time or within a couple hours of each other. Heavy alcohol use is defined as drinking five or more drinks on the same occasion on each of 5 or more days in the past 30 days; all heavy alcohol users are also "binge" alcohol users.

Source: Office of Applied Studies, SAMHSA, National Household Survey on Drug Abuse, 1979-1997.

Table 2.5 Trends in Percentage Reporting Drug Use in Their Lifetime, by Age Group: 1979-1997

Note: Estimates here for 1979 through 1993 may differ from estimates for these survey years that were published in other NHSDA reports. The estimates shown here for 1979 through 1993 have been adjusted to improve their comparability with estimates based on the new version of the NHSDA instrument that was fielded in 1994 and subsequent NHSDAs. See Appendix E for further discussion of adjustment procedures.

*Low precision; no estimate reported.

--Estimate not available.

aDifference between this estimate and 1997 estimate is statistically significant at the .05 level.
bDifference between this estimate and 1997 estimate is statistically significant at the .01 level.

1 Use of marijuana or hashish, cocaine (including crack), inhalants, hallucinogens (including PCP and LSD), heroin, or nonmedical use of psychotherapeutics at least once.

Source: Office of Applied Studies, SAMHSA, National Household Survey on Drug Abuse, 1979-1997.

Table 2.6 Trends in Percentage Reporting Drug Use in the Past Year, by Age Group: 1979-1997

Note: Estimates here for 1979 through 1993 may differ from estimates for these survey years that were published in other NHSDA reports. The estimates shown here for 1979 through 1993 have been adjusted to improve their comparability with estimates based on the new version of the NHSDA instrument that was fielded in 1994 and subsequent NHSDAs. See Appendix E for further discussion of adjustment procedures.

--Estimate not available.

aDifference between this estimate and 1997 estimate is statistically significant at the .05 level.

bDifference between this estimate and 1997 estimate is statistically significant at the .01 level.

1 Use of marijuana or hashish, cocaine (including crack), inhalants, hallucinogens (including PCP and LSD), heroin, or nonmedical use of psychotherapeutics at least once.

Source: Office of Applied Studies, SAMHSA, National Household Survey on Drug Abuse, 1979-1997.

Table 2.7 Trends in Percentage Reporting Illicit Drug Use in the Past Month, by Age Group: 1979-1997

Note: Estimates here for 1979 through 1993 may differ from estimates for these survey years that were published in other NHSDA reports. The estimates shown here for 1979 through 1993 have been adjusted to improve their comparability with estimates based on the new version of the NHSDA instrument that was fielded in 1994 and subsequent NHSDAs. See Appendix E for further discussion of adjustment procedures.

--Estimate not available.

aDifference between this estimate and 1997 estimate is statistically significant at the .05 level.
bDifference between this estimate and 1997 estimate is statistically significant at the .01 level.

1 Use of marijuana or hashish, cocaine (including crack), inhalants, hallucinogens (including PCP and LSD), heroin, or nonmedical use of psychotherapeutics at least once.

Source: Office of Applied Studies, SAMHSA, National Household Survey on Drug Abuse, 1979-1997.

Table 2.8 Trends in Percentage Reporting Alcohol and Tobacco Use in the Past Month, by Age Group: 1979-1997

Note 1: Estimates here for 1979 through 1993 may differ from estimates for these survey years that were published in other NHSDA reports. The estimates shown here for 1979 through 1993 have been adjusted to improve their comparability with estimates based on the new version of the NHSDA instrument that was fielded in 1994 and subsequent NHSDAs. See Appendix E for further discussion of adjustment procedures.
Note 2: Estimates for "binge" and heavy alcohol use in this table differ from the corresponding estimates in Chapter 7 because of different treatment of missing values. In the present table, respondents who had a missing response to the item "In the past 30 days, or how many days did you have five or more drinks on the same occasion?" were excluded from the analysis. Conversely, in Chapter 7, those who had a missing response on this days of use item were essentially treated as nonbinge or nonheavy users.

--Estimate not available.

aDifference between this estimate and 1997 estimate is statistically significant at the .05 level.

bDifference between this estimate and 1997 estimate is statistically significant at the .01 level.

1 "Binge" alcohol use is defined as drinking five or more drinks on the same occasion on at least one day in the past 30 days. By "occasion" is meant at the same time or within a couple hours of each other. Heavy alcohol use is defined as drinking five or more drinks on the same occasion on each of five or more days in the past 30 days; all heavy alcohol users are also "binge" alcohol users.

Source: Office of Applied Studies, SAMHSA, National Household Survey on Drug Abuse, 1979-1997.

Table 2.9 Trends in Percentage of Respondents Reporting Drug Use in Their Lifetime, by Age Group: 1996 and 1997

aDifference between 1996 estimate and 1997 estimate is statistically significant at the .05 level.
bDifference between 1996 estimate and 1997 estimate is statistically significant at the .01 level.

1 Any illicit drug indicates use at least once of marijuana or hashish, cocaine (including crack), inhalants, hallucinogens (including PCP and LSD), heroin, or any prescription-type psychotherapeutic used nonmedically. Any illicit drug other than marijuana indicates use at least once of any of these listed drugs, regardless of marijuana use; marijuana users who have also used any of the other listed drugs are included.
2 Nonmedical use of any prescription-type stimulant, sedative, tranquilizer, or analgesic; does not include over-the counter drugs.

Source: Office of Applied Studies, SAMHSA, National Household Survey on Drug Abuse, 1996 and 1997.

Table 2.10 Trends in Percentage of Respondents Reporting Drug Use in the Past Year, by Age Group: 1996 and 1997

*Low precision; no estimate reported.

aDifference between 1996 estimate and 1997 estimate is statistically significant at the .05 level.
bDifference between 1996 estimate and 1997 estimate is statistically significant at the .01 level.

1 Any illicit drug indicates use at least once of marijuana or hashish, cocaine (including crack), inhalants, hallucinogens (including PCP and LSD), heroin, or any prescription-type psychotherapeutic used nonmedically. Any illicit drug other than marijuana indicates use at least once of any of these listed drugs, regardless of marijuana use; marijuana users who have also used any of the other listed drugs are included.
2 Nonmedical use of any prescription-type stimulant, sedative, tranquilizer, or analgesic; does not include over-the counter drugs.

Source: Office of Applied Studies, SAMHSA, National Household Survey on Drug Abuse, 1996 and 1997.

Table 2.11 Trends in Percentage of Respondents Reporting Drug Use in the Past Month, by Age Group: 1996 and 1997

Note: Estimates for "binge" and heavy alcohol use in this table differ from the corresponding estimates in Chapter 7 because of different treatment of missing values. In the present table, respondents who had a missing response to the item "In the past 30 days, on how many days did you have five or more drinks on the same occasion" were excluded from the analysis. Conversely, in Chapter 7, those who had a missing response on this days of use item were essentially treated as nonbinge or nonheavy users.

*Low precision; no estimate reported.

aDifference between 1996 estimate and 1997 estimate is statistically significant at the .05 level.

bDifference between 1996 estimate and 1997 estimate is statistically significant at the .01 level.

1 Any illicit drug indicates use at least once of marijuana or hashish, cocaine (including crack), inhalants, hallucinogens (including PCP and LSD), heroin, or any prescription-type psychotherapeutic used nonmedically. Any illicit drug other than marijuana indicates use at least once of any of these listed drugs, regardless of marijuana use; marijuana users who have also used any of the other listed drugs are included.
2 Nonmedical use of any prescription-type stimulant, sedative, tranquilizer, or analgesic; does not include over-the counter drugs.
3 "Binge" alcohol use is defined as drinking five or more drinks on the same occasion on at least one day in the past 30 days. By "occasion" is meant at the same time or within a couple hours of each other. Heavy alcohol use is defined as drinking five or more drinks on the same occasion on each of 5 or more days in the past 30 days; all heavy alcohol users are also "binge" alcohol users.

Source: Office of Applied Studies, SAMHSA, National Household Survey on Drug Abuse, 1996 and 1997.

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This page was last updated on December 30, 2008.