Table 2.5. Admissions aged 12 and older, by age of first use and number of prior treatment episodes according to primary substance of abuse: 2010
Percent distribution
[Based on administrative data reported to TEDS by all reporting States and jurisdictions.]
Age of first use and number of prior treatment episodes All admis-
sions
Primary substance at admission
Alcohol Opiates Cocaine Mari-
juana/
hashish
Metham-
phetamine/
amphet-
amines
Tran-
quil-
izers
Seda-
tives
Hallu-
cino-
gens
PCP Inhal-
ants
Other/
none
speci-
fied
Alcohol
only
With
second-
ary
drug
Heroin Other
opiates
Smoked
cocaine
Other
route
Age of first use1            
12 years or under  13.4  14.1  22.7   2.2   2.8   2.2   3.7  24.3   6.2   3.6   4.6   7.5   4.4  13.7  18.1
13 to 14 years  16.7  16.6  23.9   5.8   5.7   4.3   7.0  30.7  12.9   7.5   7.9  16.5  10.9  18.4  11.0
15 to 16 years  21.3  27.5  27.0  12.4  12.6   9.2  14.8  25.4  18.0  14.4  12.8  24.4  19.5  17.8  16.4
17 to 18 years  17.1  21.8  15.3  19.4  16.7  13.7  19.4  12.3  17.9  14.4  12.9  19.4  20.8  11.9  14.7
19 to 20 years   8.4   7.8   4.5  14.7  12.7  12.9  13.9   3.3  10.2   9.5  10.0   9.3  12.5   7.1   9.1
21 to 25 years  11.9   8.8   4.6  23.1  21.6  24.3  20.9   2.7  16.0  16.3  15.4  11.5  20.1  10.2  13.7
26 to 30 years   5.4   1.7   1.0  11.8  12.2  16.2  10.5   0.7   8.6  11.6  11.3   5.1   8.0   7.6   6.8
Over 30 years   5.8   1.7   0.9  10.5  15.7  17.2   9.8   0.5  10.2  22.6  25.1   6.3   3.9  13.4  10.1
Total  100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0
No. of admissions  1,786,869 407,993 331,124 255,589 155,722 103,786 43,149 332,674 111,769 15,624 4,087 1,659 4,489 1,441 17,763
No. of prior treatment episodes            
None  40.4  46.4  35.2  20.1  40.0  25.8  35.5  55.8  41.8  36.3  52.9  48.2  30.8  54.6  56.9
1  22.2  21.2  22.2  19.3  25.3  21.2  24.0  23.8  25.3  22.0  22.4  22.0  25.3  19.8  16.9
2  12.6  10.7  13.8  14.7  13.9  15.5  14.9  10.4  14.5  12.8  11.4  10.7  16.7  10.8   7.1
3   7.5   5.9   8.5  11.2   7.8  11.0   8.7   4.6   7.4   7.5   5.1   7.1  10.8   4.5   4.1
4   4.2   3.4   5.1   6.7   4.1   6.9   4.8   2.1   4.0   4.6   2.6   3.8   5.8   2.7   2.2
5 or more  13.0  12.4  15.3  28.0   8.9  19.6  12.1   3.3   7.0  16.8   5.7   8.2  10.7   7.6  12.8
Total  100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0
No. of admissions  1,652,662 366,226 288,578 228,510 145,639  96,004 40,566 322,085 109,515 13,116 3,819 1,611 4,380 1,412 31,201
1 For drugs other than alcohol, this is the age at which the client first used the substance. For alcohol, this is the age at first intoxication.
SOURCE: Center for Behavioral Health Statistics and Quality, Substance Abuse and Mental Health Services Administration, Treatment Episode Data Set (TEDS). Data received through 10.10.11.

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