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: 2009
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  13.8  14.7  22.9   2.4   4.1   2.5   4.5  24.8   6.3   5.6   5.8   9.3   4.6  15.5  11.7
13 to 14 years  16.8  16.7  24.0   5.7   5.7   4.3   7.0  31.1  12.7   8.0   9.0  17.7  11.7  21.2  10.5
15 to 16 years  21.3  27.1  26.8  12.4  12.3   9.8  14.9  25.3  18.3  14.9  14.4  26.3  20.1  16.7  17.1
17 to 18 years  16.8  21.8  15.3  19.0  15.4  13.7  18.7  11.4  16.7  13.3  12.2  18.7  21.3  11.9  14.8
19 to 20 years   8.3   7.8   4.5  14.8  12.1  11.6  13.3   3.3  10.2   9.5   9.1   9.5  12.0   8.2   9.7
21 to 25 years  11.8   8.6   4.6  22.5  21.5  24.2  21.1   2.8  16.3  15.6  16.1   9.8  17.8   8.6  14.9
26 to 30 years   5.4   1.7   1.1  11.8  12.0  16.0  10.4   0.7   9.0  10.8  11.1   4.4   8.2   6.0   8.1
Over 30 years   6.0   1.7   0.9  11.3  16.9  18.0  10.1   0.5  10.6  22.4  22.4   4.3   4.3  12.0  13.2
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  1,920,196 456,669 356,318 281,521 137,292 130,966 51,359 350,912 114,291 14,249 4,975 1,761 4,383 1,506 13,994
No. of prior treatment episodes            
None  43.2  48.7  38.1  23.1  43.0  30.7  41.7  58.1  44.9  38.1  58.9  47.6  35.6  55.8  65.3
1  21.3  20.4  21.4  19.2  24.2  20.5  22.2  22.5  24.1  21.0  18.5  23.6  24.3  21.3  15.2
2  12.1  10.4  13.3  14.1  13.5  14.7  13.8  10.0  13.8  12.8   8.6  12.2  15.2  10.7   6.6
3   7.0   5.6   8.1  10.4   7.1  10.0   7.8   4.1   7.0   7.4   5.0   6.2  10.0   3.5   3.4
4   4.0   3.3   4.7   6.4   3.9   6.1   4.2   1.9   3.8   4.5   2.8   3.2   4.8   2.6   1.8
5 or more  12.4  11.6  14.4  26.8   8.3  18.0  10.3   3.4   6.4  16.3   6.1   7.3  10.2   6.1   7.8
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  1,785,919 413,266 311,774 252,321 128,881 122,400 48,440 339,462 111,443 12,183 4,799 1,719 4,303 1,481 33,447
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 11.03.10.

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