Table 3.4
Admissions by primary substance of abuse, according to frequency of use, usual route of administration, and age at first use: TEDS 2005
Percent distribution
[Based on administrative data reported to TEDS by all reporting States and jurisdictions. See Table 4.2a.]
Frequency of use, usual route of administration, and age at first use All admis-sions Primary substance at admission
Alcohol Opiates Cocaine Mari-juana/ hashish Stimulants Tran-quil-izers Seda-tives Hallu-cino-gens PCP Inhal-ants Other/ none speci-fied
Alcohol only With secondary drug Heroin Other opiates Smoked cocaine Other route Metham-phetamine/ amphet-amine Other stimu-lants
Total 1,849,548 398,656 324,990 254,345 67,887 185,236 71,255 292,250 169,489 981 8,039 4,361 2,057 2,807 1,372 65,823
Frequency of use                                
No use in the past month 27.3 26.4 26.9 14.1 19.9 24.9 33.0 35.4 38.9 31.6 20.3 28.6 52.2 46.4 31.9 35.1
1-3 times in the past month 11.9 15.0 12.4 2.9 4.8 10.7 14.6 16.6 13.0 12.1 8.0 8.9 11.5 13.2 16.3 8.2
1-2 times per week 8.8 12.1 9.7 2.2 3.4 9.2 11.1 10.1 8.5 9.1 4.8 6.2 7.0 8.2 7.5 6.5
3-6 times per week 11.4 12.6 12.2 5.7 8.6 15.0 14.3 11.8 11.7 14.4 9.1 11.5 9.5 10.5 13.2 8.8
Daily 40.5 33.9 38.7 75.2 63.3 40.2 27.0 26.1 27.9 32.7 57.8 44.8 19.8 21.6 31.1 41.4
Total 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0
No. of admissions 1,760,677 383,852 319,096 252,850 67,302 182,808 69,825 288,426 167,845 963 7,920 4,312 2,023 2,774 1,352 9,329
Usual route of administration                              
Oral 44.3 99.3 99.5 1.2 71.8 - - 5.0 2.0 4.6 53.6 93.0 89.7 59.2 6.3 4.0 53.3
Smoking 33.5 0.4 0.3 2.2 1.9 100.0 - - 96.9 62.9 32.4 3.0 2.8 29.8 89.4 5.5 17.5
Injection 11.9 0.1 0.1 63.0 12.2 - - 11.4 0.1 18.9 6.8 1.1 3.8 6.0 1.0 1.5 3.1
Inhalation 9.8 0.1 0.1 32.9 13.1 - - 80.6 0.8 12.4 6.8 2.6 3.1 4.2 2.7 87.6 6.2
Other 0.5 0.1 0.1 0.7 0.9 - - 3.1 0.2 1.2 0.4 0.3 0.6 0.7 0.6 1.3 20.0
Total 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0
No. of admissions 1,751,849 379,783 313,783 252,332 67,312 185,236 67,748 289,996 167,024 970 7,907 4,315 2,025 2,752 1,368 9,298
Age at first use                                
12 years or under 13.4 13.9 23.4 3.2 2.8 3.2 4.0 24.9 5.0 14.4 4.7 4.8 9.7 6.1 22.2 19.0
13 to 14 years 16.3 16.2 24.1 6.6 4.5 4.9 7.2 30.8 11.3 15.2 7.4 7.8 17.8 14.1 27.3 10.2
15 to 16 years 21.3 27.5 27.6 13.3 10.2 9.8 15.3 25.3 18.1 19.3 13.3 12.8 26.5 21.1 20.2 15.3
17 to 18 years 16.4 22.5 14.3 17.7 12.7 13.3 18.8 11.4 17.4 14.3 10.8 11.7 18.2 22.6 9.6 11.7
19 to 20 years 8.2 7.8 4.3 13.8 11.7 11.3 13.0 3.4 10.9 10.2 9.6 9.4 9.2 12.1 6.0 7.4
21 to 25 years 11.5 8.3 4.2 20.5 20.5 23.0 20.8 2.9 16.7 10.3 15.3 15.7 9.9 14.7 4.8 12.7
26 to 30 years 5.8 1.8 1.1 11.9 13.7 15.7 10.5 0.8 9.3 6.4 11.9 11.6 3.9 5.6 3.8 7.4
Over 30 years 7.0 2.0 1.0 13.0 23.9 18.9 10.4 0.6 11.3 10.0 27.1 26.2 4.9 3.7 6.0 16.4
Total 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0
No. of admissions 1,583,637 370,734 299,937 223,801 63,553 168,544 64,530 263,144 103,073 862 7,608 3,956 1,833 2,063 996 9,003
- - Quantity is zero.
SOURCE: Office of Applied Studies, Substance Abuse and Mental Health Services Administration, Treatment Episode Data Set (TEDS). Data received through 10.3.06.

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