Table 3 Admissions by primary substance of abuse, according to frequency of use, route of administration, age at first use, and number of prior treatment epsiodes: TEDS 2003 Percent distribution
[Based on administrative data reported to TEDS by all reporting States and jurisdictions.]
Frequency of use, route of administration, age at first use, and number of prior treatment episodes	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	1,841,522	426,720	341,278	272,815	51,071	180,851	68,705	284,532	135,737	1,227	7,993	4,134	2,190	4,086	1,170	59,013
Frequency of use
Daily	42.7	36.0	40.4	78.9	66.7	42.3	28.3	26.8	31.6	36.7	60.7	49.1	18.5	30.0	28.0	35.1
3-6 times per week	10.8	11.5	11.3	4.7	8.1	15.0	13.6	11.7	11.4	9.4	7.5	11.0	10.3	11.2	15.6	8.8
1-2 times per week	9.1	12.1	10.0	2.0	3.1	9.9	11.2	10.5	8.6	10.1	5.1	5.6	9.0	11.1	11.0	6.8
1-3 times in the past month	11.5	14.4	11.8	2.6	4.7	10.2	14.4	16.4	12.3	13.9	7.2	8.4	11.1	14.3	15.4	7.7
No use in the past month	26.0	26.0	26.5	11.8	17.5	22.6	32.5	34.6	36.3	30.0	19.6	25.9	51.1	33.4	30.0	41.7
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	1,708,822	405,663	323,293	251,612	49,329	177,800	61,103	276,936	133,781	1,181	7,661	3,955	2,072	3,666	1,115	9,655
Route of administration
Oral	46.7	99.1	98.8	2.0	73.6	- -	8.7	2.5	5.7	53.5	94.0	88.3	72.2	6.8	4.5	57.3
Smoking	31.7	0.6	0.8	2.5	2.7	100.0	- -	96.2	56.2	34.4	2.7	4.4	17.0	87.7	4.2	18.2
Injection	11.6	0.1	0.1	60.9	11.8	- -	12.8	0.1	21.6	4.4	0.9	3.4	5.6	1.2	1.3	2.8
Inhalation	9.5	0.1	0.1	33.7	11.1	- -	75.7	0.9	15.1	6.8	2.0	3.0	4.3	3.7	88.8	4.1
Other	0.6	0.1	0.1	0.9	0.8	- -	2.9	0.2	1.4	0.9	0.4	0.9	0.9	0.6	1.1	17.6
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	1,714,447	406,250	322,416	254,560	49,453	180,851	59,995	278,983	133,418	1,191	7,729	3,970	2,087	3,858	1,133	8,553
Age at first use
12 years or under	14.3	14.4	24.3	3.3	3.8	3.8	3.8	25.5	6.1	14.9	5.0	6.6	10.5	6.6	27.5	23.2
13 to 14 years	16.4	16.0	23.7	6.8	4.3	5.0	7.0	30.9	11.3	14.6	7.4	8.2	20.5	12.6	27.5	10.5
15 to 16 years	21.2	27.3	27.2	12.7	9.4	9.6	14.4	24.7	18.1	18.6	12.1	13.4	24.6	23.0	18.7	16.2
17 to 18 years	16.1	22.2	13.9	17.0	11.8	13.0	18.1	11.2	17.1	16.1	10.8	11.8	18.2	21.9	8.8	11.3
19 to 20 years	7.9	7.7	4.3	13.2	10.6	10.8	12.9	3.5	10.8	9.7	8.5	9.2	9.2	12.7	4.8	6.4
21 to 25 years	11.1	8.1	4.0	20.2	19.1	23.1	20.9	2.9	16.6	11.8	14.5	15.0	9.9	15.4	4.1	10.3
26 to 30 years	5.9	2.0	1.3	12.6	14.3	16.2	11.3	0.8	9.8	5.4	11.5	11.3	4.1	4.9	3.5	6.3
Over 30 years	7.0	2.4	1.3	14.2	26.6	18.5	11.6	0.7	10.2	8.8	30.1	24.4	3.1	2.8	5.0	15.7
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	1,555,853	393,209	308,443	231,680	46,984	159,400	62,706	254,403	72,560	1,065	7,497	3,688	1,995	2,670	1,097	8,456
No. of prior treatment episodes
None	43.3	50.4	37.2	21.8	40.4	33.2	39.7	58.2	50.1	55.0	43.9	48.3	47.0	42.4	52.7	72.5
1	23.3	22.3	23.3	21.3	25.0	24.0	25.7	24.7	26.7	21.6	22.6	23.5	25.2	26.6	18.3	14.3
2	12.4	10.7	13.9	16.0	13.7	15.3	14.5	9.2	11.9	11.2	12.1	12.1	12.5	15.0	8.4	4.9
3	7.0	5.8	8.4	10.7	7.7	9.5	7.7	3.7	5.4	5.3	7.0	6.1	6.4	6.9	5.8	2.4
4	3.8	3.0	4.7	6.7	4.0	5.3	4.1	1.6	2.3	2.6	3.7	3.0	3.4	3.3	2.5	1.4
5 or more	10.2	7.9	12.5	23.4	9.1	12.7	8.3	2.6	3.6	4.3	10.6	7.0	5.5	5.7	12.3	4.5
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	1,513,188	338,530	265,099	216,031	43,327	160,690	56,284	252,962	121,526	1,104	6,141	3,509	1,815	3,742	1,025	41,403
- -  Quantity is zero.
SOURCE: Office of Applied Studies, Substance Abuse and Mental Health Services Administration, Treatment Episode Data Set (TEDS). Data received through 4.11.05.