Table 2.4 Admissions aged 12 and older by frequency of use and route of administration, according to primary substance of abuse: TEDS 2008 Percent distribution
[Based on administrative data reported to TEDS by all reporting States and jurisdictions.]
Frequency of use and route of administration	All admis- sions	Primary substance at admission
		Alcohol		Opiates		Cocaine		Mari- juana/ hashish	Metham- phetamine/ amphet- amine	Tran- quil- izers	Seda- tives	Hallu- cino- gens	PCP	Inhal- ants	Other/ none speci- fied
		Alcohol only	Secon- dary drug	Heroin	Other opiates	Smoked cocaine	Other route
Total	1,893,640	437,204	347,058	267,335	111,251	152,819	61,152	321,648	121,485	11,234	4,416	1,709	3,853	1,224	51,252
Frequency of use
No use in the past month	29.0	26.2	27.4	16.2	20.4	30.7	42.0	37.0	49.1	20.4	26.3	50.3	39.5	30.8	38.2
1-3 times in the past month	12.6	15.6	13.1	3.8	5.4	12.1	15.8	16.6	15.7	7.3	9.6	13.3	17.2	19.2	8.1
1-2 times per week	9.2	12.9	10.3	2.7	3.6	9.3	10.2	10.3	9.3	4.4	6.5	7.2	9.7	11.0	7.1
3-6 times per week	11.5	13.0	13.0	6.2	9.5	13.9	11.5	12.0	10.9	8.8	12.7	10.4	11.0	12.5	11.2
Daily	37.8	32.3	36.1	71.2	61.1	33.9	20.5	24.1	15.1	59.1	44.9	18.9	22.5	26.6	35.4
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
No. of admissions	1,824,904	427,923	342,836	266,028	108,151	152,172	60,185	315,032	120,030	10,929	4,292	1,673	3,774	1,201	10,678
Route of administration
Oral	48.4	99.5	99.6	1.3	69.5	- -	5.5	2.3	5.0	93.5	90.7	69.9	5.8	8.0	60.7
Smoking	30.4	0.2	0.2	2.5	1.8	100.0	- -	96.6	66.2	2.2	3.1	18.8	91.9	5.2	17.5
Inhalation	11.7	0.2	0.1	30.8	17.0	- -	81.6	0.8	9.1	3.3	3.2	4.7	1.8	79.6	6.6
Injection	9.1	*	0.1	64.9	10.7	- -	10.3	0.1	19.0	0.7	2.7	5.4	0.4	6.1	4.5
Other	0.4	0.1	*	0.5	1.0	- -	2.6	0.2	0.7	0.3	0.3	1.1	0.1	1.1	10.7
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
No. of admissions	1,833,522	428,790	344,742	265,859	109,597	152,819	59,753	320,014	120,737	11,132	4,324	1,689	3,784	1,207	9,075
* Less than 0.05 percent.
- -  Quantity is zero.
SOURCE: Office of Applied Studies, Substance Abuse and Mental Health Services Administration, Treatment Episode Data Set (TEDS). Data received through 8.31.09.