Table 2.4. Admissions aged 12 and older, by frequency of use and usual route of administration according to primary substance of abuse: 2011 Percent distribution
[Based on administrative data reported to TEDS by all reporting States and jurisdictions.]
Frequency of use and usual route of administration	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
Total	1,844,719	400,012	324,370	278,481	186,986	99,401	44,426	333,578	110,471	17,875	3,657	1,818	5,784	1,203	36,657
Frequency of use
No use in the past month	28.0	26.0	27.4	17.8	21.8	27.5	39.5	36.0	46.0	18.3	23.8	43.9	33.7	34.3	26.9
1-3 times in the past month	12.2	14.9	13.6	4.0	5.8	13.1	17.3	17.1	14.2	7.8	9.0	12.3	16.5	15.4	6.1
1-2 times in the past week	8.8	12.3	10.6	2.9	3.6	9.9	10.2	10.5	9.2	4.3	5.2	7.4	11.9	10.4	5.4
3-6 times in the past week	11.2	12.2	12.7	7.9	8.4	13.8	11.0	12.1	11.9	9.1	12.1	11.1	12.3	12.4	8.9
Daily	39.8	34.6	35.8	67.4	60.5	35.7	22.0	24.3	18.7	60.5	50.0	25.2	25.5	27.4	52.7
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	1,809,272	395,260	322,194	277,488	185,362	98,864	43,716	330,451	109,603	17,766	3,607	1,800	5,752	1,182	16,227
Usual route of administration
Oral	48.2	99.4	99.6	1.1	58.0	- -	6.5	2.2	6.1	92.3	90.4	58.2	4.4	6.0	44.2
Smoking	28.4	0.2	0.2	3.8	2.4	100.0	- -	96.8	62.7	1.1	2.5	21.0	93.3	6.6	19.8
Inhalation	8.9	0.1	0.1	24.9	22.2	- -	79.4	0.7	8.0	5.2	3.5	8.8	1.8	77.3	17.5
Injection	14.1	0.1	*	69.8	16.3	- -	11.1	*	22.4	1.1	2.6	10.3	0.2	7.9	6.1
Other	0.5	0.1	0.1	0.4	1.1	- -	3.0	0.2	0.7	0.3	0.9	1.6	0.3	2.1	12.5
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
No. of admissions	1,815,611	398,788	323,828	277,556	185,730	99,401	43,637	331,413	109,668	17,809	3,622	1,802	5,763	1,192	15,402
*  Less than 0.05 percent.
- -  Quantity is zero.
SOURCE: Center for Behavioral Health Statistics and Quality, Substance Abuse and Mental Health Services Administration, Treatment Episode Data Set (TEDS). Data received through 10.15.12.