Table 2.4. Admissions aged 12 and older, by frequency of use and usual route of administration according to primary substance of abuse: 2010 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	1,820,737	411,388	332,699	256,256	157,171	104,564	43,587	335,833	112,473	15,707	4,117	1,675	4,501	1,449	39,317
Frequency of use
No use in the past month	28.7	26.8	27.9	18.1	21.4	29.7	40.8	36.3	44.4	18.9	22.9	42.7	36.7	27.6	31.7
1-3 times in the past month	12.6	15.7	13.6	4.0	5.9	13.0	16.2	16.7	14.5	8.1	9.3	12.5	17.4	14.0	5.6
1-2 times in the past week	9.2	12.9	10.8	2.9	3.9	9.9	10.2	10.2	9.5	4.7	6.0	10.4	11.7	10.0	5.7
3-6 times in the past week	11.4	12.3	12.8	7.5	9.2	13.5	11.3	12.0	12.7	9.1	10.3	11.6	11.6	11.2	9.6
Daily	38.2	32.3	34.9	67.5	59.7	34.0	21.5	24.6	19.0	59.2	51.6	22.8	22.5	37.2	47.4
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	1,788,104	406,720	330,628	255,434	155,982	103,868	43,063	333,135	111,770	15,611	4,075	1,659	4,481	1,426	20,252
Usual route of administration
Oral	49.1	99.5	99.6	1.2	61.7	- -	5.4	1.9	5.6	93.5	89.4	73.2	5.2	6.0	43.2
Smoking	29.2	0.2	0.2	3.3	2.6	100.0	- -	97.1	64.2	1.2	1.7	15.0	92.9	5.5	26.4
Inhalation	8.3	0.1	0.1	25.4	20.3	- -	80.3	0.8	7.9	4.2	5.1	4.3	1.6	70.2	14.7
Injection	12.9	0.1	0.1	69.7	14.3	- -	11.5	0.1	21.6	0.8	3.0	6.2	0.3	16.7	6.1
Other	0.4	0.1	0.1	0.5	1.2	- -	2.8	0.2	0.6	0.4	0.9	1.3	0.1	1.5	9.6
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
No. of admissions	1,792,094	410,232	332,042	255,568	156,369	104,564	42,883	333,830	111,818	15,633	4,091	1,663	4,486	1,440	17,475
- -  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 10.10.11.