Table 3.2. Clients in treatment, by type of care received, and clients receiving methadone or buprenorphine: 2007-2011¹ Number and percent distribution
Type of care received and clients receiving methadone or buprenorphine	Number of clients					Percent distribution
	2007	2008	2009	2010	2011	2007	2008	2009	2010	2011
Total	1,135,425	1,192,490	1,182,077	1,175,462	1,224,127	100.0	100.0	100.0	100.0	100.0
Type of care received
Outpatient	1,016,913	1,071,572	1,064,562	1,056,532	1,095,897	89.6	89.9	90.1	89.9	89.5
Regular	595,459	644,009	598,282	593,077	617,715	52.4	54.0	50.6	50.5	50.5
Intensive	132,977	130,260	147,132	138,188	141,964	11.7	10.9	12.4	11.8	11.6
Detoxification	12,705	11,339	10,786	13,216	13,450	1.1	1.0	0.9	1.1	1.1
Day treatment/partial hospitalization	22,297	22,835	23,822	22,458	23,338	2.0	1.9	2.0	1.9	1.9
Methadone maintenance	253,475	263,129	284,540	289,593	299,430	22.3	22.1	24.1	24.6	24.5
Residential (non-hospital)	103,709	107,441	103,174	103,692	112,827	9.1	9.0	8.7	8.8	9.2
Detoxification	7,536	6,746	6,067	7,549	9,326	0.7	0.6	0.5	0.6	0.8
Short-term treatment (30 days or fewer)	24,171	25,566	25,807	26,014	29,164	2.1	2.1	2.2	2.2	2.4
Long-term treatment (more than 30 days)	72,002	75,129	71,300	70,129	74,337	6.3	6.3	6.0	6.0	6.1
Hospital inpatient	14,803	13,477	14,341	15,238	15,403	1.3	1.1	1.2	1.3	1.3
Detoxification	6,319	5,686	6,427	6,476	6,179	0.6	0.5	0.5	0.6	0.5
Treatment	8,484	7,791	7,914	8,762	9,224	0.7	0.7	0.7	0.7	0.8
Clients receiving methadone or buprenorphine
Total	266,031	283,803	308,781	327,099	340,456	23.4	23.8	26.1	27.8	27.8
Clients receiving methadone	262,684	268,071	284,608	299,643	307,780	23.1	22.5	24.1	25.5	25.1
Clients receiving buprenorphine²	3,347	15,732	24,173	27,456	32,676	0.3	1.3	2.0	2.3	2.7
¹Survey reference dates were March 30, 2007, and March 31, 2008-2011. See Appendix A for changes in the survey base, methods, and instruments that affect analysis of trends over time.
²Non-OTP buprenorphine clients were not included in 2007.
NOTE: Percentages may not sum to 100 percent because of rounding.
SOURCE: Center for Behavioral Health Statistics and Quality, Substance Abuse and Mental Health Services Administration, National Survey of Substance Abuse Treatment Services (N-SSATS), 2007-2011.