Table 3.4. Clients under age 18 in treatment, by type of care received, and clients under age 18 in treatment in facilities offering special programs or groups for adolescents: 2007-2011¹ Number and percent distribution
Type of care received and clients under age 18 in facilities with special programs or groups for adolescents	Number of clients under age 18²					Percent distribution
	2007	2008	2009	2010	2011	2007	2008	2009	2010	2011
Total	85,518	86,465	84,326	81,863	82,532	100.0	100.0	100.0	100.0	100.0
Type of care received
Outpatient	74,500	76,484	74,623	71,303	71,687	87.1	88.5	88.5	87.1	86.9
Residential (non-hospital)	10,134	9,219	8,947	9,302	9,738	11.9	10.7	10.6	11.4	11.8
Hospital inpatient	884	762	756	1,258	1,107	1.0	0.9	0.9	1.5	1.3
Clients under age 18 in facilities with special programs or groups for adolescents	70,275	71,613	68,448	66,064	65,918	82.2	82.8	81.2	80.7	79.9
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.
² Excludes clients in facilities that did not respond to the question about clients under age 18 (in 2007, 550 total clients reported by 34 facilities; in 2008, 911 total clients reported by 9 facilities; in 2009, 346 total clients reported by 5 facilities; in 2010, all facilities responded to the question about clients under 18; and in 2011, 1,417 total clients reported by 9 facilities).
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.