Table 3.3
Clients in treatment, by substance abuse problem and diagnosed co-occurring substance abuse and mental health disorders: 2004-20081
Number and percent
Substance abuse problem and diagnosed co-occurring
substance abuse and mental health disorders
Number of clients Percent distribution
2004 2005 2006 2007 2008 2004 2005 2006 2007 2008
Total2 1,072,251 1,081,049 1,130,881 1,135,425 1,192,490  
Substance abuse problem  
Clients with both alcohol and drug abuse   493,552   500,234   521,067   509,920   545,330  46.0  46.3  46.1  44.9  45.7
Clients with drug abuse only   362,103   366,640   394,295   412,400   421,583  33.8  33.9  34.9  36.3  35.4
Clients with alcohol abuse only   210,696   199,986   207,194   211,094   222,389  19.6  18.5  18.3  18.6  18.6
Diagnosed co-occurring substance abuse and mental health disorders n/a n/a n/a   416,260   462,260 n/a n/a n/a  36.7  38.8
1 Survey reference dates were: March 31, 2004-2006, March 30, 2007, and March 31, 2008. See Appendix A for changes in the survey base, methods, and instruments that affect analysis of trends over time. 
2 Totals include clients in facilities that did not respond to the substance abuse problem question (in 2004, 5,900 clients reported by 242 facilities; in 2005, 14,189 clients reported by 306 facilities; in 2006, 8,325 clients reported by 278 facilities; in 2007, 2,011 clients reported by 223 facilities; and in 2008, 3,188 clients reported by 188 facilities) and/or the co-occurring disorders question (in 2007, 17,399 clients reported by 338 facilities; and in 2008, 15,462 clients reported by 263 facilities).
n/a  Not collected until 2007.
SOURCE: Office of Applied Studies, Substance Abuse and Mental Health Services Administration, National Survey of Substance Abuse Treatment Services (N-SSATS), 2004-2008. 

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