Table 3.3
Clients in treatment by substance abuse problem treated: 1998-20041
Number and percent distribution
Substance abuse problem Number of clients2 Percent distribution
1998 2000 2002 2003 2004 1998 2000 2002 2003 2004
Total 1,038,378 984,296 1,123,239 1,084,116 1,066,351 100.0 100.0 100.0 100.0 100.0
Clients with alcohol abuse only   246,726 222,193   237,302   219,453   210,696  23.8  22.6  21.1  20.2  19.8
Clients with both alcohol and drug abuse   512,676 475,095   539,419   508,300   493,552  49.4  48.3  48.0  46.9  46.3
Clients with drug abuse only   278,976 287,008   346,518   356,363   362,103  26.9  29.2  30.8  32.9  34.0
1 Survey reference dates were: Oct. 1, 1998-2000, March 29, 2002, and March 31, 2003-2004. See Appendix C for changes in the survey base, methods, and instruments that affect analysis of trends over time. 
2 Tabulations exclude clients in facilities that did not respond to this question: in 2000, 16,591 clients reported by 354 facilities; in 2002, 13,048 clients reported by 276 facilities; in 2003, 8,430 clients reported by 217 facilities; in 2004, 5,900 clients reported by 241 facilities.
SOURCE: Office of Applied Studies, Substance Abuse and Mental Health Services Administration, Uniform Facility Data Set (UFDS), 1998; National Survey of Substance Abuse Treatment Services (N-SSATS), 2000, 2002-2004. No client data were collected in 1999, and no survey was conducted in 2001.