diversity of clients is shown in Table E-6 which summarizes selected demographic characteristics of clients in treatment on October 1, 1996. Over two-thirds of those in treatment were male (68 percent). The majority of clients were white of non-Hispanic origin (57 percent); however, a substantial number of clients were of minority origin (24 percent black, nonHispanic; 12 percent Hispanic, and 3 percent Native American).

The age distribution of clients in treatment shows a distinctly youthful population. More than one in five clients are less than 25 years old. Well over one-half of clients are less than 35 and 80 percent of clients are under 45 years of age. Alcohol remains the primary drug of abuse for the largest number of clients in treatment (43 percent). As expected, the use of heroin, cocaine, and marijuana, as primary drugs of abuse, is significant. The number of heroin clients has been increasing relative to other illicit drugs, consistent with trends of drug abuse in this country.

A variety of services are offered in conjunction with substance abuse treatment reflecting the diverse needs of the treatment population. Table E-7