“…The term 'special population' originated in a National Institute on Drug Abuse report on adolescents (1977), and has since evolved in the substance abuse treatment field to refer to groups of clients with unique treatment needs (Hegamin et al, 2002;Polinsky, Hser, & Grella, 1998), including women (Hien & Levin, 1994;Reed, 1985;Zweben, 2003), the dually-diagnosed (Bromet & Schulberg, 1989;CSAT, 1994;Polinsky, Hser, & Grella, 1998), gays and lesbians (CSAT, 2001;Craft & Mulvey, 2001;Freese, Obert, Dickow, Cohen, & Lord, 2000), and persons with HIV/AIDs (Polinsky et al, 1998;RachBeisel, Scott, & Dixon, 1999), among others. Approximately 90% of all SAT facilities in the USA offered at least one program designed specifically for these special populations in 2000 (U.S. Department of Health and Human Services, 2002b).…”