The survey gathered information on the treatment method, the setting, age, primary payer, billed charges, length of stay, diagnosis, and treatment category. Data were provided on must over 11,000 individuals from 230 facilities, which represented 39 percent of member facilities. Results revealed that 92 percent of the individuals received inpatient treatment, 5.5 percent were treated on an outpatient basis, and 2.3 percent were treated in a combination of both settings. The average charge per admission for those provided inpatient was $6,046; charges ranged from zero to $67,000. The length of stay ranged from zero to 197 days; the average was 23 days. Lowest charges and lengths of stay were for those with drug dependence with detoxification. Adolescents, who included all those under age 20, represented 13 percent of the responses. The length of stay was 30.2 days for adolescents, compared to 22.1 days for adults. Federal and State programs were the primary payers for most of the individuals. Findings suggested that both age and whether the treatment setting was freestanding or hospital-based seemed to be important in explaining cost differences. Tables and survey instrument