Hospital intake diagnostic and discharge data were collected, and patient and parent questionnaires were used to gather social history and child development information. A follow-up study was completed for 61 percent of the 96 patients, age range 10-23 years. Few etiological differences were found between white and American Indian youth, but the Indian youth were overrepresented by tenfold. According to self-reports, only one patient used alcohol only. The most popular nonalcoholic drugs were hashish, speed, and LSD. At 6 months, 27 percent of the white patients had used no drugs for 7 months, but not one Indian reported no drug use. However, the use of alcohol other than beer was much reduced for those continuing to use alcohol, and the use of all other drugs including hashish was significantly less. Sixty percent of the study participants indicated that they were better able to avoid the use of alcohol and drugs than before treatment, and a significant number also reported feeling better about themselves and their ability to cope with problems. 8 tables and 32 references (Author abstract modified)