Mentally ill chemical abusers discharged from VA inpatient treatment: 1976-1988.

Discharge abstracts were analyzed for all patients discharged from Department of Veterans Affairs (VA) medical centers with a primary non-substance abuse psychiatric diagnosis over a twelve year period (1976 to 1988). Patients were identified as Mentally Ill Chemical Abusers (MICAs) if they had a primary mental illness diagnosis and either a secondary substance abuse diagnosis or an admission for substance abuse treatment during the same fiscal year. The percentage of MICAs doubled, from 22.6% to 43.6%, during these twelve years. In 1988, MICAs were younger and more likely to be minorities than other VA psychiatric patients, and they spent only half as many days in the hospital per year.