Study subjects had 6,633 inpatient episodes. Readmission occurred for 84 percent of the episodes, 23 percent of them within 30 days after initial discharge. Variables associated with an increased readmission risk in the first 30 days were shorter hospital stay, shorter time on medication before discharge, greater prehospitalization use of acute care, serious general medical comorbidity, and prior substance abuse treatment.
“This finding suggests that some patients may have been discharged before they were sufficiently stabilized,” the researchers said. “Patients with shorter stays and those not sufficiently stabilized on their medication should receive more vigorous discharge planning and follow-up care to ensure smoother transition to treatment in the community.”