Factors affecting detoxification readmission: analysis of public sector data from three states.

The objective of this study was to understand the rate of detoxification readmissions and the factors associated with readmission within a public sector population. The study sample was drawn from an integrated database that includes Medicaid and state mental health and substance abuse agency data from three states (Delaware, Oklahoma, and Washington) for 1996-1998. Clients with at least one state agency-sponsored detoxification event in 1996 or 1997 were included in the study. Twenty-seven percent of the sample was readmitted for detoxification within 1 year of their index detoxification. Clients who received two or more substance-abuse-related services within 30 days of their index detoxification were less likely to be readmitted and had a longer time until their second detoxification admission. Detoxification readmission is common in the public sector. Engaging patients in treatment following detoxification may reduce readmission rates and time to readmission.