BACKGROUND: Immigration is a factor with effects on the course of substance abuse and treatment response, however there is little consistent data regarding outcome of inpatient opiate detoxification treatment in immigrants as compared to native patients. METHODS: Patient history and the success of current detoxification treatment were systematically documented in a multicenter study in Germany which included 10 psychiatric hospitals with specialized detoxification wards. RESULTS: Out of 893 patients, 240 (27%) had a migration history. We further analyzed the three main groups (German, n=653; Turkish, n=58; Russian origin, n=103). There were significant differences between groups regarding sociodemographic data, drug history, treatment experience and success of current treatment. However, considering the younger age of patients with Russian origin, analysis of younger patients (
