[Maintaining opioid abstinence long after inpatient treatment with opioid substitution in an addictology hospital unit].

Objectives: Assess the effectiveness of hospital detoxification of opiate substitution treatment (OST) in patients who failed to withdraw as outpatients.

Methods: Retrospective study, conducted among patients admitted for withdrawal of OST in an addiction unit between 2005 and 2011. Referent physicians were interviewed about outcomes at M2, M3, M6 and M12.