Determinants of long-term retention in opioid agonist therapy among people who inject drugs in Montreal, Canada

Author: Dragos Vlad Nanor Minoyan Stine Bordier Høj Julie Bruneau

Theme: Models of Care Year: 2021

Background: Opioid agonist therapy (OAT) is a key intervention for addressing hepatitis C virus infection in people who inject drugs (PWID). Longer-term engagement in OAT has been associated with better health and social outcomes, but there is a need to better understand factors supporting retention in treatment. We sought to identify sociodemographic characteristics, drug use patterns, and treatment factors associated with retention in OAT among active PWID. Methods: Design: Cross-sectional analysis of baseline data collected within a longitudinal cohort study of PWID in Montreal (2011-2020). Eligibility for OAT was defined by illicit opioid use or OAT receipt in the pastsix months. Measures: Retention in OAT was defined as self-reported time spent in treatment at baseline and categorized as not on OAT,

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