Elsevier, Drug and Alcohol Dependence, (151), p. 76-83, 2015
DOI: 10.1016/j.drugalcdep.2015.03.005
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•We examine the pattern of ceasing and relapsing during the entire injecting career.•Opiate substitution treatment (OST) was associated with reduced time to cessation.•OST was associated with lower risk of relapse, but not statistically significant.•Women and older people who inject drugs (PWID) were less likely to relapse (had lower hazard of relapse).•With each relapse, time to next cessation event is shortened.