The Research Outcome Study in Ireland (ROSIE) is the first national, prospective, longitudinal, multi-site drug treatment outcome study in the country. The National Advisory Committee on Drugs (NACD) commissioned this research in 2002 as required by the National Drugs Strategy Action 99. The aim of the Study is to recruit and follow opiate users entering treatment over a period of time documenting the changes observed.

Detoxification cohort: follow-up rates:
Of the 81 people recruited within the detoxification modality, 93% (n=75) were located, and 77% (n=62) successfully completed a 1-year interview. One individual died within the follow-up period, four people withdrew from the study, eight people were located but not successfully interviewed, and an additional six participants were not located. These 19 people ‘lost’ to follow-up were excluded from the comparative analysis to allow for valid assessment across the two time periods.This is the second paper in the ROSIE Findings series and it provides a snapshot of the outcomes for people in the detoxification modality one year after treatment intake.