ROSIE Findings 4: summary of 1-year outcomes: methadone modality.

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. Methadone cohort: follow-up rates: Of the 215 people recruited within the methadone modality, 91% (n=196) were located and 78% (n=167) successfully completed a 1-year interview. Ten individuals withdrew from the study, 19 people were located but not successfully interviewed, and an additional 19 participants were not located. These 48 people ‘lost’ to follow-up were excluded from the comparative analysis to allow for valid assessment across the two time periods. However, it is worth noting that 30 of these participants were known to be still in their index treatment at 1-year. This is the fourth paper in the ROSIE Findings series and it provides a snapshot of the outcomes for people in the methadone modality one year after treatment intake