Evaluating client functioning in a harm reduction program in South Africa: insights from a tool derived from the International Classification of Functioning, Disability and Health.

The survey was cross-sectional and self-report, so it cannot show whether COSUP or any service caused the reported functioning. Three of the 17 sites did not return questionnaires in time, and the exact response rate could not be determined. There were missing data at different questions, so some analyses used fewer than 450 clients. Almost 40% of education data were missing, so the reported education result may not represent the whole group. Clients included both new and returning clients, and length of time in the program varied, so the results are a snapshot rather than a change over time. The tool uses an ordinal scale and some response categories were collapsed during analysis, which limits how the scores can be interpreted.

The authors declared that no financial support was received for the research, authorship, or publication. COSUP is a collaboration between the City of Tshwane Metropolitan Municipality and the University of Pretoria's Community Oriented Primary Care Research Unit.

Do not read the positive COSUP reports as proof that the program improves functioning. This was a cross-sectional self-report survey with no comparison group and no follow-up, and clients received multiple supports together, including needle and syringe services, opioid agonist maintenance therapy, counselling, psychosocial group interventions, and skills development. The contribution of any single component cannot be separated.