Spontaneous reporting of adverse drug reactions (ADRs) is an essential component of pharmacovigilance, but the safe and appropriate use of drugs is limited by under-reporting of ADRs. Knowledge of pharmacovigilance could form the basis for interventions aimed at improving reporting rates.

The clients (17%) who left early had a trend toward being female, not being from the Caribbean, and were significantly less likely to use alcohol, more likely to use opioids and more likely to use prescribed mental health medications. The Caribbean subset of clients leaving early had a trend toward being younger and having prior treatment. They were significantly more likely to be female, with fewer years of drug use, and were more likely to be taking prescribed mental health medications.