Prior research suggests that brief interventions (BIs) for alcohol and other drug use may vary in effectiveness across patient sociodemographic factors. The objective of this individual participant data (IPD) meta-analysis was to explore for whom BIs delivered in general healthcare settings are more or less effective. We examined variability in BI…

The use of frequency-based criteria to detect harmful substance use in adolescents is rare despite its potential to identify young people at risk. We compared high school students who use high amounts of substances to students with lower levels (or nil) of use across health and well-being indicators to explore the feasibility of this kind of…