Key Message
This cross-sectional study examines the prevalence and key predictors of alcohol and cannabis co-use among 9263 Filipino adolescents using data from the 2019 Global School-based Student Health Survey. Significant predictors of co-use include male sex, lower academic grade, poor sleep quality, history of attempted suicide, physical inactivity, non-attendance in physical education classes, infrequent parental checks, and low parental awareness of adolescents' activities, with a weighted co-use prevalence of 4.2%. The study underscores the need for comprehensive interventions addressing these factors to reduce substance co-use among Filipino adolescents.
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