Mediation model on adolescent-reported parental support and MVPA via self-efficacy. All path coefficients are unstandardized estimates, accounting for clustering within schools. Probit model was conducted for self-efficacy in relation to parental support. **ps < 0.01. This model accounts for 17% of the variance of MVPA and 17% for self-efficacy. Covariates (age in years, poverty ratio, caregiver's education, and adolescent BMI z-score) were included. The indirect effect via self-efficacy is estimated as 0.17 (SE = 0.06,
p
< 0.001). Ninety-five percent bootstrapped confidence interval for the indirect effect (0.05, 0.29). The mediation model accounts for clustering within schools.