Fig. 4

A harmonized meta-analysis of the association between sex and physical education classes (boys vs girls) with odds ratio results adjusted by age group and food insecurity. B harmonized meta-analysis of the association between age and physical education classes (≥ 16 vs 12-13y) with odds ratio results adjusted by gender and food insecurity. C harmonized meta-analysis of the association between food insecurity and physical education classes (food insecurity vs food security) with odds ratio adjusted by gender and age group. Weights are from the random-effects analysis. OR, odds ratio. 95% CI, 95% confidence interval. PE, physical education