Figure 2. The effect of energy reduction and calcium supplementation on BMI adjusted for age, gender, smoking, drinking, and regular exercise. (A) Comparison of BMI changes between ERGs and NERGs. (B) Comparison of BMI changes between CSGs and NCSGs. (C) Comparison of BMI changes among CG, ERG, CSG, and ER-CSG. Note: P-value for the difference in the joint effect of intervention and time.