Fig. 1

BMI distribution at baseline and at 6-, 12- and 24-months PO; healthy weight BMI 18.5–24.9 kg/m2; overweight BMI 25.0–29.9 kg/m2; class I obesity BMI 30.0–34.9 kg/m2; class II obesity BMI 35.0–39.9 kg/m2; class III obesity BMI ≥ 40.0 kg/m2.
BMI distribution at baseline and at 6-, 12- and 24-months PO; healthy weight BMI 18.5–24.9 kg/m2; overweight BMI 25.0–29.9 kg/m2; class I obesity BMI 30.0–34.9 kg/m2; class II obesity BMI 35.0–39.9 kg/m2; class III obesity BMI ≥ 40.0 kg/m2.