BMI before pregnancy classification (kg/m2) | Total gestational weight gain (kg) | Weight gain in the first trimester (kg) | Weekly weight gain in the second and third trimesters [kg, median (range)] |
Low body weight (<18.5) | 11.0–16.0 | ≤2 | 0.46 (0.37–0.56) |
Normal body weight (18.5- < 24.0) | 8.0–14.0 | ≤2 | 0.37 (0.26–0.48) |
Overweight (24.0- < 28.0) | 7.0–11.0 | ≤2 | 0.30 (0.22–0.37) |
Obesity (≥28.0) | ≤9 | ≤2 | ≤0.30 |