Table 3.
Total weight gain during pregnancy (mean) and 95% confidence intervals according to the pre-pregnancy body mass index
| BMI classification + | n | Mean ± SD in kg | Mean ± SD in lbs | 95% Cl in kg (lbs) |
|---|---|---|---|---|
| underweight (BMI < 18.5 kg/m2) |
478 |
13.6 ± 5.0 |
30.0 ± 11.0 |
13.1-14.1 (28.9-31.1) |
| normal-weight (BMI 18.5 – 24.9 kg/m2) |
6058 |
13.8 ± 5.2 |
30.4 ± 11.5 |
13.7-13.9 (30.2-30.6) |
| overweight (BMI 25.0 – 29.9 kg/m2) |
1740 |
12.6 ± 5.9 |
27.8 ± 13.0 |
12.3-12.8 (27.1-28.2) |
| obese (BMI > 30 kg/m2) | 917 | 10.7 ± 6.9 | 23.6 ± 15.2 | 10.3-11.0 (22.7-24.3) |
+Body Mass Index classification according to WHO guidelines; BMI = Body Mass Index; SD = standard deviation; kg = kilogram; lbs = pounds; 95% Cl: 95% confidence intervals in kilogram and (pound).