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Table 3 Total weight gain during pregnancy (mean) and 95% confidence intervals according to the pre-pregnancy body mass index

From: Secular trends in pregnancy weight gain in German women and their influences on foetal outcome: a hospital-based study

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)

  1. +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).