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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).