Table 3

Effect of pre-pregnancy BMI on the risk for developing gestational hypertension and pre-eclampsia

OR95% CIp Value
Gestational hypertension
Crude model1.071.04 to 1.10<0.01
Adjusted model*1.061.03 to 1.09<0.01
Explanatory model†1.101.05 to 1.14<0.01
Pre-eclampsia
Crude model1.091.05 to 1.14<0.01
Adjusted model*1.091.04 to 1.14<0.01
Explanatory model†1.191.11 to 1.27<0.01
  • Results are expressed as OR (95% CI) for every 1 kg/m2 increase in pre-pregnancy BMI from (multiple) logistic regression.

  • *Adjusted for maternal age, parity, secondhand smoking exposure and socioeconomic status (monthly family income).

  • †As * and for total gestational weight gain (difference between maternal weight measured at the day of delivery from the pre-pregnancy weight).

  • BMI, body mass index.