Cooking fuel and the risk of pregnancy-induced hypertension in Lanzhou, China: A birth cohort study

Background The relationship between the solid fuels and occurrence of pregnancy-induced hypertension (PIH) is inconclusive. Methods A birth cohort study 10,452 pregnant women without chronic was conducted from 2010 to 2012 at Gansu Provincial Maternity Child Care Hospital in Lanzhou, China. Multivariable logistic regression models were used assess relationship. Results Compared using gas as cooking fuel, coal (OR=2.55, 95% CI: 1.85-3.51)and biomass (OR=3.58, 2.29-5.60) associated with an increased risk PIH, gestational (biomass: OR=3.38, 1.68-6.80), preeclampsia (coal: OR=2.89, 1.98-4.21; biomass: 1.95-5.84).The fuel PIH modified by maternal age(p<0.0001), pre-pregnancy BMI (p<0.0001), weigh gain(p<0.0001), parity(p<0.0001), multiple (p<0.0001). Conclusions During pregnancy, exposure or preeclampsia.