Risk factors for early onset severe pre-eclampsia and eclampsia among north Indian women

A case-control study was conducted in India between April 2007 and January 2008, to identify the clinical and historical risk factors associated with early onset pre-eclampsia/eclampsia (PE-E) in women attending a tertiary care hospital in North India. The study group comprised 100 women with early onset severe pre-eclampsia/eclampsia (<= 34 weeks) and a control group of 100 women with mild non-proteinuric hypertension (>34 weeks). A detailed history including past, personal and family history, pregnancy outcome including delivery details and perinatal outcome and available investigations were recorded in a pre-designed proforma. Multiple logistic regression analysis was used to determine the risk factors for pre-eclampsia. The risk factors that were associated with increased risk of early onset severe PE-E were: history of PE-E in a previous pregnancy (adjusted odds ratio, aOR 71.40); exposure to passive smoking (aOR 16.40); inadequate antenatal supervision (aOR 15.21); family history of hypertension in one or more 1st-degree relative (aOR 8.92); living in a joint family (aOR 6.93); overweight (>120% to 150% of pre-pregnancy ideal body weight, aOR 4.65) and lower socioeconomic class (Kuppuswamy's class III-V) (aOR 3.00). Based on the above risk factors, a risk model can be constituted as practised in other places and implemented in the primary preventive measure of early-onset severe pre-eclampsia among the North Indian women attending this tertiary care hospital.