Rate of SMO and estimated risk of SMO for eclampsia according to maternal characteristics, obstetric background and medical history.

SMO = severe maternal outcome (maternal near miss plus maternal death), PR: prevalence ratio adjusted by cluster effect, CI: confidence interval.Missing data for: (a) 140 cases, (b) 90 cases, (c) 144 cases, (d) 9 cases, (e) 87 cases.Values in bold mean they are significant.