Cesarean section and rate of subsequent stillbirth, miscarriage, or ectopic pregnancy—3-y follow-up.

Women were followed up for a maximum of 3 y from the date of the first live birth until the subsequent event to test for informative censoring due to live birth. Cohort 1982–2010 (n = 832,996 women).aNumber of events of the outcome of interest for each mode of delivery in parentheses.bModel 1: adjusted for maternal age; maternal origin; previous stillbirth, miscarriage, or ectopic pregnancy; mother's marital status; birth year; and measures of socio-economic status including mother's educational attainment and mother's and father's gross income.cModel 2: adjusted for Model 1 plus medical complications in the first live birth including delivery type (singleton versus twins or more), diabetes, gestational diabetes, placental abruption, placenta praevia, and hypertensive disorders (including eclampsia and preeclampsia).dModel 3: adjusted for Model 2 plus gestational age and birth weight.*Where the number of events was less than ten for maternally requested cesarean, these were combined with the elective cesarean group for analyses.