Among 222,137 women who had their first delivery in
2006, 6,135 women with preeclampsia were identified
(preeclampsia risk in the first pregnancy, 2.76%). Among
222,137 women, 127,723 women had their second delivery between 2007 and 2010, and the proportion of
women with 2 pregnancies was 50.4% and 57.7% of
women with and without preeclampsia in their first
pregnancy, respectively. A total of 1,473 women with
preeclampsia were identified (preeclampsia risk in the
second pregnancy, 1.15%). The preeclampsia risk in any
pregnancy was 2.17%. During the second pregnancy, the
preeclampsia risk was 13.30% for women who developed
preeclampsia in their first pregnancy and 0.85% for those
who did not