any time from 1^st day of last menstrual period (LMP) to index date (for cases this is the date of pre-eclampsia, for controls this is the date they reached the same gestational age as their matched case at the case’s index date).

ORs adjusted for maternal age; pre-gestational hypertension, diabetes and renal disease; and multifetal gestation. In addition, ORs for UTI and RTI are mutually adjusted for.