Demographic and pregnancy characteristics for the cases and controls in the Danish and Norwegian GWAS.

DNBC – Danish National Birth Cohort; MoBa – Norwegian Mother and Child Cohort Study.For continuous variables, median is reported with the range in brackets.*16 missing for cases and 4 missing for controls in DNBC.**Previous PTD based on data for multipara only, 4 missing for cases and 4 missing for controls in DNBC.***13 missing for cases and 1 missing for controls in DNBC.