Maternal and neonatal characteristics, and associations with overall birth defects, according to the EUROCAT classification (French Perinatal Cohort [ANRS CO1/CO11]).

aTotal patients in each category.bNumber of birth defects among the N patients of the category.cχ2 test or Fisher's exact test; missing data excluded.dAssociation with mode of delivery, premature delivery and low birth weight could be a consequence but not a risk factor for birth defects, and thus were not included in the multivariate analysis.