maternal birth weight and cesarean delivery in four race-ethnic groups

Maternal birth data were linked to a Washington State database, including the birth certificate of 18,905 first-born singleton infants. Among non- Hispanic white subjects, maternal birth weight of 2500 g to 3999 g was associated with a 20.9% risk of cesarean delivery, compared with 24.5%for a maternal birth weight 4000 g. Similar patterns of risks were noted among Hispanic and Native American subjects, although the associations did not reach statistical significance. Risk of cesarean delivery was not associated with maternal birth weight among African American subjects.