| http://www.w3.org/ns/prov#value | - Women other than non-Hispanic white or African American were excluded, because they comprised less than 3% of all live births in Missouri during the study period.CovariatesThe following covariates were extracted from the birth certificate: race/ethnicity (non-Hispanic black or non-Hispanic white), maternal education level (recorded as age appropriate based on the number of years of formal educatio
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