Mapping Geographic Variation in Infant Mortality and Related Black–White Disparities in the US

Background: In the US, black infants remain more than twice as likely as white infants to die in the first year of life. Previous studies of geographic variation in infant mortality disparities have been limited to large metropolitan areas where stable estimates of infant mortality rates by race can be determined, leaving much of the US unexplored. Methods: The objective of this analysis was to describe geographic variation in county-level...