title: Geographic distribution of anencephaly in the United States.
abstract: The distribution of anencephaly mortality rates was calculated by county for the continental United States. The average annual anencephaly mortality rate for all races and both sexes, based on 1968-1978 data for the population under 5 years of age, was 5.1 per 100,000 per year. The average annual anencephaly death risk for 1970-1975 was 25.4 per 100,000 live births per year. The distribution of anencephaly mortality was confirmed by comparing maps of mortality data and annual death risk for the period 1970-1975.
mesh_terms: D000757:Anencephaly / Q000453:epidemiology* / Q000401:mortality; D006801:Humans; D014481:United States