Why are data for only certain cities and counties provided on PeriStats?


In an effort to provide more information by geographic area, detailed data for certain cities and counties are provided on PeriStats. Specific criteria, including a minimum number of live births in a given year, were used to ensure that there were adequate counts of events to calculate a majority of the rates and percentages using National Center for Health Statistics data. Data from other sources used in PeriStats are not generally available at the city and county level.
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