Preterm births by county in Illinois

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Definitions: "Preterm" refers to babies born with a gestational period of less than 37 completed weeks.

Data represent two-year proportions.


"*" indicates that standards of reliability were not met.  In this case, IDPH suppresses estimates for which the numerator is less than 10.

Data Source: For data from 2009 onward: Illinois Department of Public Health, Birth Characteristics by Resident County, available at: http://www.dph.illinois.gov/data-statistics/vital-statistics/birth-statistics/more-statistics