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Preterm births in Idaho

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Definition and Source



Preterm births: babies born with a gestational age of less than 37 completed weeks. Birth certificates that did not report gestational age were not included in this tabulation.
The primary measure used to determine the gestation age of the newborn is the interval between the first day of mother's last normal menstrual period (LMP) and the date of birth. If LMP is less than 17 completed weeks, greater than 47 completed weeks, not stated, or implausible with birth weight, then the obstetric estimate of completed weeks gestation is used. Gestational age based on LMP and obstetric estimate are comparable with data based on LMP and obstetric estimate only.

Data Source

Idaho Department of Health and Welfare, Public Records Request.


Updated October 2023.

Last Updated

October 2023