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California Department of Public Health

The California Department of Public Health (CDPH) works to protect the public's health in the Golden State and helps shape positive health outcomes for individuals, families and communities. The Department's programs and services, implemented in collaboration with local health departments and state, federal and private partners, touch the lives of every Californian and visitor to the state 24 hours a day, 7 days a week.


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Preterm and Very Preterm Live Births

This dataset contains two files with percent preterm and very preterm live births 1) maternal county of residence 2) by race/ethnic group of mother. Preterm births are all live births less than 37 weeks of gestation. Very preterm births are all live births less than 32 weeks of gestation. Important growth and development occur throughout pregnancy, especially in the final months and weeks. There is a higher risk of serious disability or death the earlier a baby is born. Gestational age is based on obstetric estimate at delivery (OE). Data includes births with gestational age of 17-47 weeks. Data should not be compared to other data where gestational age is based on the date of last normal menses (LMP) and not OE. The National Center for Health Statistics recently transitioned to using an OE-based gestational age measure due to increasing evidence of its greater validity compared with the LMP-based measure. (

Source: CHHS Portal
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Harvest Source TitleCHHS Portal
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Last Harvest PerformedThu, 04/25/2019 - 06:29