QuickStats: Changes* in Late Preterm Birth Rates, by State — National Vital Statistics System, United States, 2014 and 2016

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The figure above is a map of the United States showing that increases in late preterm birth rates occurred in 24 states and the District of Columbia during 2014–2016.

* Increases and declines; significant at p<0.05.

Late preterm birth rate is the number of births delivered at 34 to 36 completed weeks of gestation per 100 total births.

The late preterm birth (34 to 36 weeks of gestation) rate rose 4.0% in the United States, from 6.82% in 2014 to 7.09% in 2016. Increases in late preterm birth rates occurred in 24 states and the District of Columbia during 2014–2016. Increases in an additional 23 states were not statistically significant. Nonsignificant declines in late preterm births were observed in three states.

Source: National Vital Statistics System, Natality, 2014 and 2016. https://www.cdc.gov/nchs/data/nvsr/nvsr64/nvsr64_12.pdfpdf icon and https://www.cdc.gov/nchs/data/nvsr/nvsr67/nvsr67_01.pdfpdf icon.

Reported by: Joyce A. Martin, MPH, jamartin@cdc.gov, 301-458-4362; Michelle J.K. Osterman, MHS.


Suggested citation for this article: QuickStats: Changes in Late Preterm Birth Rates, by State — National Vital Statistics System, United States, 2014 and 2016. MMWR Morb Mortal Wkly Rep 2018;67:696. DOI: http://dx.doi.org/10.15585/mmwr.mm6724a7external icon.

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