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Birthweight and Gestation

Data are for the U.S.

  • Number of babies born low birthweight (less than 2500 grams): 321,839
  • Percent born low birthweight: 8.17%
  • Percent born very low birthweight: 1.40%
  • Number of preterm births: 388,218
  • Percent born preterm: 9.85%

Source: Births: Final Data for 2016, tables 13, I-19, I-21 [PDF – 1.1 MB]

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