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Birthweight and Gestation

Data are for the U.S.

  • Number of babies born low birthweight (less than 2500 grams): 315,709
  • Percent born low birthweight: 8.0%
  • Percent born very low birthweight: 1.4%
  • Number of preterm births: 455,918
  • Percent born preterm: 11.6%

Source: Births: Final Data for 2012, table 25 [PDF - 2.2 MB]

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