| Maternal age is a risk factor for preterm birth, with higher preterm birth rates found among the youngest and oldest mothers in the U.S. | | During 2005-2007 (average) in Atlanta, late preterm birth rates were highest for women ages 40 and older (12.9%), followed by women under age 20 (12.5%), ages 20-29 (11.9%) and ages 30-39 (10.3%). | | Of all infants born during 2005-2007 (average), 11.7% were to mothers under the age of 20, 50.3% were to mothers ages 20-29 years, 35.2% were to mothers ages 30-39 years, and 2.8% were to mothers ages 40 and older. |
Source
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National Center for Health Statistics, final natality data.
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Retrieved June 19, 2013, from www.marchofdimes.com/peristats.
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