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Location: Mississippi
Topic: Late preterm by maternal age
Format: Bar Graph
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Late preterm by maternal age: Mississippi, 2012-2014 Average

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• 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 2012-2014 (average) in Mississippi, late preterm birth rates were highest for women ages 40 and older (13.9%), followed by women ages 30-39 (10.2%), ages 20-29 (9.1%) and under age 20 (8.9%). 
• Of all infants born during 2012-2014 (average), 11.4% were to mothers under the age of 20, 61.5% were to mothers ages 20-29 years, 25.6% were to mothers ages 30-39 years, and 1.5% were to mothers ages 40 and older. 


  • Late preterm is between 34 and 36 weeks gestation.


  • National Center for Health Statistics, final natality data.
  • Retrieved October 26, 2016, from www.marchofdimes.org/peristats.