| ||In 2010, there were 339,189 late preterm births in the United States, representing 8.5% of live births. |
| ||Between 2000 and 2010, the rate of infants born late preterm in the United States increased nearly 4%. |
National Center for Health Statistics, final natality data.
Retrieved June 19, 2013, from www.marchofdimes.com/peristats.