Singletons & Multiples
Pregnancy outcomes can vary for singleton and multiple births. Multiple births include twins, triplets and higher order births, and outcomes can vary among these groups as well.
| ||In the United States in 2014, 96.5% of all live births were singleton births and 3.5% were multiple births.|
| ||Between 2004 and 2014, the multiple birth ratio in the United States increased more than 3%.|
| ||Compared with singleton births (one baby), multiple births in the United States were about 8 times as likely to be preterm in 2014.|
| ||For more detailed data, click on the topic edit button in search tool on left side, select one of the Subtopics from drop down list under this topic. Here you'll find more graphs, maps, and tables that pertain to this topic.|
National Center for Health Statistics, final natality data.
Retrieved March 29, 2017, from www.marchofdimes.org/peristats.