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.
Last updated:
January 2022
Search PubMed literature for recent research articles
on
Singletons & Multiples
Data for
In Iowa in 2021, 96.4% of all live births were singleton births and 3.6% were multiple births.
Between 2011 and 2021, the multiple birth ratio in Iowa increased more than 5%.
Compared with singleton births (one baby), multiple births in Iowa were about 7 times as likely to be preterm in 2022.
Sources: National Center for Health Statistics, final natality data. Retrieved March 19, 2024, from www.marchofdimes.org/peristats.
In Iowa in 2021, 96.4% of all live births were singleton deliveries.
In Iowa during 2019-2021 (average), 98.7% of live births to women under the age of 20 were singletons, compared to 96.9% to women ages 20-29, 95.8% to women ages 30-39 and 96.0% to women ages 40 and older.