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 Arizona in 2021, 97.0% of all live births were singleton births and 3.0% were multiple births.
Between 2011 and 2021, the multiple birth ratio in Arizona increased 5%.
Compared with singleton births (one baby), multiple births in Arizona 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 Arizona in 2021, 97.0% of all live births were singleton births and 3.0% were multiple births.
Between 2011 and 2021, the percent of live births that were singleton in Arizona declined slightly.