Preterm birth is defined as a live birth before 37 completed weeks gestation. Some other classifications of preterm births include late preterm (34-36 weeks), moderately preterm (32-36 weeks) and very preterm (<32 weeks). These classifications are useful because they often correspond to clinical characteristics - increasing morbidities or illnesses with decreasing gestational age. Babies born too soon are often born too small. While the causes of preterm birth and low birthweight may be different in some cases, there is significant overlap within these populations of infants.
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In 2021, 1 in 9 babies (11.7% of live births) was born preterm in Bronx.
The rate of preterm birth in Bronx is highest for black infants (13.0%), followed by Hispanics (10.6%), Asian/Pacific Islanders (9.5%) and Whites (7.6%).
Compared with singleton births (one baby), multiple births in Bronx were times as likely to be preterm in 2021.
Notes: Preterm is less than 37 weeks of pregnancy.
Sources: National Center for Health Statistics, final natality data. Retrieved June 7, 2023, from www.marchofdimes.org/peristats.
In 2021, there were 2,011 preterm births in Bronx, representing 11.7% of live births.