Low birthweight is defined as less than 2500 grams or 5 1/2 pounds. It is also common to classify low birthweight births into moderately low birthweight (1500-2499 grams) and very low birthweight (less than 1500 grams or 3 1/3 pounds). These classifications are useful because they often correspond to clinical characteristics - increasing morbidities or illnesses with decreasing birthweight. Babies born too small are often born too soon. While the causes of low birthweight and preterm birth may be different in some cases, there is significant overlap within these populations of infants.
| ||In 2013, 1 in 12 babies (8.4% of live births) was low birthweight in New York City.|
| ||In 2013, the low birthweight rate in New York City (8.4%) had not met the Healthy People 2020 objective of no more than 7.8% of live births, set by the U.S. Department of Health and Human Services.|
| ||Black infants (12.2%) were about 2 times as likely as white infants (6.4%) to be born low birthweight during 2011-2013 (average)|
| ||Compared with singleton births, multiple births in New York City were about 9 times as likely to be low birthweight in 2013.|
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National Center for Health Statistics, final natality data.
Retrieved July 29, 2016, from www.marchofdimes.org/peristats.