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 2012, 1 in 17 babies (6.0% of live births) was low birthweight in Seattle.|
| ||In 2012, the low birthweight rate in Seattle (6.0%) 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.|
| ||Native American infants (14.4%) were about 3 times as likely as Hispanic infants (5.3%) to be born low birthweight during 2010-2012 (average)|
| ||Compared with singleton births, multiple births in Seattle were about 12 times as likely to be low birthweight in 2012.|
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National Center for Health Statistics, final natality data.
Retrieved January 30, 2015, from www.marchofdimes.org/peristats.