Infant mortality is defined as death occurring during the first year of life and is an important summary reflecting social, political, health care delivery and medical outcomes in a geographic area. Infant deaths can be further classified into neonatal (0-27 days) and postneonatal (28 days-under 1 year) periods. Neonatal mortality is typically associated with events surrounding the prenatal period and the delivery, whereas postneonatal deaths are more likely to be associated with conditions or events that arise after the delivery and may reflect environmental factors. Other measures of mortality associated with infant health provided on PeriStats include late fetal mortality (28 or more weeks of gestation) and perinatal mortality (fetal deaths of 28 or more weeks gestation and infant deaths in the first 7 days of life). PeriStats also provides data on maternal mortality, reflecting deaths occurring during pregnancy, childbirth or the postpartum period.
| ||In Portland in 2010, 50 infants died before reaching their first birthday, an infant mortality rate of 5.9 per 1,000 live births.|
| ||Between 2000 and 2010, the infant mortality rate in Portland was unchanged.|
| ||In 2010, 66.1% of infant deaths occurred in the neonatal period, and 33.9% occurred in the postneonatal period.|
| ||Some of the leading causes of infant death in the United States include the following: birth defects; prematurity/low birthweight; sudden infant death syndrome; maternal complications of pregnancy and respiratory distress syndrome.|
| ||In Portland in 2006, the rate of perinatal mortality was 6.0 per 1,000 live births and fetal deaths.|
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National Center for Health Statistics, final mortality data, 1990-1994 and period linked birth/infant death data, 1995-present.
Retrieved April 19, 2015, from www.marchofdimes.org/peristats.