Definition of Rate, neonatal mortality
Rate, neonatal mortality: The number of children dying under 28 days of age divided by the number of live births that year. The neonatal mortality rate in the United States, which was 8.4 per 1,000 live births in 1980, declined to 5.8 per 1,000 live births in 1990.
Last Editorial Review: 6/14/2012
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