Harrison H
Alaska Neonatology Associates, Anchorage 99508.
Alaska Med. 1990 Jul-Sep;32(3):95-100.
Several determinants of Alaska postneonatal mortality rate were examined to determine whether very low birth weight (less than 1500 g) and low birth weight (1500-2499 g) surviving neonates contributed to the lack of improvement in postneonatal mortality rate. For an eight year period (1977 through 1984), all infant deaths (n = 1020) of the 82,301 resident births were reviewed through vital statistics data. The infant's place of birth, ethnic group, birth weight and age at death were available. Ethnic and rural-specific postneonatal mortality rate (PNMR) significantly improved, but there was no change in birth weight distribution or birth weight-specific postneonatal mortality rate. However, surviving very low birth weight infant proportion of postneonatal mortality has increased from 5% to 8.2% and low birth weight proportion has remained unchanged (15.6%). These proportions were not offset by the decline in normal birth weight (greater than 2500 g) postneonatal mortality rate. This trend suggests that infants born weighing less than 2500 g have slowed the decline of the postneonatal mortality rate.
研究了阿拉斯加新生儿后期死亡率的几个决定因素，以确定极低出生体重（低于1500克）和低出生体重（1500 - 2499克）的存活新生儿是否导致了新生儿后期死亡率缺乏改善。在八年期间（1977年至1984年），通过生命统计数据对82301例常住出生中的所有婴儿死亡（n = 1020）进行了审查。可获得婴儿的出生地点、种族、出生体重和死亡年龄。特定种族和农村的新生儿后期死亡率（PNMR）显著改善，但出生体重分布或特定出生体重的新生儿后期死亡率没有变化。然而，极低出生体重存活婴儿在新生儿后期死亡率中的比例从5%增加到了8.2%，低出生体重比例保持不变（15.6%）。这些比例并未被正常出生体重（大于2500克）的新生儿后期死亡率下降所抵消。这一趋势表明，出生体重低于2500克的婴儿减缓了新生儿后期死亡率的下降。
