Womack Lindsay S, Rossen Lauren M, Martin Joyce A
NCHS Data Brief. 2018 Mar(306):1-8.
Low birthweight (LBW) is among the leading causes of infant death in the United States (1). LBW infants are also more likely to have health problems (2). After reaching its highest level in four decades, the LBW rate among all births declined from 2006 to 2014 (3,4), but the trend reversed in 2015 and 2016 when the LBW rate increased (4), moving further away from the Healthy People 2020 goal of reducing LBW rates to 7.8% of live births (5). This report shows trends in LBW, moderately low birthweight (MLBW), and very low birthweight (VLBW) by race and Hispanic origin from 2006 to 2016 for singleton births only, as rates of multiple births can impact LBW rates (4,6).
低出生体重（LBW）是美国婴儿死亡的主要原因之一（1）。低出生体重婴儿也更有可能出现健康问题（2）。在达到四十年来的最高水平后，2006年至2014年期间，所有出生婴儿的低出生体重率有所下降（3,4），但在2015年和2016年趋势逆转，低出生体重率上升（4），这使得距离《健康人民2020》将低出生体重率降至活产婴儿的7.8%的目标越来越远（5）。本报告仅显示了2006年至2016年单胎出生中按种族和西班牙裔血统划分的低出生体重、中度低出生体重（MLBW）和极低出生体重（VLBW）的趋势，因为多胞胎率会影响低出生体重率（4,6）。
