Outcomes of interest were birth weight, low birth weight, small size for gestational age, perinatal mortality and neonatal mortality.

检索结果中受到关注的是出生体重、低出生体重、小于胎龄儿、围产期死亡率和新生儿死亡率。

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The high risk factors were low birth weight, small gestational age, long term oxygen therapy and early severe anemia.

高危因素分别为低出生体重、小孕周、长期或高浓度氧疗以及早期严重贫血。

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Low gestational age also resulted in poorer overall health ratings by parents.

WSJ: Health Research Report: The Upside of Going Up and Down