出生体重和孕周在围产流行病学中的应用
摘要
出生体重是指在新生儿出生后立即测量所获得的体重,单位为克。孕周是指末次月经来潮第一天至胎儿娩出后的间隔时间,单位为周。出生体重和孕周两者关系密切,是围产流行病学的重要研究因素或研究结局。它们不仅直接影响新生儿和婴儿的疾病率和死亡率,而且与小儿的长期预后(如疾病、残疾或死亡)也密切相关。
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