低出生体重儿的发生率及相关危险因素研究

Incidence rate of low birth weight and its risk factors

目的 :了解天津市低出生体重儿 (LBW)的发生率 ,探讨LBW的危险因素。方法 :以在天津市几所医院进行产前健康检查的妊娠妇女为研究对象。LBW诊断采用WHO标准 ,通过问卷调查、体格检查和随访获得研究对象的有关资料。结果 :2 5 91名孕妇共生产 2 614名活产儿 ,其中 67例为LBW ,LBW发生率为 2 5 6%。调整混杂因素后 ,非条件logistic回归分析结果显示 ,重大生活事件史、生产女婴、双胎妊娠是发生LBW的危险因素 ;而身高、分娩时孕周是保护因素。结论 :LBW的发生可能是多因素综合作用的结果。

Objective:In order to determine the incidence rate of low birth weight (LBW) infants and identify the risk factors of LBW.Methods:The universal screening for LBW was performed in the newborns in several hospitals in Tianjin. The diagnosis of LBW was based on the WHO criteria for LBW. By interview, examination and follow-up, some information of pregnant women were obtained. Results:In the cohort of 2 591 pregnant women, 2 614 infants were delivered. Among them, 67 were LBW. The incidence rate of LBW infants was 2.56%. After adjusting for some confounding factors, the results of non-conditional logistic regression showed that history of living affairs, giving birth to female infant and twin gestation were dangerous factors for delivering LBW infants, and height of body and the length of gestation period are protective factors for delivering LBW infants.Conclusion:It was multi-factors that attributed to delivering LBW infants.