Analysis of trends of birth weight, and incidence of adverse birth outcomes and relevant factors from 2002 to 2015
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摘要: 目的 描述舟山市2002-2015年新生儿出生体重变化,分析不良出生结局的发生率及影响因素。方法 利用舟山市电子医疗数据库,收集孕产妇及新生儿的相关信息,描述新生儿出生体重和不良出生结局发生率的变化趋势,采用多元Logistic回归分析其影响因素。结果 37 141例新生儿的平均出生体重为(3 388±462) g,低出生体重儿、巨大儿、早产的发生率分别为2.34%,9.42%和3.61%;高危妊娠(OR=1.80,95%CI:1.42~2.28)是低出生体重儿的危险因素;出生季节为夏季、秋季、母亲年龄<25岁、孕前消瘦等是巨大儿的保护因素。母亲孕前超重和肥胖是巨大儿的危险因素;母亲年龄<25岁是早产发生的保护因素。母亲年龄>30岁(OR=1.38,95%CI:1.19~1.60)、冬季出生(OR=1.24,95%CI:1.06~1.45)、母亲孕前超重和肥胖、高危妊娠(OR=1.95,95%CI:1.66~2.29)等是早产的危险因素。结论 舟山市2002-2015年新生儿出生体重呈下降趋势,低出生体重儿和早产儿发生率呈上升趋势。新生儿性别、出生季节,母亲年龄、孕前体质指数(body mass index,BMI)、高危妊娠等因素影响低出生体重儿、巨大儿或早产儿的发生。Abstract: Objective To describe the trends of birthweight from 2002 to 2015, and analyze the incidence of adverse birth outcomes and to explore their relevant factors. Methods Datasets were obtained from decoded Electronic medical recorder system (EMRS) of Zhoushan, trends of birthweight were described, incidence of adverse birth outcomes were analyzed. Multivariate Logistic regression was used to analyze relevant factors. Results Mean birth weight of 37 141 newborns were (3 388±462) g, and incidence of low birth weight, macrosomia, preterm birth were 2.34%, 9.42% and 3.61%, respectively. Girls had higher risk of low birth weight than boys. Pre-pregnancy underweight or overweight, high risk pregnancy (OR=1.80, 95% CI:1.42-2.28) were risk factors of low birth weight. High levels of maternal education reduced the risk of low birth weight; girls had lower risk of macrosomia than boys. Pre-pregnancy overweight and obese increased the risk of macrosomia. Born in summer or fall, maternal age <25 and pre-pregnancy underweight reduced the risk of macrosomia. Girls had lower risk of preterm birth than boys. Maternal age <25 reduced the risk of preterm, maternal age >30 (OR=1.38, 95% CI:1.19-1.60), born in winter (OR=1.24, 95% CI:1.06-1.45), pre-pregnancy overweight or obese and high risk pregnancy (OR=1.95, 95% CI:1.66-2.29) increased risk of preterm birth. Conclusions During 2002-2015, mean birth weight tends to decrease, incidence of low birth weight and preterm birth tend to increase. Incidence of macrosomia or low birth weight and preterm birth were relevant with newborn's gender, maternal age, pre-pregnancy body mass index (BMI) and high risk pregnancy.
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Key words:
- Birth weight /
- Macrosomia /
- Preterm birth /
- Factor analysis, statistical
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