关键词: 低出生体重, 发生率, 影响因素

Abstract: Objective To explore the related factors of low birth weight and provide evidence for intervention measures. Methods A birth cohort was established according to the occurrence of low birth weight( including a total of 280 low birth weight and 200 normal birth weight children),the related factors of low birth weight were retrospectively investigated through maternal and child information system,using the method of binomial Logistic regression risk factors were analysed. Results The incidence of low birth weight was 4.03% in the urban district of Hefei,and the incidence in baby girls was higher than that in baby boys(χ²=38.78,P<0.05).The multi-factor studies showed that preterm birth(OR=16.466,95%CI:8.539～31.754),pregnancy complications(OR=2.559,95%CI:1.063～6.163),pregnancy weight gain (OR=0.944,95%CI:0.899～0.992)and pregnancy appetite (OR=0.264,95%CI:0.104～0.619)were associated with low birth weight. Conclusion Premature birth and pregnancy complications could increase the risk of low birth weight,then increased weight gain during pregnancy and good appetite during pregnancy could reduce low birth weight,so comprehensive measures should be taken to reduce the incidence of low birth weight.

Key words: low birth weight, incidence rate, influencing factors