深圳市龙岗区2007年低出生体重儿发生率及相关因素分析

目的 了解龙岗区低出生体重儿（LBWI）发生率和发生原因，为降低LBWI发生率提供干预措施。方法 收集龙岗区2007年出生的所有活产儿的资料，对LBWI资料进行分析。结果 龙岗区2007年活产数34232例，LBWI数1738例．LBWI发生率为5．1％。女性LBWI发生率高于男性（X^2=28．01，P〈0．001）。随胎数的增加LBWI发生率呈上升趋势（X^2趋=2365．592，P〈0．001）。早产组LBWI发生率最高（55．04％），足月产组次之（2．22％），过期产组最低（0．47％），经检验差异均有统计学意义（P〈0．001）。LBWI发生率随产检次数的增多而下降（X^2=118．876，P〈0．001）。母亲的年龄过大或过小，LBWI发生率都将增加。户籍人口LBWI发生率为4．85％，低于流动人口的5.37％，经检验差异有统计学意义（X^2=56．42．P〈0．001）。结论 加强龙岗区流动人口孕期保健，重视产前检查、预防早产、预防孕期并发症等均是降低LBWI发生率的重要措施。

Analysis of the Incidence and the Influencing Factors an the Low Birth Weight Infants in Longgang District of Shenzhen in 2007

OBJECTIVE To understand the incidence and the influencing factors of the low birth weight infants（LBWI）in Longgang District of Shenzhen in 2007, so as to provide information for LBWI control. METHODS The data of all the live infants in 2007 in Longgang District was collected, then was analysed. RESULTS There were 34 232 live infants in 2007 in Longgang District. Among them, 1 738 were LBWI. The incidence of LBWI was 5.1%. The incidence of LBWI in the female infants was higher than in the male infants. The incidence of LBWI was raised with the increased number of infants （X^2=2 365.592, P〈0.001 ）. The incidence of LBWI in the premature delivery infants was 55.04%, which was higher than in the full-term delivery infants. And the incidence of LBWI in the full-term delivery infants was 2.22%, which was higher than in the overdue delivery infants（0.47%）. There was statistic significance（P〈 0.001）. The incidence of LBWI was decreased with the increased time of the obstetric examination（X^2=118.876, P〈0.001）. If the pregnant women were too old or young, the incidence of LBWI would be increased. The incidence of LBWI in the permanent population was 4.85%, which was lower than in temporary population（5.37%）, and there was statistic significance（X^2=56.42, P〈0.001）. CONCLUSIONS We should take some pressures to strengthen the obstetric examination of the temporary population,prevent premature delivery and pregnant syndrome, so as to prevent LBWI and reduce the incidence of it.