汉中市南郑县9643例新生儿出生体重分析

The analysis of the birth weight of 9 643 newborns in Nanzheng County of Hanzhong

目的探讨单胎活产新生儿体重分布及相关因素对新生儿体重的影响。方法对2003年1月1日至2012年12月31日在汉中市南郑县人民医院产科孕妇分娩的单胎新生儿体重进行分析,记录新生儿体重及孕妇年龄、孕周、职业、居住地理位置,以及不同年度对新生儿体重的影响,并进行统计分析。结果 10年收住孕32+2~43+6周孕妇9 643例,新生儿体重分布在600~5 100g,平均体重(3 218.69±415.02)g,体重随孕周而增加(F=147.444,P<0.001)。26~35岁组孕妇分娩的新生儿体重较重,各年龄组比较差异有统计学意义(F=21.542,P<0.001)。男性新生儿体重明显重于女性(F=13.985),平川丘陵居住的孕妇新生儿体重较山区重(F=12.387),2~3产次出生的新生儿较1、4产次重(F=32.868),均P<0.001,农民与职工孕妇的新生儿体重相近(P>0.05)。孕32^(+2)~43^(+6)周、孕36~41^(+6)周、孕38~41^(+6)周的新生儿出生体重10年内各年度的差异有统计学意义(F值分别为2.966、3.323、3.225,均P<0.05)。结论 新生儿体重与性别、孕妇居住地理位置、产次、孕周、年龄有关,与职业无关,新生儿体重有逐年增加趋势。

Objective To discuss the weight distribution of single live birth and the influence of related factors on weight of newborns. Methods The weight of singleton newborns delivered in the department of obstetrics of Nanzheng County People＇s Hospital of Hanzhong from January 1, 2003 to December 31, 2012. Newborn body weight was recorded, and the influence of pregnant woman age, gestational week, occupation, geographical position of living place, different year on newborns weight was analyzed. Results Totally 9 643 pregnant women with gestationa weeks between 32 ＋2 to 43 ＋6 were admitted in ten years. The distribution of the newborn weight was between 600- 5 100g, with average weight of 3 218.69 ＋ 415.02g, and the more the gestational weeks was, the heavier the newborn was （F = 147. 444, P 〈0.031）. Newborns of pregnant women were between 26-35 years were heavier, and there was difference in different groups（ F = 21. 542 ,P 〈0. O31 ）. Boys were heavier than girls（ F = 13. 985 ）, and newborns of women living on plains and hills were higher than those of women living at mountain（ F = 12.387 ）. The second and third birth newborns were heavier than the first and fourth birth（ F = 32. 868 ） （ P 〈 0. 031 ）. The weight of newborns whose mothers were from rural area was close to those whose mothers were workers in town （ P 〉 0.05 ）. There were statistical differences in weight among newborns with gestational 32 ＋2-43 ＋6 weeks, 36-41 ＋6 weeks and 38-41 ＋6 weeks in 10 years（ F value was 2. 966,3. 323 and 3. 225, respectively, all P 〈 0.05 ）. Conelusion The weight of newborns is related to its sexuality, mothers＇ living place, time of pregnancy, gestational week,years and age. But there is no direct relation with the profession. There is a tendency of newborns weight gaining increasing year by year.