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目的研究母亲不同分娩年龄分组与剖宫产比率的关系,为降低剖宫产率提供参考数据。方法采用横断面时间段整群取样实况调查方法,本课题组于2005-2006年在深圳市宝安区妇幼保健院开展了8141例不同胎龄新生儿体格发育指标现场测量,并对产妇的相关影响因素进行现场调查。按母亲分娩年龄(19~38岁的每一岁)分组,研究分析各分娩年龄组剖宫产比率。结果剖宫产总平均比率为31.2%(2544/8141);18岁剖宫产率最低,为18.2%,从19~38岁剖宫产率不断攀升,37岁组、39岁组剖宫产率为47.2%、44.9%,分别为剖宫产率的最高和次高。总平均母体因素、胎儿因素、社会因素占剖宫产的构成比依次为29.6%(754/2544)、19.5%(496/2544)和50.9%(1294/2544)。母体因素的构成比伴随分娩年龄增大而增大,而胎儿因素、社会因素的构成比却伴随分娩年龄增大而减少。结论母亲分娩年龄增大伴随着母体危险因素的增大,成为剖宫产率的重要影响因素之一。
Objective To study the relationship between different age groups of maternal delivery and the rate of cesarean section and to provide reference data for reducing the rate of cesarean section. Methods A cross-sectional sampling study was conducted in this study. Our group carried out on-site measurements of physical development in 8,141 newborns with different gestational age at Bao’an District Maternal and Child Health Hospital of Shenzhen City from 2005 to 2006, Factors for on-site investigation. According to the age of childbirth (every age of 19 to 38 years old), the cesarean section rate of each childbirth age group was analyzed. Results The average rate of cesarean section was 31.2% (2544/8141). The lowest rate of cesarean section at 18 years old was 18.2%. The rate of cesarean section increased from 19 to 38 years old. The 37-year-old group and 39-year-old group had cesarean section Rates were 47.2%, 44.9%, respectively, the highest and second cesarean section rate. The total average maternal factors, fetal factors, and social factors accounted for 29.6% (754/2544), 19.5% (496/2544) and 50.9% (1294/2544) in order of cesarean section. The compositional ratio of maternal factors increases with the age of childbirth, while the constituent ratio of fetal factors and social factors decreases with the increase of childbirth age. Conclusion The increase of maternal delivery age with the increase of maternal risk factors has become one of the important factors of cesarean section rate.