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目的了解中国初婚育龄妇女不孕症的省际差异及与各省经济发展的关系。方法基于2001年全国计划生育/生殖健康抽样调查数据和《中国统计年鉴》,共获得符合研究条件的嵌套在30个省级单位内的3 414名育龄妇女样本,利用二层logistic回归模型等进行分析。结果中国不孕率为18.0%(95%CI=16.7%～19.3%),二层logistic回归分析显示,不孕症存在明显的省际差异,省份人均GDP水平与个体不孕风险呈负相关(OR=0.64,P<0.05),而第三产业占GDP比重则与个体不孕风险呈正相关(OR=1.04,P<0.05)。结论中国的不孕症存在省际差异,并与各省经济发展状况相关,其中的作用路径有待进一步研究。
Objective To understand the provincial differences in infertility among women of childbearing age and the relationship with provincial economic development. Methods Based on the data from the National Family Planning / Reproductive Health Survey in 2001 and the China Statistical Yearbook, a total of 3 414 women of childbearing age and nested in 30 provincial units were obtained. The data were analyzed using the two-layer logistic regression model Analyze. Results The rate of infertility in China was 18.0% (95% CI = 16.7% -19.3%). The second-level logistic regression analysis showed that there was a significant inter-provincial difference in infertility and the province’s per capita GDP was negatively correlated with the risk of infertility OR = 0.64, P <0.05), while the tertiary industry’s share of GDP was positively correlated with the risk of infertility (OR = 1.04, P <0.05). Conclusion There are inter-provincial differences in infertility in China and are related to the economic development in each province. The role of this path needs further study.