为提高围产保健的质量,本文调查统计不孕治疗与早产、多胎妊娠及高危儿的关系。 1990年至1993年10月,东京大学等9个单位以不孕治疗后妊娠大于22周的571例为对象进行调查,孕妇年龄平均为31.5±3.95岁,从结婚至此次妊娠时间平均为4.0年(3.96±2.81),不孕治疗开始至此次妊娠 In order to improve the quality of perinatal care, this article investigates the relationship between infertility treatment and preterm birth, multiple pregnancies and high-risk infants. From 1990 to October 1993, 9 units such as Tokyo University investigated 571 pregnancies older than 22 weeks after infertility treatment. The average age of pregnant women was 31.5 ± 3.95 years old, and the average time from marriage to pregnancy was 4.0 years (3.96 ± 2.81), infertility treatment began to this pregnancy