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目的调查上海市人工流产的原因，以期降低人工流产率。方法采用分层整群抽样的方法对６２９０名沪籍人流对象进行了现况调查。结果人流对象平均年龄为（２７．０±６．９）岁，已婚占６９．１％，未婚占３０．９％。人流对象中５１．８％为没有避孕措施，４５．９％为避孕方法失败，２．４％为医学原因。避孕方法失败中前三位的原因为避孕套失败（３３．８％），宫内节育器（ＩＵＤ）原因（２９．５％）和安全期失算（１９．９％）。未婚对象中７９．５％为没有采用避孕措施。２０岁以下年龄组人流比例在下降，２０～２４岁年龄组人流比例在上升。３５～３９岁组人流比例的上升主要是由于带器妊娠增多所引起。结论建议今后应加强３５～３９岁妇女放置ＩＵＤ后的保健；加强紧急避孕知识和未婚青年避孕节育知识的宣教
Objective To investigate the causes of induced abortion in Shanghai in order to reduce the rate of induced abortion. Methods A stratified cluster sampling method was used to investigate the current status of 6290 Shanghai residents. Results The average age of abortion subjects was (27.0 ± 6.9) years old, married accounted for 69.1%, unmarried accounted for 30.9%. 51.8% of the abortive population did not have contraception, 45.9% failed the contraceptive method, and 2.4% were medical reasons. The top three reasons for the contraceptive failure were condom failure (33.8%), IUD (29.5%) and safety failure (19.9%). 79.5% of unmarried subjects did not use contraception. The proportion of people under the age of 20 is declining, and the proportion of people in the 20-24 age group is increasing. 35 to 39-year-old group increased the proportion of people is mainly due to increased pregnancy caused by the device. Conclusions It is suggested that the health of women 35-39 years old should be strengthened after IUD placement; the education of emergency contraception and contraception of unmarried youth should be strengthened