【摘要】 目的：了解上海市2016-2020年51 287人工流产特征。方法：回顾性收集自2016年1月-2020年10月上海市3个区4家二甲以上医院所有人工流产病例登记资料并进行分析。结果：(1)共纳入人工流产病例51 287人次，年龄(30.7±6.2)岁，非本市户籍占78.4%,未婚者占23.8%。(2)2016-2020年人工流产人次数呈逐年下降趋势，但重复流产占比一直保持在65%左右，非本市户籍人工流产数量较本市户籍下降明显。(3)本市户籍人工流产者年龄以30～39岁居多，非本市户籍者年龄以20～29岁者居多(P<0.05)。非本市户籍人工流产者≤24岁占比高于本市户籍，<19岁者在非本市户籍和本市户籍中分别占6.0%和2.6%。(4)本市户籍与非本市户籍者人工流产高危因素顺位一致，教育程度高、本市户籍、无生育史的女性出现高危因素的风险较低(P<0.05)。(5)几乎所有人工流产均为非意愿妊娠(99.96%),其中51.5%为未避孕，48.4%为避孕失败。非本市户籍者未避孕原因占比高于本地户籍，尤其在≤24岁者更为明显(均P<0.05)。(6)避孕失败而导致人工流产的最常用避孕方式为避孕套(68.9%)、安全期避孕或体外射精(23.0%)和紧急避孕药(3.7%),使用高效避孕方法失败者占比低(4.2%)。非本市户籍采用高效避孕方法失败的占比高于本市户籍(P<0.01)。结论：2016-2020年上海市51 287例人工流产的主要原因为未避孕和采用非高效的避孕措施避孕失败，重复人工流产比例提高，应加强宣教，推广高效避孕措施的使用，降低重复流产。更多还原

【Abstract】 Objective: To understand the tendency and characteristics of induced abortion of the women in Shanghai from 2016 to 2020. Methods: The registration data of induced abortion of the women from four secondary and tertiary hospitals in three districts of Shanghai from January 2016 to October 2020 were collected retrospectively, and the statistical analysis was conducted. Results:(1)A total of 51287 women with induced abortions were included in this study, with the average age of 30.7 ± 6.2 years old, and 78.4% of these women were non-household population, and 23.8% of these women were unmarried.(2)From 2016 to 2020, the number of the induced abortions showed a downward trend year by year, and the proportion of repeated abortion of the women had maintained about 65%. The declined number of the induced abortions in the no-household residents was sig nificantly more than that in the household residents.(3)The most of the household residents with abortion aged in 30-39years old,and the most of the non-household residents with abortion aged in is higher 20-29 years old(P<0.05).The proportion of≤24 years old of the household residents with abortion was significantly higher than that of the non-household residents with abortion.The proportion of less than 19years old in the household residents with abortion and the non-household residents with abortion were 6.0% and 2.6%.(4)The abortion high risk factors of the household residents and non-household residents were in the same order,and those women with higher education level,household residence,or no reproductive history had lower risk factors of abortion(P<0.05).(5)Almost(99.96%)of the women in this study were unwanted pregnancy,which include 51.5% women without contraception used,and 48.4% women with contraceptive failure.The proportion of the women without contraception in non-household residence was significantly higher than that of the women in the household residence,especially for those women aged 24years old and below(all P<0.05).(6)The proportion of condoms used leaded to contraceptive failure was 68.9%,and which was the most commonly,followed by that(23.0%)of safe period contraception or withdrawal,and then was that(3.7%)of emergency contraceptives.The proportion of high efficient contraceptive methods used leaded to contraceptive failure was very low(only 4.2%).The proportion of high efficient contraceptive methods leaded to contraceptive failure of the women in the non-household residence was significantly higher than that of the women in the household residence(P<0.01).Conclusion:The induced abortion rate in Shanghai has shown a downward trend year by year from 2016 to 2020.The main reasons of the induced abortion of the women are no contraceptive methods used or contraceptive failure after low efficient contraceptive methods used.It is necessary to strengthen health education and to promote high efficient contraceptives used,so as for reducing the repeated abortion.更多还原