caa a22 4500 445310049 CHVBK 20180317142626.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s00404-010-1723-7 doi (NATIONALLICENCE)springer-10.1007/s00404-010-1723-7 Repeated medical abortions and the risk of preterm birth in the subsequent pregnancy [Elektronische Daten] [Hua Liao, Qiang Wei, Lijun Duan, Junli Ge, Yuanyang Zhou, Weiyue Zeng] Purpose: The aim of this study was to determine the impact of repeated first trimester mifepristone-induced medical abortions on the risk of preterm birth in a subsequent pregnancy. Methods: This is a pregnancy-based cohort study. Clinical data were collected from seven public hospitals in Chengdu, China from January 2006 to December 2009. Pregnant women with one or more first trimester mifepristone-induced medical abortions, and/or one or more surgical abortions, or no previous induced abortions were included in the study. The women were monitored through pregnancy and birth. Samples for analysis included 18,024 singleton births. Results: The risk of preterm birth among women with one or more first trimester mifepristone-induced abortions did not differ significantly from the risk among primigravida women (OR 1.03, 95% confidence interval 0.53-1.63). The risks of preterm birth were higher among women with repeated surgical abortions in comparison to women with repeated medical abortions (OR 1.22, 95% confidence interval 1.03-1.64). Conclusions: A history of multiple first trimester mifepristone-induced abortions is not associated with a higher risk of preterm delivery among singleton births in the first subsequent pregnancy. Springer-Verlag, 2010 Medical abortion nationallicence Preterm birth nationallicence Repeated induced abortions nationallicence Mifepristone nationallicence Liao Hua Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, 610041, Chengdu, Sichuan, People's Republic of China aut Wei Qiang Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, 610041, Chengdu, Sichuan, People's Republic of China aut Duan Lijun Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, 610041, Chengdu, Sichuan, People's Republic of China aut Ge Junli Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, 610041, Chengdu, Sichuan, People's Republic of China aut Zhou Yuanyang Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, 610041, Chengdu, Sichuan, People's Republic of China aut Zeng Weiyue Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, 610041, Chengdu, Sichuan, People's Republic of China aut Archives of Gynecology and Obstetrics Springer-Verlag 284/3(2011-09-01), 579-586 0932-0067 284:3<579 2011 284 404 https://doi.org/10.1007/s00404-010-1723-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00404-010-1723-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liao Hua Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, 610041, Chengdu, Sichuan, People's Republic of China aut NATIONALLICENCE 700 1- Wei Qiang Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, 610041, Chengdu, Sichuan, People's Republic of China aut NATIONALLICENCE 700 1- Duan Lijun Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, 610041, Chengdu, Sichuan, People's Republic of China aut NATIONALLICENCE 700 1- Ge Junli Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, 610041, Chengdu, Sichuan, People's Republic of China aut NATIONALLICENCE 700 1- Zhou Yuanyang Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, 610041, Chengdu, Sichuan, People's Republic of China aut NATIONALLICENCE 700 1- Zeng Weiyue Department of Obstetrics and Gynecology, West China Second University Hospital, Sichuan University, 610041, Chengdu, Sichuan, People's Republic of China aut NATIONALLICENCE 773 0- Archives of Gynecology and Obstetrics Springer-Verlag 284/3(2011-09-01), 579-586 0932-0067 284:3<579 2011 284 404 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer