{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,27]],"date-time":"2026-08-27T15:08:01Z","timestamp":1787843281018,"version":"build-2784847793"},"reference-count":43,"publisher":"Wiley","issue":"10","license":[{"start":{"date-parts":[[2020,4,20]],"date-time":"2020-04-20T00:00:00Z","timestamp":1587340800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["81771533"],"award-info":[{"award-number":["81771533"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Acta Obstet Gynecol Scand"],"published-print":{"date-parts":[[2020,10]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Introduction<\/jats:title><jats:p>The association between the mode of previous delivery and subsequent success of assisted reproductive treatment has been poorly understood. By mitigating the detrimental effect of supraphysiologic estradiol levels on endometrial receptivity, a freeze\u2010all strategy provides a novel model to investigate the sole impact of a prior cesarean delivery (CD) on embryo transfer outcomes.<\/jats:p><\/jats:sec><jats:sec><jats:title>Material and methods<\/jats:title><jats:p>This single\u2010center retrospective cohort study included 2660 patients who underwent their first frozen\u2010thawed embryo transfer cycles after a freeze\u2010all policy from January 2013 to December 2018. Patients with a history of live birth by CD were assigned to the CD group, and those with only vaginal delivery (VD) were categorized into the VD group. The primary outcome measure was live birth. Baseline characteristics of the two groups were balanced by propensity score matching in a ratio of 1:1. Univariate and multivariate logistic regression analyses were performed using the after\u2010matching data.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Compared with the VD group, the rates of clinical pregnancy (38.3% vs 44.5%; <jats:italic>P<\/jats:italic>\u00a0=\u00a0.005) and live birth (27.5% vs 33.4%; <jats:italic>P<\/jats:italic>\u00a0=\u00a0.003) were significantly lower in women with a history of CD. When adjusted for a number of major confounding factors, the negative association between a prior CD and frozen\u2010thawed embryo transfer success was maintained, with the adjusted odds ratio (OR) being 0.80 (95% CI 0.66\u20100.96) and 0.78 (95% CI 0.63\u20100.95) for clinical pregnancy and live birth, respectively. Furthermore, a CD history conferred a marginally increased risk of early miscarriage (crude OR 1.48, 95% CI 1.04\u20102.11; adjusted OR 1.47, 95% CI 1.01\u20102.14), whereas the odds of multiple and ectopic pregnancy did not show significant differences before and after adjustment.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>A prior CD was associated with a decreased chance of live birth and an increased risk of early miscarriage in frozen\u2010thawed embryo transfer cycles.<\/jats:p><\/jats:sec>","DOI":"10.1111\/aogs.13863","type":"journal-article","created":{"date-parts":[[2020,4,6]],"date-time":"2020-04-06T10:59:43Z","timestamp":1586170783000},"page":"1303-1310","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":18,"title":["Effect of a prior cesarean delivery on pregnancy outcomes of frozen\u2010thawed embryo transfer: A retrospective cohort study in a freeze\u2010all 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