{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,27]],"date-time":"2026-09-27T04:07:40Z","timestamp":1790482060823,"version":"4.1.0"},"reference-count":25,"publisher":"Wiley","issue":"2","license":[{"start":{"date-parts":[[2021,6,2]],"date-time":"2021-06-02T00:00:00Z","timestamp":1622592000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Intl J Gynecology &amp; Obste"],"published-print":{"date-parts":[[2022,5]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>To develop a risk score for obstetric anal sphincter injury (OASI) occurrence among nulliparous women delivering vaginally, based on data available at admission for delivery and as labor progresses.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A retrospective study of all nulliparous women who delivered vaginally between March 2011 and January 2021. Characteristics were compared between OASI and no\u2010OASI groups. Multivariable analyses were performed to identify independent risk factors for OASI occurrence.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>OASI occurred in 453 (1.7%) of 26\u00a0081 women who met the inclusion criteria. The following variables were independently associated with OASI: maternal height (adjusted odds ratio [aOR] 0.97, 95% confidence interval (CI) 0.95\u20130.99), hypertensive disorders (aOR 1.74, 95% CI 1.03\u20132.95), sonographic fetal weight estimation (aOR 1.00, 95% CI 1.00\u20131.00), second\u2010stage duration (aOR 1.00, 95% CI 1.00\u20131.00), occiput posterior position (aOR 2.87, 95% CI 1.79\u20134.62), and episiotomy performance (aOR 0.63, 95% CI 0.47\u20130.84). In a risk score based on variables available at admission for delivery, the presence of two factors was associated with 4.3% OASI risk. Upon incorporating intrapartum variables, the presence of two risk factors was associated with 2.9% OASI rate.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>A dynamic risk score for OASI occurrence based on data available at admission for delivery and as delivery progresses can assist in counseling regarding OASI risk.<\/jats:p><jats:p>A dynamic risk score for obstetric anal sphincter injury occurrence based on data available at admission for delivery and intrapartum was developed.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ijgo.13730","type":"journal-article","created":{"date-parts":[[2021,4,30]],"date-time":"2021-04-30T18:59:18Z","timestamp":1619809158000},"page":"271-276","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["A dynamic prediction score for obstetric anal sphincter injury among nulliparous women delivering vaginally"],"prefix":"10.1002","volume":"157","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0720-4343","authenticated-orcid":false,"given":"Raanan","family":"Meyer","sequence":"first","affiliation":[{"name":"The Department of Obstetrics and Gynecology the Chaim Sheba Medical Center  Ramat\u2010Gan Israel"},{"name":"Faculty of Medicine Tel\u2010Aviv University  Tel\u2010Aviv Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anat","family":"Schwartz","sequence":"additional","affiliation":[{"name":"The Department of Obstetrics and Gynecology the Chaim Sheba Medical Center  Ramat\u2010Gan Israel"},{"name":"Faculty of Medicine Tel\u2010Aviv University  Tel\u2010Aviv Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Nir","family":"Horesh","sequence":"additional","affiliation":[{"name":"Faculty of Medicine Tel\u2010Aviv University  Tel\u2010Aviv Israel"},{"name":"The Department of Surgery and Transplantation the Chaim Sheba Medical Center  Ramat\u2010Gan Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Menachem","family":"Alcalay","sequence":"additional","affiliation":[{"name":"The Department of Obstetrics and Gynecology the Chaim Sheba Medical Center  Ramat\u2010Gan Israel"},{"name":"Faculty of Medicine Tel\u2010Aviv University  Tel\u2010Aviv Israel"},{"name":"Urogynecology Unit The Department of Obstetrics and Gynecology Baruch Padeh\u2010Poria Medical Center  Tiberias Israel"},{"name":"The Faculty of Medicine at Galille Bar\u2010Ilan University  Ramat Gan Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Edward","family":"Ram","sequence":"additional","affiliation":[{"name":"Faculty of Medicine Tel\u2010Aviv University  Tel\u2010Aviv Israel"},{"name":"The Department of Surgery and Transplantation the Chaim Sheba Medical Center  Ramat\u2010Gan Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Gabriel","family":"Levin","sequence":"additional","affiliation":[{"name":"The Department of Obstetrics and Gynecology Hadassah Medical Center  Jerusalem Israel"},{"name":"Faculty of Medicine Hebrew University  Jerusalem Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2021,6,2]]},"reference":[{"key":"e_1_2_7_2_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0000000000000720"},{"key":"e_1_2_7_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.bpobgyn.2019.01.013"},{"key":"e_1_2_7_4_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0000000000002841"},{"key":"e_1_2_7_5_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00192-016-3226-y"},{"key":"e_1_2_7_6_1","doi-asserted-by":"publisher","DOI":"10.1002\/ijgo.12403"},{"key":"e_1_2_7_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2016.02.041"},{"key":"e_1_2_7_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejogrb.2020.02.025"},{"key":"e_1_2_7_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2013.08.043"},{"key":"e_1_2_7_10_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00192-020-04296-3"},{"key":"e_1_2_7_11_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00404-020-05558-7"},{"key":"e_1_2_7_12_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0000000000003041"},{"key":"e_1_2_7_13_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0000000000003018"},{"key":"e_1_2_7_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/0002-9378(82)90349-0"},{"key":"e_1_2_7_15_1","doi-asserted-by":"publisher","DOI":"10.1148\/radiology.150.2.6691115"},{"key":"e_1_2_7_16_1","doi-asserted-by":"publisher","DOI":"10.1148\/radiology.181.1.1887021"},{"key":"e_1_2_7_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2004.09.035"},{"key":"e_1_2_7_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2015.05.045"},{"key":"e_1_2_7_19_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2018.04.002"},{"key":"e_1_2_7_20_1","doi-asserted-by":"publisher","DOI":"10.1161\/CIRCULATIONAHA.110.948455"},{"key":"e_1_2_7_21_1","doi-asserted-by":"publisher","DOI":"10.1111\/birt.12137"},{"key":"e_1_2_7_22_1","doi-asserted-by":"publisher","DOI":"10.1111\/1471-0528.16092"},{"key":"e_1_2_7_23_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejogrb.2016.10.013"},{"key":"e_1_2_7_24_1","doi-asserted-by":"publisher","DOI":"10.1007\/s00404-020-05444-2"},{"key":"e_1_2_7_25_1","unstructured":"OECD.Health at a Glance 2013: OECD Indicators. 2013 [cited 2021 16\/02\/2021];https:\/\/doi.org\/10.1787\/health_glance\u20102013\u2010en"},{"key":"e_1_2_7_26_1","doi-asserted-by":"publisher","DOI":"10.1080\/14767058.2018.1514376"}],"container-title":["International Journal of Gynecology &amp; Obstetrics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/ijgo.13730","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/ijgo.13730","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/ijgo.13730","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,8,25]],"date-time":"2023-08-25T23:08:34Z","timestamp":1693004914000},"score":1,"resource":{"primary":{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/10.1002\/ijgo.13730"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,6,2]]},"references-count":25,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2022,5]]}},"alternative-id":["10.1002\/ijgo.13730"],"URL":"https:\/\/doi.org\/10.1002\/ijgo.13730","archive":["Portico"],"relation":{},"ISSN":["0020-7292","1879-3479"],"issn-type":[{"value":"0020-7292","type":"print"},{"value":"1879-3479","type":"electronic"}],"subject":[],"published":{"date-parts":[[2021,6,2]]},"assertion":[{"value":"2021-03-08","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-04-28","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2021-06-02","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}