{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,22]],"date-time":"2026-07-22T01:50:50Z","timestamp":1784685050475,"version":"3.55.0"},"reference-count":25,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2019,4,15]],"date-time":"2019-04-15T00:00:00Z","timestamp":1555286400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/501100004861","name":"Mackay Memorial Hospital","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100004861","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100004663","name":"Ministry of Science and Technology, Taiwan","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100004663","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Intl J Gynecology &amp; Obste"],"published-print":{"date-parts":[[2019,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>To investigate factors associated with obstetric anal sphincter injuries (<jats:styled-content style=\"fixed-case\">OASIS<\/jats:styled-content>) during vacuum delivery among Chinese women.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A retrospective cohort study of Chinese women who underwent vacuum\u2010assisted vaginal delivery at a tertiary referral hospital in Taiwan between January 2010 and December 2016. Logistic regression analysis was used to compare various factors (maternal, delivery, and neonatal factors) between women with and those without <jats:styled-content style=\"fixed-case\">OASIS<\/jats:styled-content>.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Among 18\u00a0744 Chinese women with singleton vaginal delivery, 3141 (16.76%) had vacuum assistance and 2634 (83.86%) were primiparous. Of the women who had a vacuum delivery, 1073 (34.16%) sustained <jats:styled-content style=\"fixed-case\">OASIS<\/jats:styled-content>, of whom 967 (90.12%) were primiparous. The major independent risk factors for <jats:styled-content style=\"fixed-case\">OASIS<\/jats:styled-content> were primiparity (adjusted odds ratio [<jats:styled-content style=\"fixed-case\">aOR<\/jats:styled-content>], 2.93; 95% confidence interval [<jats:styled-content style=\"fixed-case\">CI<\/jats:styled-content>], 2.29\u20133.76) and use of midline episiotomy (<jats:styled-content style=\"fixed-case\">aOR<\/jats:styled-content>, 3.01; 95% <jats:styled-content style=\"fixed-case\">CI<\/jats:styled-content>, 1.74\u20135.17). However, epidural analgesia had a protective effect (<jats:styled-content style=\"fixed-case\">aOR<\/jats:styled-content>, 0.64; 95% <jats:styled-content style=\"fixed-case\">CI<\/jats:styled-content>, 0.54\u20130.75) against <jats:styled-content style=\"fixed-case\">OASIS<\/jats:styled-content>. In multivariate analysis for the primiparous subgroup, the independent significant risk factors for <jats:styled-content style=\"fixed-case\">OASIS<\/jats:styled-content> remained the same.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>A high incidence of <jats:styled-content style=\"fixed-case\">OASIS<\/jats:styled-content> during vacuum delivery was observed among Chinese women. Midline episiotomy was found to be a modifiable risk factor for <jats:styled-content style=\"fixed-case\">OASIS<\/jats:styled-content>, whereas epidural analgesia had a protective effect.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ijgo.12813","type":"journal-article","created":{"date-parts":[[2019,3,30]],"date-time":"2019-03-30T14:28:10Z","timestamp":1553956090000},"page":"354-360","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Factors associated with obstetric anal sphincter injuries during vacuum delivery among Chinese women"],"prefix":"10.1002","volume":"145","author":[{"given":"Sue\u2010Jar","family":"Chen","sequence":"first","affiliation":[{"name":"Department of Medicine Mackay Medical College  New Taipei City Taiwan"},{"name":"Department of Obstetrics and Gynecology Mackay Memorial Hospital  Taipei Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chie\u2010Pein","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Medicine Mackay Medical College  New Taipei City Taiwan"},{"name":"Department of Obstetrics and Gynecology Mackay Memorial Hospital  Taipei Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fang\u2010Ju","family":"Sun","sequence":"additional","affiliation":[{"name":"Department of Medical Research Mackay Memorial Hospital  Taipei Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chen\u2010Yu","family":"Chen","sequence":"additional","affiliation":[{"name":"Department of Medicine Mackay Medical College  New Taipei City Taiwan"},{"name":"Department of Obstetrics and Gynecology Mackay Memorial Hospital  Taipei Taiwan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2019,4,15]]},"reference":[{"key":"e_1_2_8_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2012.06.055"},{"key":"e_1_2_8_3_1","first-page":"e12","article-title":"Operative vaginal delivery","volume":"126","author":"American College of Obstetricians and Gynecologists","year":"2015","journal-title":"Obstet Gynecol"},{"key":"e_1_2_8_4_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2013.08.043"},{"key":"e_1_2_8_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejogrb.2014.11.023"},{"key":"e_1_2_8_6_1","doi-asserted-by":"publisher","DOI":"10.1111\/1471-0528.13439"},{"key":"e_1_2_8_7_1","doi-asserted-by":"publisher","DOI":"10.1111\/aogs.12557"},{"key":"e_1_2_8_8_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2006.06.078"},{"key":"e_1_2_8_9_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0b013e31820afaf2"},{"key":"e_1_2_8_10_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1471-0528.2011.03210.x"},{"key":"e_1_2_8_11_1","doi-asserted-by":"publisher","DOI":"10.1111\/1471-0528.12228"},{"key":"e_1_2_8_12_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejogrb.2016.10.013"},{"key":"e_1_2_8_13_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2012.02.008"},{"key":"e_1_2_8_14_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1471-0528.2007.01554.x"},{"key":"e_1_2_8_15_1","doi-asserted-by":"publisher","DOI":"10.3109\/14767058.2014.889113"},{"key":"e_1_2_8_16_1","doi-asserted-by":"publisher","DOI":"10.1002\/uog.7512"},{"key":"e_1_2_8_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijgo.2013.09.034"},{"key":"e_1_2_8_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2004.12.007"},{"issue":"11","key":"e_1_2_8_19_1","first-page":"CD005455","article-title":"Choice of instruments for assisted vaginal delivery","author":"O'Mahony F","year":"2010","journal-title":"Cochrane Database Syst Rev"},{"issue":"11","key":"e_1_2_8_20_1","first-page":"CD000224","article-title":"WITHDRAWN: Vacuum extraction versus forceps for assisted vaginal delivery","author":"Johanson R","year":"2010","journal-title":"Cochrane Database Syst Rev"},{"key":"e_1_2_8_21_1","first-page":"85","article-title":"Characteristics of normal labor","volume":"74","author":"Kilpatrick SJ","year":"1989","journal-title":"Obstet Gynecol"},{"key":"e_1_2_8_22_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jdermsci.2010.06.003"},{"key":"e_1_2_8_23_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2003.12.041"},{"key":"e_1_2_8_24_1","doi-asserted-by":"publisher","DOI":"10.1213\/ANE.0000000000001328"},{"key":"e_1_2_8_25_1","unstructured":"WernerCH SchulerW MeskendahlI.Midline episiotomy versus medio\u2010lateral episiotomy. A randomized prospective study.Proceedings of 13th World Congress of Gynecology and Obstetrics (FIGO) Singapore.London:FIGO;1991."},{"issue":"12","key":"e_1_2_8_26_1","first-page":"CD000331","article-title":"Epidural versus non\u2010epidural or no analgesia in labor","author":"Anim\u2010Somuah M","year":"2011","journal-title":"Cochrane Database Syst Rev"}],"container-title":["International Journal of Gynecology &amp; Obstetrics"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/ijgo.12813","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/onlinelibrary.wiley.com\/doi\/full-xml\/10.1002\/ijgo.12813","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/pdf\/10.1002\/ijgo.12813","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,9,10]],"date-time":"2023-09-10T21:10:21Z","timestamp":1694380221000},"score":1,"resource":{"primary":{"URL":"https:\/\/obgyn.onlinelibrary.wiley.com\/doi\/10.1002\/ijgo.12813"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,4,15]]},"references-count":25,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2019,6]]}},"alternative-id":["10.1002\/ijgo.12813"],"URL":"https:\/\/doi.org\/10.1002\/ijgo.12813","archive":["Portico"],"relation":{},"ISSN":["0020-7292","1879-3479"],"issn-type":[{"value":"0020-7292","type":"print"},{"value":"1879-3479","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,4,15]]},"assertion":[{"value":"2018-07-26","order":0,"name":"received","label":"Received","group":{"name":"publication_history","label":"Publication History"}},{"value":"2019-03-28","order":1,"name":"accepted","label":"Accepted","group":{"name":"publication_history","label":"Publication History"}},{"value":"2019-04-15","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}