{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,12]],"date-time":"2026-09-12T03:40:07Z","timestamp":1789184407234,"version":"build-2803163510"},"reference-count":13,"publisher":"Elsevier BV","issue":"3","license":[{"start":{"date-parts":[[2004,9,1]],"date-time":"2004-09-01T00:00:00Z","timestamp":1093996800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2004,9,1]],"date-time":"2004-09-01T00:00:00Z","timestamp":1093996800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"},{"start":{"date-parts":[[2004,9,1]],"date-time":"2004-09-01T00:00:00Z","timestamp":1093996800000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-017"},{"start":{"date-parts":[[2004,9,1]],"date-time":"2004-09-01T00:00:00Z","timestamp":1093996800000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-037"},{"start":{"date-parts":[[2004,9,1]],"date-time":"2004-09-01T00:00:00Z","timestamp":1093996800000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-012"},{"start":{"date-parts":[[2004,9,1]],"date-time":"2004-09-01T00:00:00Z","timestamp":1093996800000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-029"},{"start":{"date-parts":[[2004,9,1]],"date-time":"2004-09-01T00:00:00Z","timestamp":1093996800000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-004"}],"content-domain":{"domain":["ajog.org","clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["American Journal of Obstetrics and Gynecology"],"published-print":{"date-parts":[[2004,9]]},"DOI":"10.1016\/j.ajog.2004.05.073","type":"journal-article","created":{"date-parts":[[2004,10,4]],"date-time":"2004-10-04T13:02:34Z","timestamp":1096894954000},"page":"896-902","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":42,"title":["Factors predictive of failed operative vaginal delivery"],"prefix":"10.1016","volume":"191","author":[{"given":"Sameer","family":"Gopalani","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kent","family":"Bennett","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Cathy","family":"Critchlow","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.ajog.2004.05.073_bib1","first-page":"1","article-title":"Births: final data for 2001","volume":"51","author":"Martin","year":"2002","journal-title":"Natl Vital Stat Rep"},{"key":"10.1016\/j.ajog.2004.05.073_bib2","doi-asserted-by":"crossref","first-page":"2411","DOI":"10.1001\/jama.283.18.2411","article-title":"Association between method of delivery and maternal rehospitalization","volume":"283","author":"Lydon-Rochelle","year":"2000","journal-title":"JAMA"},{"key":"10.1016\/j.ajog.2004.05.073_bib3","unstructured":"Belfort M. Operative vaginal delivery. ACOG Practice Bulletin No. 17, June 2000."},{"key":"10.1016\/j.ajog.2004.05.073_bib4","doi-asserted-by":"crossref","first-page":"1203","DOI":"10.1016\/S0140-6736(01)06341-3","article-title":"Early maternal and neonatal morbidity associated with operative vaginal delivery in the second stage of labor: a cohort study","volume":"358","author":"Murphy","year":"2001","journal-title":"Lancet"},{"key":"10.1016\/j.ajog.2004.05.073_bib5","first-page":"935","article-title":"Effect of very advanced maternal age on pregnancy outcome and rate of cesarean delivery","volume":"92","author":"Dulitzki","year":"1998","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ajog.2004.05.073_bib6","doi-asserted-by":"crossref","first-page":"883","DOI":"10.1067\/mob.2001.117364","article-title":"Increased risk of cesarean delivery with advancing maternal age: indications and associated factors in nulliparous women","volume":"185","author":"Ecker","year":"2001","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2004.05.073_bib7","doi-asserted-by":"crossref","first-page":"936","DOI":"10.1016\/0002-9378(93)90030-M","article-title":"Factors contributing to the increased cesarean birth rate in older parturient women","volume":"169","author":"Adashek","year":"1993","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2004.05.073_bib8","doi-asserted-by":"crossref","first-page":"213","DOI":"10.1016\/S0029-7844(96)00449-8","article-title":"Association between pre-pregnancy obesity and the risk of cesarean delivery","volume":"89","author":"Crane","year":"1997","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ajog.2004.05.073_bib9","first-page":"39","article-title":"Obesity as a risk factor for cesarean in a low-risk population","volume":"97","author":"Kaiser","year":"2001","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ajog.2004.05.073_bib10","doi-asserted-by":"crossref","first-page":"845","DOI":"10.1067\/mob.2001.117351","article-title":"The effect of the increasing prevalence of maternal obesity on perinatal morbidity","volume":"185","author":"Lu","year":"2001","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ajog.2004.05.073_bib11","doi-asserted-by":"crossref","first-page":"35","DOI":"10.1097\/00005650-200001000-00005","article-title":"Variations in risk-adjusted cesarean delivery rates according to race and health insurance","volume":"38","author":"Aron","year":"2000","journal-title":"Med Care"},{"key":"10.1016\/j.ajog.2004.05.073_bib12","doi-asserted-by":"crossref","first-page":"625","DOI":"10.2105\/AJPH.85.5.625","article-title":"Racial\/ethnic differences in the likelihood of cesarean delivery, California","volume":"85","author":"Braveman","year":"1995","journal-title":"Am J Public Health"},{"key":"10.1016\/j.ajog.2004.05.073_bib13","series-title":"The Cochrane Library, issue 4","article-title":"Vacuum extraction versus forceps for assisted vaginal delivery (Cochrane Review)","author":"Johanson","year":"2001"}],"container-title":["American Journal of Obstetrics and Gynecology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002937804005587?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002937804005587?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,9,11]],"date-time":"2025-09-11T09:40:01Z","timestamp":1757583601000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0002937804005587"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2004,9]]},"references-count":13,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2004,9]]}},"alternative-id":["S0002937804005587"],"URL":"https:\/\/doi.org\/10.1016\/j.ajog.2004.05.073","relation":{},"ISSN":["0002-9378"],"issn-type":[{"value":"0002-9378","type":"print"}],"subject":[],"published":{"date-parts":[[2004,9]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Factors predictive of failed operative vaginal delivery","name":"articletitle","label":"Article Title"},{"value":"American Journal of Obstetrics and Gynecology","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.ajog.2004.05.073","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"Copyright \u00a9 2004 Elsevier Inc. All rights reserved.","name":"copyright","label":"Copyright"}]}}