{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,17]],"date-time":"2026-08-17T16:30:05Z","timestamp":1786984205986,"version":"build-2736575974"},"reference-count":24,"publisher":"Elsevier BV","issue":"1","license":[{"start":{"date-parts":[[2008,1,1]],"date-time":"2008-01-01T00:00:00Z","timestamp":1199145600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2008,1,1]],"date-time":"2008-01-01T00:00:00Z","timestamp":1199145600000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"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":[[2008,1]]},"DOI":"10.1016\/j.ajog.2007.05.040","type":"journal-article","created":{"date-parts":[[2008,1,2]],"date-time":"2008-01-02T17:32:33Z","timestamp":1199295153000},"page":"75.e1-75.e7","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":55,"title":["Prenatal health care beyond the obstetrics service: Utilization and predictors of unscheduled care"],"prefix":"10.1016","volume":"198","author":[{"given":"Urania","family":"Magriples","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Trace S.","family":"Kershaw","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sharon Schindler","family":"Rising","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zohar","family":"Massey","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeannette R.","family":"Ickovics","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.ajog.2007.05.040_bib1","series-title":"Crossing the quality of chasm: a new health system for the 21st century","year":"2002"},{"key":"10.1016\/j.ajog.2007.05.040_bib2","unstructured":"National Institute for Clinical Excellence. Antenatal care: routine care for the healthy pregnant woman. National Collaborating Centre for Women\u2019s and Children\u2019s Health. Available at: www.nice.org.uk. Accessed October 4, 2006."},{"key":"10.1016\/j.ajog.2007.05.040_bib3","series-title":"Caring for our future: the content of prenatal care","year":"1989"},{"key":"10.1016\/j.ajog.2007.05.040_bib4","article-title":"Infant death: an analysis by maternal risk and heath care","volume":"Vol 1","author":"Kessner","year":"1973"},{"key":"10.1016\/j.ajog.2007.05.040_bib5","doi-asserted-by":"crossref","first-page":"414","DOI":"10.2105\/AJPH.84.9.1414","article-title":"An evaluation of the Kessner Adequacy of Prenatal Care Index and a proposed adequacy of prenatal care utilization index","volume":"84","author":"Kotelchuck","year":"1994","journal-title":"Am J Public Health"},{"key":"10.1016\/j.ajog.2007.05.040_bib6","first-page":"68","article-title":"Issues in determining and measuring adequacy of prenatal care","volume":"18","author":"Stringer","year":"1998","journal-title":"J Perinatol"},{"key":"10.1016\/j.ajog.2007.05.040_bib7","doi-asserted-by":"crossref","first-page":"1486","DOI":"10.2105\/AJPH.84.9.1486","article-title":"The adequacy of prenatal care utilization index","volume":"84","author":"Kotelchuck","year":"1994","journal-title":"Am J Public Health"},{"key":"10.1016\/j.ajog.2007.05.040_bib8","doi-asserted-by":"crossref","first-page":"614","DOI":"10.1046\/j.1525-1497.1998.00184.x","article-title":"Ambulatory health care use by patients in a public hospital emergency department","volume":"13","author":"Rask","year":"1998","journal-title":"J Gen Intern Med"},{"key":"10.1016\/j.ajog.2007.05.040_bib9","doi-asserted-by":"crossref","first-page":"637","DOI":"10.1111\/j.1553-2712.2000.tb02037.x","article-title":"Epidemiologic analysis of an urban, public emergency department\u2019s frequent users","volume":"7","author":"Mandelberg","year":"2000","journal-title":"Acad Emerg Med"},{"key":"10.1016\/j.ajog.2007.05.040_bib10","doi-asserted-by":"crossref","first-page":"1311","DOI":"10.1197\/j.aem.2004.07.008","article-title":"Analysis of costs, length of stay and utilization of emergency department services by frequent users: implications for health policy","volume":"11","author":"Ruger","year":"2004","journal-title":"Acad Emerg Med"},{"key":"10.1016\/j.ajog.2007.05.040_bib11","doi-asserted-by":"crossref","first-page":"309","DOI":"10.1067\/mem.2003.68","article-title":"Frequent attenders to an emergency department","volume":"41","author":"Byrne","year":"2003","journal-title":"Ann Emerg Med"},{"key":"10.1016\/j.ajog.2007.05.040_bib12","doi-asserted-by":"crossref","first-page":"1255","DOI":"10.1097\/01.AOG.0000127008.14792.14","article-title":"Changes in utilization of prenatal diagnosis","volume":"103","author":"Benn","year":"2004","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ajog.2007.05.040_bib13","doi-asserted-by":"crossref","first-page":"402","DOI":"10.1136\/emj.20.5.402","article-title":"Emergency department overcrowding in the United States: an emerging threat of patient safety and public health","volume":"20","author":"Trezeciak","year":"2003","journal-title":"Emerg Med J"},{"key":"10.1016\/j.ajog.2007.05.040_bib14","doi-asserted-by":"crossref","first-page":"110","DOI":"10.1016\/j.annemergmed.2004.09.010","article-title":"The financial burden of emergency department congestion and hospital crowding for chest pain patients awaiting admission","volume":"45","author":"Bayley","year":"2005","journal-title":"Ann Emerg Med"},{"key":"10.1016\/j.ajog.2007.05.040_bib15","doi-asserted-by":"crossref","first-page":"63","DOI":"10.1016\/S0196-0644(00)70105-3","article-title":"Overcrowding in the nation\u2019s emergency departments; complex causes and disturbing effect","volume":"35","author":"Derlet","year":"2000","journal-title":"Ann Emerg Med"},{"key":"10.1016\/j.ajog.2007.05.040_bib16","doi-asserted-by":"crossref","first-page":"385","DOI":"10.1177\/014662167700100306","article-title":"The CES-D scale: a self-report depression scale for research in the general population","volume":"1","author":"Radloff","year":"1977","journal-title":"Appl Psychol Measurement"},{"key":"10.1016\/j.ajog.2007.05.040_bib17","doi-asserted-by":"crossref","first-page":"662","DOI":"10.1097\/00005053-200010000-00004","article-title":"Distinguishing between overlapping somatic symptoms of depression and HIV disease in people living with HIV-AIDS","volume":"188","author":"Kalichman","year":"2000","journal-title":"J Nerv Ment Dis"},{"key":"10.1016\/j.ajog.2007.05.040_bib18","doi-asserted-by":"crossref","first-page":"1161","DOI":"10.1016\/0277-9536(93)90236-W","article-title":"Social relationships of men at risk for AIDS","volume":"36","author":"O\u2019Brien","year":"1993","journal-title":"Soc Sci Med"},{"key":"10.1016\/j.ajog.2007.05.040_bib19","series-title":"Society and the adolescent self-image","author":"Rosenberg","year":"1965"},{"key":"10.1016\/j.ajog.2007.05.040_bib20","doi-asserted-by":"crossref","first-page":"586","DOI":"10.1037\/0278-6133.19.6.544","article-title":"The impact of prenatal maternal stress and optimistic disposition on birth outcomes in medically high-risk women","volume":"19","author":"Lobel","year":"2000","journal-title":"Health Psychol"},{"key":"10.1016\/j.ajog.2007.05.040_bib21","doi-asserted-by":"crossref","first-page":"139","DOI":"10.1002\/nur.4770100305","article-title":"Patient participation in alternative perinatal care: impact on satisfaction and health locus of control","volume":"10","author":"Littlefield","year":"1987","journal-title":"Res Nurs Health"},{"key":"10.1016\/j.ajog.2007.05.040_bib22","doi-asserted-by":"crossref","first-page":"1623","DOI":"10.1001\/jama.279.20.1623","article-title":"The changing pattern of prenatal care utilization in the United States, 1981-1995, using different prenatal care indices","volume":"279","author":"Kogan","year":"1998","journal-title":"JAMA"},{"key":"10.1016\/j.ajog.2007.05.040_bib23","doi-asserted-by":"crossref","first-page":"1070","DOI":"10.1381\/0960892054621323","article-title":"Health-related quality of life in patients with class II and class III obesity","volume":"15","author":"Sendi","year":"2005","journal-title":"Obes Surg"},{"key":"10.1016\/j.ajog.2007.05.040_bib24","doi-asserted-by":"crossref","first-page":"983","DOI":"10.1097\/01.brs.0000158957.42198.8e","article-title":"Low back pain and pelvic pain during pregnancy: prevalence and risk factors","volume":"30","author":"Mogren","year":"2005","journal-title":"Spine"}],"container-title":["American Journal of Obstetrics and Gynecology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002937807006801?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0002937807006801?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,9,11]],"date-time":"2025-09-11T10:25:42Z","timestamp":1757586342000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0002937807006801"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2008,1]]},"references-count":24,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2008,1]]}},"alternative-id":["S0002937807006801"],"URL":"https:\/\/doi.org\/10.1016\/j.ajog.2007.05.040","relation":{},"ISSN":["0002-9378"],"issn-type":[{"value":"0002-9378","type":"print"}],"subject":[],"published":{"date-parts":[[2008,1]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Prenatal health care beyond the obstetrics service: Utilization and predictors of unscheduled care","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.2007.05.040","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"Copyright \u00a9 2008 Mosby, Inc. All rights reserved.","name":"copyright","label":"Copyright"}]}}