{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,19]],"date-time":"2026-08-19T18:19:23Z","timestamp":1787163563198,"version":"build-2736575974"},"reference-count":28,"publisher":"CSIRO Publishing","issue":"4","license":[{"start":{"date-parts":[[2025,9,1]],"date-time":"2025-09-01T00:00:00Z","timestamp":1756684800000},"content-version":"vor","delay-in-days":4739,"URL":"https:\/\/doi.org\/10.1071\/journalslicense"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2012,11,23]]},"abstract":"\n Objective.<\/jats:title>\n To describe the rates of antenatal hospital admission during twin or higher order multifetal pregnancies, and the admission outcomes as discharge undelivered, transfer to higher care, or spontaneous or elective delivery.<\/jats:p>\n <\/jats:sec>\n \n Methods.<\/jats:title>\n Cohort study using linked birth and hospital data. The cohort comprised women who gave birth to twins or higher order multiple infants of = 24 weeks gestation in 2001\u20132008 and who were admitted to hospital in weeks 20\u201336 of the pregnancy.<\/jats:p>\n <\/jats:sec>\n \n Results.<\/jats:title>\n In 63.4% of 10 779 twin pregnancies and 99.5% of 197 triplet and quadruplet pregnancies, the woman was admitted to hospital at least once in weeks 20\u201336 of the pregnancy, for a total 10 985 admissions. Almost half the admissions (46.3%) ended in discharge without delivery, 10.7% in transfer to higher care, 21.1% in spontaneous labour and birth, and 21.8% in elective delivery (induction or prelabour Caesarean section). The reason for admission was preterm labour in 34.2% of admissions.<\/jats:p>\n <\/jats:sec>\n \n Conclusions.<\/jats:title>\n Hospital admission during pregnancy is common for women with multifetal pregnancies, with many of these admissions resulting in preterm birth. This is the first study to report the rate of pregnancy admissions for women with multifetal pregnancies, and provides a baseline for future studies of hospital use in this population.<\/jats:p>\n <\/jats:sec>\n \n What is known about the topic?<\/jats:title>\n Multifetal pregnancies are high risk and require greater medical care than singleton pregnancies. However, few studies specifically examine multifetal pregnancies, and most pregnancy studies exclude them, so there is little known about the resource use of this group.<\/jats:p>\n <\/jats:sec>\n \n What does this paper add?<\/jats:title>\n This is the first paper to report population rates of hospital admission during pregnancy for women with multifetal pregnancies. We report the admission rates, and the admission outcomes as discharge undelivered, transfer to higher care or spontaneous or elective delivery.<\/jats:p>\n <\/jats:sec>\n \n What are the implications for practitioners?<\/jats:title>\n Most women with multifetal pregnancies are admitted to hospital at least once during the pregnancy, with 51% of these admissions resulting in preterm delivery. Of those discharged undelivered, 60% were admitted for 1 day or less. This has implications for resource use, proposed place of birth and for practitioners advising pregnant women.<\/jats:p>\n <\/jats:sec>","DOI":"10.1071\/ah11106","type":"journal-article","created":{"date-parts":[[2012,9,10]],"date-time":"2012-09-10T02:52:46Z","timestamp":1347245566000},"page":"437-442","source":"Crossref","is-referenced-by-count":5,"title":["Multifetal pregnancies: preterm admissions and outcomes"],"prefix":"10.1071","volume":"36","author":[{"given":"Tim","family":"Badgery-Parker","sequence":"first","affiliation":[{"name":"AClinical and Population Perinatal Health Research, Kolling Institute of Medical Research, University of Sydney, Building 52, University of Sydney at Royal North Shore Hospital, St Leonards, NSW 2065, Australia."},{"name":"BCentre for Epidemiology and Research, NSW Department of Health, 73 Miller Street North Sydney, NSW 2060, Australia."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Antonia W.","family":"Shand","sequence":"additional","affiliation":[{"name":"AClinical and Population Perinatal Health Research, Kolling Institute of Medical Research, University of Sydney, Building 52, University of Sydney at Royal North Shore Hospital, St Leonards, NSW 2065, Australia."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jane B.","family":"Ford","sequence":"additional","affiliation":[{"name":"AClinical and Population Perinatal Health Research, Kolling Institute of Medical Research, University of Sydney, Building 52, University of Sydney at Royal North Shore Hospital, St Leonards, NSW 2065, Australia."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mary G.","family":"Jenkins","sequence":"additional","affiliation":[{"name":"AClinical and Population Perinatal Health Research, Kolling Institute of Medical Research, University of Sydney, Building 52, University of Sydney at Royal North Shore Hospital, St Leonards, NSW 2065, Australia."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jonathan M.","family":"Morris","sequence":"additional","affiliation":[{"name":"AClinical and Population Perinatal Health Research, Kolling Institute of Medical Research, University of Sydney, Building 52, University of Sydney at Royal North Shore Hospital, St Leonards, NSW 2065, Australia."},{"name":"CDepartment of Obstetrics, Gynaecology and Neonatology, University of Sydney, University of Sydney, Building 52, Royal North Shore Hospital, St Leonards, NSW 2065, Australia. Email: tbadg@doh.health.nsw.gov.au, antonia.shand@sydney.edu.au, jane.ford@sydney.edu.au, mary.jenkins@sydney.edu.au, jonathan.morris@sydney.edu.au"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Christine L.","family":"Roberts","sequence":"additional","affiliation":[{"name":"AClinical and Population Perinatal Health Research, Kolling Institute of Medical Research, University of Sydney, Building 52, University of Sydney at Royal North Shore Hospital, St Leonards, NSW 2065, Australia."},{"name":"CDepartment of Obstetrics, Gynaecology and Neonatology, University of Sydney, University of Sydney, Building 52, Royal North Shore Hospital, St Leonards, NSW 2065, Australia. Email: tbadg@doh.health.nsw.gov.au, antonia.shand@sydney.edu.au, jane.ford@sydney.edu.au, mary.jenkins@sydney.edu.au, jonathan.morris@sydney.edu.au"},{"name":"DCorresponding author. Email: clroberts@med.usyd.edu.au"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"67","published-online":{"date-parts":[[2012,9,10]]},"reference":[{"key":"2025111800550635100_R1"},{"key":"2025111800550635100_R2","unstructured":"AIHW National Perinatal Epidemiology and Statistics Unit. Australia\u2019s mothers and babies reports 1991\u20132008. Available at http:\/\/www.npsu.unsw.edu.au\/PRERUWeb.nsf\/page\/Perinatal+Statistics [verified 31 July 2012]."},{"key":"2025111800550635100_R3","doi-asserted-by":"publisher","first-page":"213","DOI":"10.1016\/S0020-7292(02)00147-9","article-title":"Trends in the management of twin births 1990\u20131999.","volume":"78","author":"Roberts","year":"2002","journal-title":"Int J Gynaecol Obstet"},{"key":"2025111800550635100_R4"},{"key":"2025111800550635100_R5"},{"key":"2025111800550635100_R6","doi-asserted-by":"publisher","first-page":"57","DOI":"10.1111\/j.0004-8666.2002.00057.x","article-title":"Higher order multiple pregnancies in New South Wales 1990\u20131999.","volume":"42","author":"Roberts","year":"2002","journal-title":"Aust N Z J Obstet Gynaecol"},{"key":"2025111800550635100_R7","doi-asserted-by":"publisher","first-page":"461","DOI":"10.1111\/j.1479-828X.2009.01054.x","article-title":"Twin deliveries and place of birth in NSW 2001\u20132005.","volume":"49","author":"Algert","year":"2009","journal-title":"Aust N Z J Obstet Gynaecol"},{"key":"2025111800550635100_R8","doi-asserted-by":"crossref","first-page":"837","DOI":"10.1016\/S1701-2163(16)34655-2","article-title":"Severe maternal morbidity in Canada, 2003 to 2007: surveillance using routine hospitalization data and ICD-10CA codes.","volume":"32","author":"Joseph","year":"2010","journal-title":"J Obstet Gynaecol Can"},{"key":"2025111800550635100_R9","doi-asserted-by":"publisher","first-page":"261","DOI":"10.5694\/mja11.10717","article-title":"Patterns and outcomes of preterm hospital admissions during pregnancy in NSW, 2001\u20132008.","volume":"196","author":"Badgery-Parker","year":"2012","journal-title":"Med J Aust"},{"key":"2025111800550635100_R10","unstructured":"Centre for Health Record Linkage. CHeReL Quality Assurance Procedures for Record Linkage. Available at http:\/\/www.cherel.org.au\/quality-assurance [verified 31 July 2012]."},{"issue":"4","key":"2025111800550635100_R11","doi-asserted-by":"publisher","first-page":"e7","DOI":"10.1097\/ MLR.0b013e31821d2b1d.","article-title":"Quality of data in perinatal population health databases: a systematic review.","volume":"50","author":"Lain","year":"2011","journal-title":"Med Care"},{"key":"2025111800550635100_R12","doi-asserted-by":"publisher","first-page":"144","DOI":"10.1111\/j.1365-3016.2008.00980.x","article-title":"Monitoring the quality of maternity care: how well are labour and delivery events reported in population health data?","volume":"23","author":"Roberts","year":"2009","journal-title":"Paediatr Perinat Epidemiol"},{"key":"2025111800550635100_R13","doi-asserted-by":"publisher","first-page":"36","DOI":"10.1111\/j.1479-828X.2005.00339.x","article-title":"How useful are hospital morbidity data for monitoring conditions occurring in the perinatal period?","volume":"45","author":"Taylor","year":"2005","journal-title":"Aust N Z J Obstet Gynaecol"},{"key":"2025111800550635100_R14"},{"key":"2025111800550635100_R15"},{"key":"2025111800550635100_R16"},{"key":"2025111800550635100_R17","doi-asserted-by":"publisher","first-page":"12","DOI":"10.1071\/NB11026","article-title":"Development of a maternity hospital classification for perinatal research.","volume":"23","author":"Falster","year":"2012","journal-title":"N S W Public Health Bull"},{"key":"2025111800550635100_R18","first-page":"CD000110","article-title":"Hospitalisation and bed rest for multiple pregnancy.","author":"Crowther","year":"2010","journal-title":"Cochrane Database Syst Rev"},{"key":"2025111800550635100_R19","first-page":"1460","article-title":"17-Hydroxyprogresterone caproate for twin pregnancy: a double-blind, randomized clinical trial.","volume":"114","author":"Combs","year":"2007","journal-title":"Am J Obstet Gynecol"},{"key":"2025111800550635100_R20","doi-asserted-by":"publisher","first-page":"1460","DOI":"10.1111\/j.1471-0528.2007.01515.x","article-title":"Cervical stitch (cerclage) for preventing pregnancy loss: individual patient data meta-analysis.","volume":"114","author":"Jorgensen","year":"2007","journal-title":"BJOG"},{"key":"2025111800550635100_R21","doi-asserted-by":"publisher","first-page":"297","DOI":"10.1515\/jpm.2010.020","article-title":"Increasing rates of preterm twin births coincide with improving twin pair survival.","volume":"38","author":"Hartley","year":"2010","journal-title":"J Perinat Med"},{"key":"2025111800550635100_R22","doi-asserted-by":"publisher","first-page":"29","DOI":"10.1023\/A:1014312132443","article-title":"A comparison of risk factors for twin preterm birth in the United States between 1981\u201382 and 1996\u201397.","volume":"6","author":"Kogan","year":"2002","journal-title":"Matern Child Health J"},{"issue":"Issue 4","key":"2025111800550635100_R23","doi-asserted-by":"publisher","first-page":"Art. No.: CD001803","DOI":"10.1002\/14651858.CD001803.pub2","article-title":"Antenatal day care units versus hospital admission for women with complicated pregnancy.","author":"Dowswell","year":"2009","journal-title":"Cochrane Database Syst Rev"},{"key":"2025111800550635100_R24"},{"key":"2025111800550635100_R25","doi-asserted-by":"publisher","first-page":"78","DOI":"10.1071\/AH000078","article-title":"Antenatal transfer of rural women: how does the NSW Inpatient Statistics Collection compare with an audit of hospital records?","volume":"23","author":"Roberts","year":"2000","journal-title":"Aust Health Rev"},{"key":"2025111800550635100_R26","doi-asserted-by":"publisher","first-page":"592","DOI":"10.1016\/j.ajog.2004.10.638","article-title":"Pregnancy-associated hospitalizations in the United States, 1999\u20132000.","volume":"192","author":"Bacak","year":"2005","journal-title":"Am J Obstet Gynecol"},{"key":"2025111800550635100_R27","doi-asserted-by":"publisher","first-page":"94","DOI":"10.1016\/S0029-7844(02)02024-0","article-title":"Hospitalizations during pregnancy among managed care enrollees.","volume":"100","author":"Gazmararian","year":"2002","journal-title":"Obstet Gynecol"},{"key":"2025111800550635100_R28","doi-asserted-by":"publisher","first-page":"181","DOI":"10.1007\/s10995-006-0154-3","article-title":"An analysis of antenatal hospitalization in Canada, 1991\u20132003.","volume":"11","author":"Liu","year":"2007","journal-title":"Matern Child Health J"}],"container-title":["Australian Health Review"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/connectsci.au\/ah\/article-pdf\/36\/4\/437\/1264252\/ah11106.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"syndication"},{"URL":"https:\/\/connectsci.au\/ah\/article-pdf\/36\/4\/437\/1264252\/ah11106.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,11,18]],"date-time":"2025-11-18T05:55:15Z","timestamp":1763445315000},"score":1,"resource":{"primary":{"URL":"https:\/\/connectsci.au\/ah\/article\/36\/4\/437\/188425\/Multifetal-pregnancies-preterm-admissions-and"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2012,9,10]]},"references-count":28,"journal-issue":{"issue":"4","published-print":{"date-parts":[[2012,11,23]]}},"URL":"https:\/\/doi.org\/10.1071\/ah11106","relation":{},"ISSN":["0156-5788","1449-8944"],"issn-type":[{"value":"0156-5788","type":"print"},{"value":"1449-8944","type":"electronic"}],"subject":[],"published":{"date-parts":[[2012,9,10]]}}}