{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,8]],"date-time":"2026-10-08T12:30:28Z","timestamp":1791462628489,"version":"4.3.4"},"reference-count":22,"publisher":"Elsevier BV","issue":"10","license":[{"start":{"date-parts":[[2019,10,1]],"date-time":"2019-10-01T00:00:00Z","timestamp":1569888000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2019,10,1]],"date-time":"2019-10-01T00:00:00Z","timestamp":1569888000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"funder":[{"DOI":"10.13039\/501100000226","name":"Ontario Ministry of Health and Long-Term Care","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100000226","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100000024","name":"Canadian Institutes of Health Research","doi-asserted-by":"publisher","award":["950-229920"],"award-info":[{"award-number":["950-229920"]}],"id":[{"id":"10.13039\/501100000024","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","jogc.com","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Journal of Obstetrics and Gynaecology Canada"],"published-print":{"date-parts":[[2019,10]]},"DOI":"10.1016\/j.jogc.2019.02.005","type":"journal-article","created":{"date-parts":[[2019,4,30]],"date-time":"2019-04-30T17:39:36Z","timestamp":1556645976000},"page":"1423-1432.e9","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":5,"title":["Phenotypic Classification of Preterm Birth Among Nulliparous Women: A Population-Based Cohort Study"],"prefix":"10.1016","volume":"41","author":[{"given":"Siavash","family":"Maghsoudlou","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhijie Michael","family":"Yu","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joseph","family":"Beyene","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4461-2178","authenticated-orcid":false,"given":"Sarah D.","family":"McDonald","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.jogc.2019.02.005_bib0001","doi-asserted-by":"crossref","first-page":"2151","DOI":"10.1016\/S0140-6736(12)60560-1","article-title":"Global, regional, and national causes of child mortality: an updated systematic analysis for 2010 with time trends since 2000","volume":"379","author":"Liu","year":"2012","journal-title":"Lancet"},{"key":"10.1016\/j.jogc.2019.02.005_bib0002","doi-asserted-by":"crossref","first-page":"843","DOI":"10.1001\/jama.284.7.843","article-title":"The contribution of mild and moderate preterm birth to infant mortality","volume":"284","author":"Kramer","year":"2000","journal-title":"JAMA"},{"key":"10.1016\/j.jogc.2019.02.005_bib0003","doi-asserted-by":"crossref","first-page":"1233","DOI":"10.1001\/jama.2011.1331","article-title":"Gestational age at birth and mortality in young adulthood","volume":"306","author":"Crump","year":"2011","journal-title":"JAMA"},{"key":"10.1016\/j.jogc.2019.02.005_bib0004","doi-asserted-by":"crossref","first-page":"75","DOI":"10.1016\/S0140-6736(08)60074-4","article-title":"Epidemiology and causes of preterm birth","volume":"371","author":"Goldenberg","year":"2008","journal-title":"Lancet"},{"key":"10.1016\/j.jogc.2019.02.005_bib0005","series-title":"Preterm Live Births in Canada, 2000 to 2013. Health Fact Sheets","year":"2016"},{"key":"10.1016\/j.jogc.2019.02.005_bib0006","doi-asserted-by":"crossref","first-page":"2162","DOI":"10.1016\/S0140-6736(12)60820-4","article-title":"National, regional, and worldwide estimates of preterm birth rates in the year 2010 with time trends since 1990 for selected countries: a systematic analysis and implications","volume":"379","author":"Blencowe","year":"2012","journal-title":"Lancet"},{"key":"10.1016\/j.jogc.2019.02.005_bib0007","doi-asserted-by":"crossref","first-page":"223","DOI":"10.1016\/S0140-6736(12)61856-X","article-title":"Preventing preterm births: analysis of trends and potential reductions with interventions in 39 countries with very high human development index","volume":"381","author":"Chang","year":"2013","journal-title":"Lancet"},{"key":"10.1016\/j.jogc.2019.02.005_bib0008","first-page":"1","article-title":"Births: final data for 2015","volume":"66","author":"Martin","year":"2017","journal-title":"Natl Vital Stat Rep"},{"key":"10.1016\/j.jogc.2019.02.005_bib0009","doi-asserted-by":"crossref","first-page":"78","DOI":"10.1097\/01.AOG.0000130837.57743.7b","article-title":"Heterogeneity of perinatal outcomes in the preterm delivery syndrome","volume":"104","author":"Villar","year":"2004","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.jogc.2019.02.005_bib0010","doi-asserted-by":"crossref","DOI":"10.1016\/j.ajog.2015.06.011","article-title":"Cluster analysis of spontaneous preterm birth phenotypes identifies potential associations among preterm birth mechanisms","volume":"213","author":"Esplin","year":"2015","journal-title":"Am J Obstet Gynecol"},{"issue":"Suppl 1","key":"10.1016\/j.jogc.2019.02.005_bib0011","doi-asserted-by":"crossref","first-page":"S2","DOI":"10.1186\/1471-2393-10-S1-S2","article-title":"Global report on preterm birth and stillbirth (2 of 7): discovery science","volume":"10","author":"Gravett","year":"2010","journal-title":"BMC Pregnancy Childbirth"},{"key":"10.1016\/j.jogc.2019.02.005_bib0012","doi-asserted-by":"crossref","first-page":"236","DOI":"10.1055\/s-0035-1571146","article-title":"The importance of clinical phenotype in understanding and preventing spontaneous preterm birth","volume":"33","author":"Esplin","year":"2016","journal-title":"Am J Perinatol"},{"key":"10.1016\/j.jogc.2019.02.005_bib0013","doi-asserted-by":"crossref","first-page":"119","DOI":"10.1016\/j.ajog.2011.10.866","article-title":"The preterm birth syndrome: a prototype phenotypic classification","volume":"206","author":"Villar","year":"2012","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.jogc.2019.02.005_bib0014","doi-asserted-by":"crossref","first-page":"113","DOI":"10.1016\/j.ajog.2011.10.865","article-title":"The preterm birth syndrome: issues to consider in creating a classification system","volume":"206","author":"Goldenberg","year":"2012","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.jogc.2019.02.005_bib0015","doi-asserted-by":"crossref","first-page":"108","DOI":"10.1016\/j.ajog.2011.10.864","article-title":"Challenges in defining and classifying the preterm birth syndrome","volume":"206","author":"Kramer","year":"2012","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.jogc.2019.02.005_bib0016","series-title":"Data Quality Framework","year":"2013"},{"key":"10.1016\/j.jogc.2019.02.005_bib0017","series-title":"Prenatal Nutrition","year":"2019"},{"key":"10.1016\/j.jogc.2019.02.005_bib0018","doi-asserted-by":"crossref","first-page":"21","DOI":"10.1186\/s12884-015-0452-0","article-title":"Contribution of prepregnancy body mass index and gestational weight gain to adverse neonatal outcomes: population attributable fractions for Canada","volume":"15","author":"Dzakpasu","year":"2015","journal-title":"BMC Pregnancy Childbirth"},{"key":"10.1016\/j.jogc.2019.02.005_bib0019","doi-asserted-by":"crossref","first-page":"b2393","DOI":"10.1136\/bmj.b2393","article-title":"Multiple imputation for missing data in epidemiological and clinical research: potential and pitfalls","volume":"338","author":"Sterne","year":"2009","journal-title":"BMJ"},{"key":"10.1016\/j.jogc.2019.02.005_bib0020","doi-asserted-by":"crossref","first-page":"220","DOI":"10.1001\/jamapediatrics.2014.3040","article-title":"The distribution of clinical phenotypes of preterm birth syndrome implications for prevention","volume":"169","author":"Barros","year":"2015","journal-title":"JAMA Pediatr"},{"key":"10.1016\/j.jogc.2019.02.005_bib0021","doi-asserted-by":"crossref","first-page":"487","DOI":"10.1016\/j.ajog.2015.02.010","article-title":"The phenotype of spontaneous preterm birth: application of a clinical phenotyping tool","volume":"212","author":"Manuck","year":"2015","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.jogc.2019.02.005_bib0022","doi-asserted-by":"crossref","first-page":"763","DOI":"10.1111\/1471-0528.13428","article-title":"Maternal, fetal, and placental conditions associated with medically indicated late preterm and early term delivery: a retrospective study","volume":"123","author":"Brown","year":"2016","journal-title":"BJOG"}],"container-title":["Journal of Obstetrics and Gynaecology Canada"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S1701216319300763?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S1701216319300763?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,10,28]],"date-time":"2025-10-28T15:34:59Z","timestamp":1761665699000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S1701216319300763"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,10]]},"references-count":22,"journal-issue":{"issue":"10","published-print":{"date-parts":[[2019,10]]}},"alternative-id":["S1701216319300763"],"URL":"https:\/\/doi.org\/10.1016\/j.jogc.2019.02.005","relation":{},"ISSN":["1701-2163"],"issn-type":[{"value":"1701-2163","type":"print"}],"subject":[],"published":{"date-parts":[[2019,10]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Phenotypic Classification of Preterm Birth Among Nulliparous Women: A Population-Based Cohort Study","name":"articletitle","label":"Article Title"},{"value":"Journal of Obstetrics and Gynaecology Canada","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.jogc.2019.02.005","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2019 The Society of Obstetricians and Gynaecologists of Canada\/La Soci\u00e9t\u00e9 des obst\u00e9triciens et gyn\u00e9cologues du Canada. Published by Elsevier Inc. All rights reserved.","name":"copyright","label":"Copyright"}]}}