{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,13]],"date-time":"2026-02-13T12:05:30Z","timestamp":1770984330190,"version":"3.50.1"},"reference-count":35,"publisher":"Elsevier BV","issue":"1","license":[{"start":{"date-parts":[[2007,3,1]],"date-time":"2007-03-01T00:00:00Z","timestamp":1172707200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2007,3,1]],"date-time":"2007-03-01T00:00:00Z","timestamp":1172707200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","ejog.org","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["European Journal of Obstetrics &amp; Gynecology and Reproductive Biology"],"published-print":{"date-parts":[[2007,3]]},"DOI":"10.1016\/j.ejogrb.2006.05.002","type":"journal-article","created":{"date-parts":[[2006,6,24]],"date-time":"2006-06-24T07:27:02Z","timestamp":1151134022000},"page":"45-51","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":51,"title":["Is a poor pregnancy outcome related to young maternal age? A study of teenagers in Estonia during the period of major socio-economic changes (from 1992 to 2002)"],"prefix":"10.1016","volume":"131","author":[{"given":"Kai","family":"Haldre","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Kaja","family":"Rahu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Helle","family":"Karro","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mati","family":"Rahu","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"78","reference":[{"key":"10.1016\/j.ejogrb.2006.05.002_bib1","first-page":"962","article-title":"Obstetric risks of pregnancy in women less than 18 years old","volume":"96","author":"Jolly","year":"2000","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib2","doi-asserted-by":"crossref","first-page":"36","DOI":"10.1783\/147118901101194877","article-title":"What's so bad about teenage pregnancy?","volume":"27","author":"Cunnington","year":"2001","journal-title":"J Fam Plann Reprod Health Care"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib3","doi-asserted-by":"crossref","first-page":"187","DOI":"10.1016\/S1054-139X(96)00174-7","article-title":"Adolescent pregnancy: understanding the impact of age and race on outcomes","volume":"20","author":"DuPleissis","year":"1997","journal-title":"J Adolesc Health"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib4","doi-asserted-by":"crossref","first-page":"451","DOI":"10.1016\/S0029-7844(97)00009-4","article-title":"Determinants of poor pregnancy outcomes among teenagers in Sweden","volume":"89","author":"Otterblad Olausson","year":"1997","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib5","doi-asserted-by":"crossref","first-page":"342","DOI":"10.1016\/j.ajog.2004.10.593","article-title":"Maternal\u2013perinatal morbidity and mortality associated with adolescent pregnancy in Latin America: Cross-sectional study","volume":"192","author":"Conde-Agudelo","year":"2005","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib6","doi-asserted-by":"crossref","first-page":"116","DOI":"10.1111\/j.1471-0528.1999.tb08210.x","article-title":"Teenage pregnancies and risk of late fetal death and infant mortality","volume":"106","author":"Otterblad Olausson","year":"1999","journal-title":"Br J Obstet Gynaecol"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib7","doi-asserted-by":"crossref","first-page":"1211","DOI":"10.1056\/NEJM199810223391706","article-title":"Risk factors for infant homicide in the United States","volume":"339","author":"Overpeck","year":"1998","journal-title":"N Engl J Med"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib8","unstructured":"Eesti Statistikaamet. [Statistical Office of Estonia] Available at: http:\/\/pub.stat.ee\/px-web.2001\/Database\/Rahvastik\/Rahvastik.asp. Accessed December 16, 2005."},{"key":"10.1016\/j.ejogrb.2006.05.002_bib9","unstructured":"Tellmann A, Karro H, Serkina V. Estonian Medical Birth Registry 1992\u20132002. Estonian Abortion Registry 1996\u20132002. Tallinn: National Institute for Health Development, 2003."},{"key":"10.1016\/j.ejogrb.2006.05.002_bib10","unstructured":"Estonian Human Development Report, 2002. http:\/\/www.iiss.ee\/nhdr\/2002"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib11","unstructured":"Estonian Human Development Report, 1998. http:\/\/www.iiss.ee\/nhdr\/1998\/EIA98eng.pdf"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib12","unstructured":"Estonian Human Development Report, 2001. http:\/\/www.iiss.ee\/nhdr\/2001\/en\/intro.html"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib13","doi-asserted-by":"crossref","first-page":"125","DOI":"10.2105\/AJPH.92.1.125","article-title":"Defining early adolescent childbearing","volume":"92","author":"Phipps","year":"2002","journal-title":"Am J Public Health"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib14","doi-asserted-by":"crossref","first-page":"1113","DOI":"10.1056\/NEJM199504273321701","article-title":"Association of young maternal age with adverse reproductive outcomes","volume":"332","author":"Fraser","year":"1995","journal-title":"N Engl J Med"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib15","doi-asserted-by":"crossref","first-page":"565","DOI":"10.1016\/1047-2797(92)90001-7","article-title":"Young maternal age and parity. Influences on pregnancy outcome","volume":"2","author":"Scholl","year":"1992","journal-title":"Ann Epidemiol"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib16","unstructured":"World Health Organization. International Classification of Diseases. Manual of the International Statistical Classification of Diseases, Injuries and Causes of Death. Ninth Revision. Geneve: World Health Organisation, 1977."},{"key":"10.1016\/j.ejogrb.2006.05.002_bib17","doi-asserted-by":"crossref","first-page":"160","DOI":"10.1016\/j.ejogrb.2003.08.006","article-title":"Risk factors for recurrent preterm delivery","volume":"113","author":"Krymko","year":"2004","journal-title":"Eur J Obstet Gynecol Reprod Biol"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib18","doi-asserted-by":"crossref","first-page":"204","DOI":"10.1053\/sper.2001.27548","article-title":"The epidemiology of preterm labor","volume":"25","author":"Robinson","year":"2001","journal-title":"Semin Perinatol"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib19","unstructured":"StataCorp. 2003. Stata Statistical Software: Release 8.0. College Station, TX: Stata Corporation."},{"key":"10.1016\/j.ejogrb.2006.05.002_bib20","doi-asserted-by":"crossref","first-page":"179","DOI":"10.1111\/j.1471-0528.2000.tb11688.x","article-title":"Births in Finland and Estonia from 1992 to 1996: convergent differences?","volume":"107","author":"Gissler","year":"2000","journal-title":"Br J Obstet Gynaecol"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib21","doi-asserted-by":"crossref","first-page":"118","DOI":"10.1093\/ije\/29.1.118","article-title":"Social determinants of birthweight and length of gestation in Estonia during the transition to democracy","volume":"29","author":"Koupilova","year":"2000","journal-title":"Int J Epidemiol"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib22","doi-asserted-by":"crossref","first-page":"425","DOI":"10.1111\/j.0001-6349.2005.00672.x","article-title":"Impact of rapid socio-economic changes on teenage pregnancies in Estonia during 1992\u20132001","volume":"84","author":"Haldre","year":"2005","journal-title":"Acta Obstet Gynecol Scand"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib23","doi-asserted-by":"crossref","first-page":"357","DOI":"10.1111\/j.1365-3016.1989.tb00524.x","article-title":"Association between low gynaecological age and preterm birth","volume":"3","author":"Scholl","year":"1989","journal-title":"Paediatr Perinat Epidemiol"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib24","doi-asserted-by":"crossref","first-page":"400","DOI":"10.1016\/S1047-2797(97)00046-X","article-title":"Young maternal age and preterm labor","volume":"7","author":"Hediger","year":"1997","journal-title":"Ann Epidemiol"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib25","unstructured":"Papp K, Part K, T\u00f5rik S. Noorsoouuring KISS (The Youth Sexual Maturation Survey KISS). Tartu: Estonian Family Planning Association 2001 [in Estonian with English summary]."},{"key":"10.1016\/j.ejogrb.2006.05.002_bib26","doi-asserted-by":"crossref","first-page":"465","DOI":"10.1016\/S0002-9378(00)70240-7","article-title":"A systematic review and meta-analysis of prospective studies on the association between maternal cigarette smoking and preterm delivery","volume":"182","author":"Shah","year":"2000","journal-title":"Am J Obstet Gynecol"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib27","doi-asserted-by":"crossref","first-page":"22","DOI":"10.1186\/1471-2393-4-22","article-title":"Reexamining the effects of gestational age, fetal growth, and maternal smoking on neonatal mortality","volume":"4","author":"Ananth","year":"2004","journal-title":"BMC Pregn Childbirth"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib28","doi-asserted-by":"crossref","first-page":"385","DOI":"10.1007\/s10995-005-0022-6","article-title":"Self-reported and serum cotinine-validated smoking in pregnant women in Estonia","volume":"4","author":"P\u00e4rna","year":"2005","journal-title":"Matern Child Health J"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib29","doi-asserted-by":"crossref","first-page":"238","DOI":"10.1016\/S1054-139X(04)00059-X","article-title":"Smoking, alcohol use, and physical activity: a 13-year longitudinal study ranging from adolescence into adulthood","volume":"35","author":"Paavola","year":"2004","journal-title":"J Adolesc Health"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib30","doi-asserted-by":"crossref","first-page":"250","DOI":"10.1016\/j.jadohealth.2003.06.008","article-title":"Smoking and suicidality among adolescent psychiatric patients","volume":"34","author":"M\u00e4kikyr\u00f6","year":"2004","journal-title":"J Adolesc Health"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib31","series-title":"Dissertationes Medicinae Universitatis Tartuensis","article-title":"Epidemiology of sexually transmitted diseases in Estonia in 1990\u20132000","author":"Uusk\u00fcla","year":"2001"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib32","unstructured":"Rohtmets A, Karro H, Baburin A, Rahu M. Eesti s\u00fcnnitusabi suundumused 1992\u20132001 (Trends in promoting maternal and neonate health condition 1992\u20132001). Eesti Arst 2003;82:234\u20138 [in Estonian with English summary]."},{"key":"10.1016\/j.ejogrb.2006.05.002_bib33","doi-asserted-by":"crossref","first-page":"552","DOI":"10.1093\/ije\/31.3.552","article-title":"Too much too young? Teenage pregnancy is not a public health problem","volume":"31","author":"Lawlor","year":"2002","journal-title":"Int J Epidemiol"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib34","doi-asserted-by":"crossref","first-page":"456","DOI":"10.1046\/j.1365-2648.2001.01774.x","article-title":"Negotiating motherhood: the struggles of teenage mothers","volume":"34","author":"Hanna","year":"2001","journal-title":"J Adv Nurs"},{"key":"10.1016\/j.ejogrb.2006.05.002_bib35","doi-asserted-by":"crossref","first-page":"571","DOI":"10.1111\/j.1471-0528.2004.00146.x","article-title":"Teenage antenatal clinics may reduce the rate of preterm birth: a prospective study","volume":"111","author":"Quinlivan","year":"2004","journal-title":"Br J Obstet Gynaecol"}],"container-title":["European Journal of Obstetrics &amp; Gynecology and Reproductive Biology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0301211506002387?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0301211506002387?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,10,4]],"date-time":"2025-10-04T05:16:11Z","timestamp":1759554971000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0301211506002387"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2007,3]]},"references-count":35,"journal-issue":{"issue":"1","published-print":{"date-parts":[[2007,3]]}},"alternative-id":["S0301211506002387"],"URL":"https:\/\/doi.org\/10.1016\/j.ejogrb.2006.05.002","relation":{},"ISSN":["0301-2115"],"issn-type":[{"value":"0301-2115","type":"print"}],"subject":[],"published":{"date-parts":[[2007,3]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Is a poor pregnancy outcome related to young maternal age? A study of teenagers in Estonia during the period of major socio-economic changes (from 1992 to 2002)","name":"articletitle","label":"Article Title"},{"value":"European Journal of Obstetrics & Gynecology and Reproductive Biology","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.ejogrb.2006.05.002","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"Copyright \u00a9 2006 Elsevier Ireland Ltd. All rights reserved.","name":"copyright","label":"Copyright"}]}}