{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T03:09:45Z","timestamp":1787022585801,"version":"build-2736575974"},"reference-count":52,"publisher":"Walter de Gruyter GmbH","issue":"5","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"published-print":{"date-parts":[[2016,1,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>To examine the proportion of iatrogenic births among all preterm births over a 26-year period.<\/jats:p>\n                  <jats:p>A registry-based survey of preterm deliveries between 1987 and 2012 analyzed by the onset of labor: spontaneous with intact membranes, preterm premature rupture of membranes (PPROM) or iatrogenic. Stratification into categories by gestation (22 weeks to 27 weeks and 6 days, 28 weeks to 31 weeks and 6 days, 32 weeks to 33 weeks and 6 days, 34 weeks to 36 weeks and 6 days) was performed. Preterm birth rates were analyzed using the Mantel-Haenszel linear-by-linear association<\/jats:p>\n                  <jats:p>Overall preterm birth rate was 5.9% (31328 deliveries) including 2358 (0.4%) before 28 completed weeks, 3388 (0.6%) between 28 weeks and 31 weeks 6 days, 3970 (0.8%) between 32 weeks and 33 weeks and 6 days, and 21611 (4.1%) between 34 weeks and 36 weeks and 6 days There was an increase in overall preterm birth rate (P&lt;0.001). The rate of iatrogenic preterm births and PPROM increased over time (P&lt;0.001 and P&lt;0.014, respectively). Rates of spontaneous preterm birth decreased (P&lt;0.001). After accounting for potential confounders, year of birth remained an independent risk factor for iatrogenic preterm delivery in all four gestational age categories (P&lt;0.001).<\/jats:p>\n                  <jats:p>The incidence of iatrogenic preterm birth is increasing with a concomitant decrease in the incidence of spontaneous preterm birth. Attempts to analyze, interpret and decrease preterm birth rates should consider spontaneous and iatrogenic preterm births separately.<\/jats:p>","DOI":"10.1515\/jpm-2015-0271","type":"journal-article","created":{"date-parts":[[2015,12,9]],"date-time":"2015-12-09T02:47:43Z","timestamp":1449629263000},"source":"Crossref","is-referenced-by-count":21,"title":["Changes in incidence of iatrogenic and spontaneous preterm births over time: a population-based study"],"prefix":"10.1515","volume":"44","author":[{"given":"Miha","family":"Lucovnik","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Andreja Trojner","family":"Bregar","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Lili","family":"Steblovnik","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ivan","family":"Verdenik","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ksenija","family":"Gersak","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Isaac","family":"Blickstein","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Natasa","family":"Tul","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"374","reference":[{"key":"ref131","doi-asserted-by":"crossref","first-page":"402","DOI":"10.1097\/AOG.0b013e3181e9322a","article-title":"Prevention of preeclampsia and intrauterine growth restriction with aspirin started 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National Institute of Child Health and Human Development Network of Maternal-Fetal Medicine Units","volume":"182","year":"2000","journal-title":"Am J Obstet Gynecol."},{"key":"ref151","doi-asserted-by":"crossref","first-page":"1557","DOI":"10.1016\/j.ajog.2006.05.021","article-title":"Maternal-fetal conditions necessitating a medical intervention resulting in preterm birth","volume":"195","year":"2006","journal-title":"Am J Obstet Gynecol."},{"key":"ref81","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","year":"2013","journal-title":"Lancet."},{"key":"ref201","doi-asserted-by":"crossref","first-page":"311","DOI":"10.1016\/j.ejogrb.2013.09.040","article-title":"The contribution of twins conceived by assisted reproduction technology to the very preterm birth rate: a population-based study","volume":"171","year":"2013","journal-title":"Eur J Obstet Gynecol Reprod Biol."},{"key":"ref441","doi-asserted-by":"crossref","first-page":"1557","DOI":"10.1016\/j.ajog.2006.05.021","article-title":"Maternal-fetal conditions necessitating a medical intervention resulting in preterm birth","volume":"195","year":"2006","journal-title":"Am J Obstet Gynecol."}],"container-title":["Journal of Perinatal Medicine"],"original-title":[],"link":[{"URL":"https:\/\/www.degruyter.com\/document\/doi\/10.1515\/jpm-2015-0271\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,8,15]],"date-time":"2023-08-15T22:57:20Z","timestamp":1692140240000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.degruyter.com\/document\/doi\/10.1515\/jpm-2015-0271\/html"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2016,1,1]]},"references-count":52,"journal-issue":{"issue":"5"},"URL":"https:\/\/doi.org\/10.1515\/jpm-2015-0271","relation":{},"ISSN":["1619-3997","0300-5577"],"issn-type":[{"value":"1619-3997","type":"electronic"},{"value":"0300-5577","type":"print"}],"subject":[],"published":{"date-parts":[[2016,1,1]]}}}