{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,29]],"date-time":"2026-06-29T11:08:07Z","timestamp":1782731287433,"version":"3.54.5"},"reference-count":26,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2024,1,17]],"date-time":"2024-01-17T00:00:00Z","timestamp":1705449600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100017590","name":"Universit\u00e4tsklinikum Essen","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100017590","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["obgyn.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Intl J Gynecology &amp; Obste"],"published-print":{"date-parts":[[2024,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Objective<\/jats:title><jats:p>To compare preterm birth rates and reasons before and during the COVID\u201019\u2010pandemic using a monocentric, retrospective study.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Univariate analysis identified differences in rates and reasons for preterm birth and neonatal outcomes between the pre\u2010pandemic period (January 1, 2018 to December 31, 2019) and during the pandemic (January 1, 2020 to December 31, 2021) among all births at our tertiary obstetrical center, the University Hospital of Essen.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>The cohort consisted of 6086 deliveries with 593 liveborn preterm singletons. During the pandemic, the incidence of preterm birth decreased (10.7% vs. 8.6%; odds ratio [OR] 0.79; 95% confidence interval [CI] 0.66\u20130.93). Spontaneous preterm birth (43.2% vs. 52.3%; OR 1.47; 95% CI 1.05\u20132.03), and placenta accreta spectrum disorder (3.7% vs. 8.2%; OR 2.36; 95% CI 1.15\u20134.84) were more common reasons for preterm birth. Placental dysfunction was a less common reason (34.1% vs. 24.3%; OR 0.62; 95% CI 0.43\u20130.90). Incidences of preterm premature rupture of membranes (28.13% vs. 40.25%; OR 1.72; 95% CI 1.12\u20132.43) and oligo\u2212\/anhydramnios (3.98% vs. 7.88%; OR 2.06; 95% CI 1.02\u20134.21) increased. Iatrogenic preterm birth decreased (54.5% vs. 49.5%; OR 0.81; 95% CI 0.58\u20131.13). Stillbirth rates did not change significantly. Among term births, there were fewer spontaneous deliveries (71.0% vs. 65.8%; OR 0.78; 95% CI 0.69\u20130.88), and more elective (12.3% vs. 15.1%; OR 1.26; 95% CI 1.07\u20131.50) and unplanned (9.3% vs. 10.9%; OR 1.19; 95% CI 0.98\u20131.45) cesarean sections. During the pandemic, more term newborns were admitted to neonatal intensive care (1.4% vs. 2.5%; OR 1.86; 95% CI 1.20\u20132.88).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Our results, in line with data from other high\u2010income countries, suggest that the likely reason for the decreased preterm birth rates is the underdiagnosis of pregnancy complications.<\/jats:p><\/jats:sec>","DOI":"10.1002\/ijgo.15379","type":"journal-article","created":{"date-parts":[[2024,1,17]],"date-time":"2024-01-17T13:26:55Z","timestamp":1705498015000},"page":"404-411","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Impact of 2\u2009years of <scp>COVID<\/scp>\u201019 pandemic on preterm birth: Experience from a tertiary center of obstetrics in western Germany"],"prefix":"10.1002","volume":"166","author":[{"ORCID":"https:\/\/orcid.org\/0009-0000-2232-9075","authenticated-orcid":false,"given":"Laura E.","family":"Nagel","sequence":"first","affiliation":[{"name":"Department of Gynecology and Obstetrics University Hospital Essen  Essen Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Beatrix","family":"Reisch","sequence":"additional","affiliation":[{"name":"Department of Gynecology and Obstetrics University Hospital Essen  Essen Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Udo","family":"Schwenk","sequence":"additional","affiliation":[{"name":"Department of Gynecology and Obstetrics University Hospital Essen  Essen Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Klaus Rainer","family":"Kimmig","sequence":"additional","affiliation":[{"name":"Department of Gynecology and Obstetrics University Hospital Essen  Essen Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marvin","family":"Darkwah\u00a0Oppong","sequence":"additional","affiliation":[{"name":"Department of Neurosurgery and Spine Surgery University Hospital Essen  Essen Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mark","family":"Dzietko","sequence":"additional","affiliation":[{"name":"Department of Pediatrics University Hospital Essen  Essen Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9506-4581","authenticated-orcid":false,"given":"Alexandra","family":"Gellhaus","sequence":"additional","affiliation":[{"name":"Department of Gynecology and Obstetrics University Hospital Essen  Essen Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-3982-7027","authenticated-orcid":false,"given":"Antonella","family":"Iannaccone","sequence":"additional","affiliation":[{"name":"Department of Gynecology and Obstetrics University Hospital Essen  Essen Germany"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2024,1,17]]},"reference":[{"key":"e_1_2_9_2_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(08)60074-4"},{"issue":"50","key":"e_1_2_9_3_1","first-page":"858","article-title":"Reducing the risk of preterm birth by ambulatory risk factor management","volume":"116","author":"Berger R","year":"2019","journal-title":"Dtsch Arztebl Int"},{"key":"e_1_2_9_4_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1471-0528.2006.01120.x"},{"key":"e_1_2_9_5_1","doi-asserted-by":"publisher","DOI":"10.1016\/S2214-109X(21)00079-6"},{"key":"e_1_2_9_6_1","unstructured":"Bundesministerium f\u00fcr Gesundheit.Corona pandemic \u2013 what happened when? 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