{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,2]],"date-time":"2026-11-02T11:06:19Z","timestamp":1793617579970,"version":"4.5.0"},"reference-count":17,"publisher":"MDPI AG","issue":"10","license":[{"start":{"date-parts":[[2024,5,17]],"date-time":"2024-05-17T00:00:00Z","timestamp":1715904000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JCM"],"abstract":"<jats:p>Objectives: To determine whether in a labor floor housed continuously by senior physicians the risk of adverse maternal and neonatal outcome is affected by time of delivery. Methods: This retrospective cohort study, conducted at a tertiary medical center, assessed singleton term deliveries from 1 January 2011 to 30 January 2020. Participants were categorized based on delivery timing, correlating with nursing shifts, to evaluate perinatal outcomes. The primary endpoint included adverse maternal outcomes such as emergency Cesarean section, anal sphincter injuries, blood product transfusions, and postpartum surgeries (laparotomy\/laparoscopy). Secondary outcomes focused on neonatal health indicators, including low Apgar scores, ICU admissions, respiratory issues, extended hospital stays, and neurological complications. Results: 87,863 deliveries were available for analysis with equal distribution during the day. The risk of adverse composite maternal outcome was highest during the evening (aOR 1.25, 95% CI 1.18\u20131.32) and lowest during the night (aOR 0.94, 95% CI 0.88\u20130.99) compared to daytime deliveries. This difference was primarily driven by the highest rate of emergency CD in the evening. Neonatal outcomes were comparable, except for length of stay &gt; 5 days, which was more frequent among newborns delivered during the evening and night shifts compared to the morning shift (aOR 1.19, 95% CI 1.07\u20131.33 and aOR 1.17, 95% CI 1.05\u20131.31, respectively). Conclusions: In term pregnancies, the evening shift is associated with the highest risk of adverse maternal and neonatal outcomes despite physician seniority.<\/jats:p>","DOI":"10.3390\/jcm13102952","type":"journal-article","created":{"date-parts":[[2024,5,17]],"date-time":"2024-05-17T04:26:29Z","timestamp":1715919989000},"page":"2952","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Time of Birth and the Risk of Adverse Maternal and Neonatal Outcomes\u2014A Retrospective Cohort Study"],"prefix":"10.3390","volume":"13","author":[{"given":"Anat","family":"Schwartz","sequence":"first","affiliation":[{"name":"Department of Obstetrics and Gynecology, Lis Maternity Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv 6997801, Israel"},{"name":"Faculty of Medical and Health Sciences, Tel Aviv University, Tel Aviv 6997801, Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6352-4846","authenticated-orcid":false,"given":"Shiri","family":"Shinar","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Mount Sinai Hospital, Toronto, ON M5G 1X5, Canada"},{"name":"Ontario Fetal Center, Maternal-Fetal Medicine, Mount Sinai Hospital, Department of Obstetrics and Gynaecology, University of Toronto, Toronto, ON M5S 1A1, Canada"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Amit","family":"Iton-Schwartz","sequence":"additional","affiliation":[{"name":"Faculty of Medical and Health Sciences, Tel Aviv University, Tel Aviv 6997801, Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ronella","family":"Marom","sequence":"additional","affiliation":[{"name":"Faculty of Medical and Health Sciences, Tel Aviv University, Tel Aviv 6997801, Israel"},{"name":"Department of Neonatology, Lis Maternity and Women\u2019s Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv 6997801, Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Dror","family":"Mandel","sequence":"additional","affiliation":[{"name":"Faculty of Medical and Health Sciences, Tel Aviv University, Tel Aviv 6997801, Israel"},{"name":"Department of Neonatology, Lis Maternity and Women\u2019s Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv 6997801, Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ayelet","family":"Dangot","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Lis Maternity Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv 6997801, Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ariel","family":"Many","sequence":"additional","affiliation":[{"name":"Department of Obstetrics and Gynecology, Lis Maternity Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv 6997801, Israel"},{"name":"Faculty of Medical and Health Sciences, Tel Aviv University, Tel Aviv 6997801, Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2024,5,17]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"496.e1","DOI":"10.1016\/j.ajog.2008.03.046","article-title":"Time of delivery and neonatal morbidity and mortality","volume":"199","author":"Caughey","year":"2008","journal-title":"Am. J. Obstet. Gynecol."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"352","DOI":"10.1097\/01.AOG.0000168627.33566.3c","article-title":"Time of Birth and the Risk of Neonatal Death","volume":"106","author":"Gould","year":"2005","journal-title":"Obstet. Gynecol."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"705.e1","DOI":"10.1016\/j.ajog.2015.07.018","article-title":"Effect of time of birth on maternal morbidity during childbirth hospitalization in California","volume":"213","author":"Lyndon","year":"2015","journal-title":"Am. J. Obstet. Gynecol."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"808","DOI":"10.1038\/s41372-019-0353-6","article-title":"Association between time of day and performance, indications, and outcomes of obstetric interventions among nulliparous women delivering at term","volume":"39","author":"Liu","year":"2019","journal-title":"J. Perinatol."},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"657","DOI":"10.1136\/bmj.316.7132.657","article-title":"Numbers of deaths related to intrapartum asphyxia and timing of birth in all Wales perinatal survey, 1993\u20131995","volume":"316","author":"Stewart","year":"1998","journal-title":"BMJ"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"377","DOI":"10.1097\/AOG.0000000000003922","article-title":"Time of birth and the risk of severe unexpected complications in term singleton neonates","volume":"136","author":"Gould","year":"2020","journal-title":"Obstet. Gynecol."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"535","DOI":"10.1097\/AOG.0000000000003707","article-title":"Association Between Time of Day and the Decision for an Intrapartum Cesarean Delivery","volume":"135","author":"Son","year":"2020","journal-title":"Obstet. Gynecol."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"155","DOI":"10.1097\/AOG.0000000000003033","article-title":"Daytime Compared With Nighttime Differences in Management and Outcomes of Postpartum Hemorrhage","volume":"133","author":"Yee","year":"2019","journal-title":"Obstet. Gynecol."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"218","DOI":"10.1097\/01.EDE.0000037975.55478.C7","article-title":"Time of birth and risk of intrapartum and early neonatal death","volume":"14","author":"Stephansson","year":"2003","journal-title":"Epidemiology"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"1132","DOI":"10.1016\/j.ajog.2006.06.009","article-title":"The MFMU Cesarean Registry: Impact of time of day on cesarean complications","volume":"195","author":"Bailit","year":"2006","journal-title":"Am. J. Obstet. Gynecol."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"1098","DOI":"10.1111\/j.1471-0528.2010.02611.x","article-title":"Increased adverse perinatal outcome of hospital delivery at night","volume":"117","author":"Ravelli","year":"2010","journal-title":"BJOG"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"173.e1","DOI":"10.1016\/j.ajog.2007.11.003","article-title":"Maternal-Fetal Medicine Units Network Cesarean Registry: Impact of shift change on cesarean complications","volume":"198","author":"Bailit","year":"2008","journal-title":"Am. J. Obstet. Gynecol."},{"key":"ref_13","first-page":"529","article-title":"24\/7 Presence of Medical Staff in the Labor Ward; No Day-Night Differences in Perinatal and Maternal Outcomes","volume":"34","author":"Tavares","year":"2017","journal-title":"Am. J. Perinatol."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"e046433","DOI":"10.1136\/bmjopen-2020-046433","article-title":"Maternal childbirth experience and time of delivery: A retrospective 7-year cohort study of 105 847 parturients in Finland","volume":"11","author":"Joensuu","year":"2021","journal-title":"BMJ Open"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"2514","DOI":"10.1056\/NEJMoa1900669","article-title":"Effect on Patient Safety of a Resident Physician Schedule without 24-Hour Shifts","volume":"382","author":"Landrigan","year":"2020","journal-title":"N. Engl. J. Med."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"527","DOI":"10.1097\/AOG.0000000000003675","article-title":"Association of Time of Delivery with Composite Adverse Outcomes in Low-Risk Pregnancies","volume":"135","author":"Wagner","year":"2020","journal-title":"Obstet. Gynecol."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"884","DOI":"10.1111\/1471-0528.15000","article-title":"Do time of birth, unit volume, and staff seniority affect neonatal outcome in deliveries at \u226534 +0 weeks of gestation?","volume":"125","author":"Reif","year":"2018","journal-title":"BJOG"}],"container-title":["Journal of Clinical Medicine"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2077-0383\/13\/10\/2952\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T14:43:43Z","timestamp":1760107423000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2077-0383\/13\/10\/2952"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,5,17]]},"references-count":17,"journal-issue":{"issue":"10","published-online":{"date-parts":[[2024,5]]}},"alternative-id":["jcm13102952"],"URL":"https:\/\/doi.org\/10.3390\/jcm13102952","relation":{},"ISSN":["2077-0383"],"issn-type":[{"value":"2077-0383","type":"electronic"}],"subject":[],"published":{"date-parts":[[2024,5,17]]}}}