{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,6]],"date-time":"2026-11-06T23:52:36Z","timestamp":1794009156065,"version":"4.8.0"},"reference-count":50,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2022,3,1]],"date-time":"2022-03-01T00:00:00Z","timestamp":1646092800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Birth"],"published-print":{"date-parts":[[2022,9]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Childbirth is the most common cause of hospital admission in the United States. Previous studies have shown that there might be a \u201cweekend effect\u201d in perinatal care, indicating that mothers and newborns whose deliveries occur during the weekends are at increased risk of having adverse outcomes. This study aims to isolate the association between the weekend delivery and maternal\u2013neonatal adverse outcomes by investigating low\u2010risk pregnancies in nationwide data.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A population\u2010based study of all low\u2010risk pregnancies (in\u2010hospital, nonanomalous, term, normal birthweight, and singleton) was conducted based on US national natality data in 2017. Four maternal outcomes (ICU admission, uterine rupture, blood transfusion, and perineal laceration) and three neonatal outcomes (5\u2010minute Apgar &lt;7, NICU admission, and neonatal death) were defined as adverse outcomes. Logistic regression analyses were conducted to determine the association, adjusting for 23 maternal and neonatal characteristics and risk factors.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Among 3\u00a0011\u00a0577 low\u2010risk pregnancies, 6.0% were reported to have at least one of the maternal\u2013neonatal adverse outcomes. Weekend deliveries were significantly associated with six maternal\u2013neonatal adverse outcomes with an exception of neonatal death. In general, weekend deliveries were 1.13 times significantly as likely to have any of seven maternal\u2013neonatal adverse outcomes than weekday deliveries (OR 1.13, 95% CI 1.11\u20101.14), being attributed to adverse outcomes of more than 4500 mother\u2013newborn pairs.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Weekend delivery is a consistent risk factor for both mothers and babies at the national level. Furthermore, studies are needed about possible modifiable factors that mediate these associations to ensure safe childbirth regardless of the day of delivery.<\/jats:p><\/jats:sec>","DOI":"10.1111\/birt.12626","type":"journal-article","created":{"date-parts":[[2022,3,2]],"date-time":"2022-03-02T05:45:03Z","timestamp":1646199903000},"page":"549-558","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Weekend delivery and maternal\u2013neonatal adverse outcomes in low\u2010risk pregnancies in the United States: A\u00a0population\u2010based analysis of 3\u2010million live births"],"prefix":"10.1111","volume":"49","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5131-5892","authenticated-orcid":false,"given":"Sooyong","family":"Kim","sequence":"first","affiliation":[{"name":"Department of Population Health University of North Dakota School of Medicine &amp; Health Sciences  Grand Forks North Dakota USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Arielle S.","family":"Selya","sequence":"additional","affiliation":[{"name":"Department of Population Health University of North Dakota School of Medicine &amp; Health Sciences  Grand Forks North Dakota USA"},{"name":"Behavioral Sciences Group Sanford Research  Sioux Falls South Dakota USA"},{"name":"Department of Pediatrics University of South Dakota Sanford School of Medicine  Sioux Falls South Dakota USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2022,3]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1136\/bmj.2.6153.1670"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1186\/s12913-018-3688-3"},{"key":"e_1_2_6_4_1","volume-title":"Healthcare Cost and Utilization Project (HCUP) Statistical Briefs","author":"Pfuntner A","year":"2006"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1111\/j.1471-0528.2010.02611.x"},{"key":"e_1_2_6_6_1","doi-asserted-by":"publisher","DOI":"10.1097\/01.AOG.0000168627.33566.3c"},{"issue":"3","key":"e_1_2_6_7_1","first-page":"337","article-title":"Risks of stillbirth and early neonatal death by day of week","volume":"170","author":"Luo Z\u2010C","year":"2004","journal-title":"Can Med Assoc J"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1136\/bmj.h5774"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.1136\/bmjqs-2016-005257"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.1097\/01.EDE.0000037975.55478.C7"},{"key":"e_1_2_6_11_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ejogrb.2016.01.034"},{"key":"e_1_2_6_12_1","doi-asserted-by":"publisher","DOI":"10.1186\/1471-2393-12-92"},{"key":"e_1_2_6_13_1","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0b013e3182a2dd93"},{"key":"e_1_2_6_14_1","doi-asserted-by":"publisher","DOI":"10.1055\/a-0637-9400"},{"key":"e_1_2_6_15_1","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0198275"},{"key":"e_1_2_6_16_1","doi-asserted-by":"publisher","DOI":"10.1055\/s-0038-1667030"},{"key":"e_1_2_6_17_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2015.07.018"},{"issue":"9","key":"e_1_2_6_18_1","first-page":"497","article-title":"Assessing quality obstetrical care: development of standardized measures","volume":"32","author":"Mann S","year":"2006","journal-title":"Jt Comm J Qual Patient Saf"},{"key":"e_1_2_6_19_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2010.05.024"},{"key":"e_1_2_6_20_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2009.01.022"},{"key":"e_1_2_6_21_1","doi-asserted-by":"publisher","DOI":"10.2105\/AJPH.84.9.1414"},{"key":"e_1_2_6_22_1","unstructured":"National Center for Health Statistics.Quarterly provisional estimates \u2013 technical notes \u2013 Natality Quarter 1\u20102 2019. 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