{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,14]],"date-time":"2026-07-14T15:24:27Z","timestamp":1784042667615,"version":"3.55.0"},"reference-count":16,"publisher":"Elsevier BV","issue":"3","license":[{"start":{"date-parts":[[2022,5,1]],"date-time":"2022-05-01T00:00:00Z","timestamp":1651363200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2022,5,1]],"date-time":"2022-05-01T00:00:00Z","timestamp":1651363200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"},{"start":{"date-parts":[[2022,5,1]],"date-time":"2022-05-01T00:00:00Z","timestamp":1651363200000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-017"},{"start":{"date-parts":[[2022,5,1]],"date-time":"2022-05-01T00:00:00Z","timestamp":1651363200000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-037"},{"start":{"date-parts":[[2022,5,1]],"date-time":"2022-05-01T00:00:00Z","timestamp":1651363200000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-012"},{"start":{"date-parts":[[2022,5,1]],"date-time":"2022-05-01T00:00:00Z","timestamp":1651363200000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-029"},{"start":{"date-parts":[[2022,5,1]],"date-time":"2022-05-01T00:00:00Z","timestamp":1651363200000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-004"}],"content-domain":{"domain":["ajogmfm.org","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["American Journal of Obstetrics &amp; Gynecology MFM"],"published-print":{"date-parts":[[2022,5]]},"DOI":"10.1016\/j.ajogmf.2022.100577","type":"journal-article","created":{"date-parts":[[2022,2,1]],"date-time":"2022-02-01T17:25:12Z","timestamp":1643736312000},"page":"100577","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":34,"title":["Adverse perinatal outcomes in a large United States birth cohort during the COVID-19 pandemic"],"prefix":"10.1016","volume":"4","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8640-3860","authenticated-orcid":false,"given":"Ethan A.","family":"Litman","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ying","family":"Yin","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Stuart J.","family":"Nelson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Emily","family":"Capbarat","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5921-2193","authenticated-orcid":false,"given":"Daniel","family":"Kerchner","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0341-1086","authenticated-orcid":false,"given":"Homa K.","family":"Ahmadzia","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.ajogmf.2022.100577_bib0001","doi-asserted-by":"crossref","first-page":"e759","DOI":"10.1016\/S2214-109X(21)00079-6","article-title":"Effects of the COVID-19 pandemic on maternal and perinatal outcomes: a systematic review and meta-analysis","volume":"9","author":"Chmielewska","year":"2021","journal-title":"Lancet Glob Health"},{"key":"10.1016\/j.ajogmf.2022.100577_bib0002","doi-asserted-by":"crossref","first-page":"714","DOI":"10.1001\/jamainternmed.2020.9241","article-title":"Clinical characteristics and outcomes of hospitalized women giving birth with and without COVID-19","volume":"181","author":"Jering","year":"2021","journal-title":"JAMA Intern Med"},{"key":"10.1016\/j.ajogmf.2022.100577_bib0003","doi-asserted-by":"crossref","DOI":"10.1001\/jamanetworkopen.2021.20456","article-title":"Characteristics and outcomes of women with COVID-19 giving birth at US academic centers during the COVID-19 pandemic","volume":"4","author":"Chinn","year":"2021","journal-title":"JAMA Netw Open"},{"key":"10.1016\/j.ajogmf.2022.100577_bib0004","doi-asserted-by":"crossref","DOI":"10.1001\/jamanetworkopen.2021.1816","article-title":"Racial\/ethnic disparities in very preterm birth and preterm birth before and during the COVID-19 pandemic","volume":"4","author":"Janevic","year":"2021","journal-title":"JAMA Netw Open"},{"key":"10.1016\/j.ajogmf.2022.100577_bib0005","doi-asserted-by":"crossref","first-page":"87","DOI":"10.1001\/jama.2020.20991","article-title":"Changes in preterm birth phenotypes and stillbirth at 2 Philadelphia hospitals during the SARS-CoV-2 pandemic, March-June 2020","volume":"325","author":"Handley","year":"2021","journal-title":"JAMA"},{"key":"10.1016\/j.ajogmf.2022.100577_bib0006","doi-asserted-by":"crossref","first-page":"585","DOI":"10.1097\/AOG.0000000000004320","article-title":"Adverse pregnancy outcomes among individuals with and without severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2): a systematic review and meta-analysis","volume":"137","author":"Huntley","year":"2021","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ajogmf.2022.100577_bib0007","doi-asserted-by":"crossref","DOI":"10.1001\/jamanetworkopen.2020.29256","article-title":"Pregnancy outcomes among women with and without severe acute respiratory syndrome coronavirus 2 infection","volume":"3","author":"Adhikari","year":"2020","journal-title":"JAMA Netw Open"},{"key":"10.1016\/j.ajogmf.2022.100577_bib0008","unstructured":"Johns Hopkins University of Medicine. Coronavirus resource center. 2021. Available at: https:\/\/coronavirus.jhu.edu\/map.html. Accessed June 1, 2021."},{"key":"10.1016\/j.ajogmf.2022.100577_bib0009","first-page":"2825","article-title":"Scikit-learn: machine learning in Python","volume":"12","author":"Pedregosa","year":"2011","journal-title":"J Mach Learn Res"},{"key":"10.1016\/j.ajogmf.2022.100577_bib0010","first-page":"61","article-title":"Econometric and statistical modeling with Python","volume":"57","author":"Seabold","year":"2010","journal-title":"Proc 9th Python Sci Conf"},{"key":"10.1016\/j.ajogmf.2022.100577_bib0011","doi-asserted-by":"crossref","first-page":"W163","DOI":"10.7326\/0003-4819-147-8-200710160-00010-w1","article-title":"Strengthening the Reporting of Observational Studies in Epidemiology (STROBE): explanation and elaboration","volume":"147","author":"Vandenbroucke","year":"2007","journal-title":"Ann Intern Med"},{"key":"10.1016\/j.ajogmf.2022.100577_bib0012","doi-asserted-by":"crossref","first-page":"2466","DOI":"10.1001\/jama.2020.8598","article-title":"COVID-19 and racial\/ethnic disparities","volume":"323","author":"Webb Hooper","year":"2020","journal-title":"JAMA"},{"key":"10.1016\/j.ajogmf.2022.100577_bib0013","doi-asserted-by":"crossref","first-page":"509","DOI":"10.1177\/1090198120929677","article-title":"Social vulnerability and racial inequality in COVID-19 deaths in Chicago","volume":"47","author":"Kim","year":"2020","journal-title":"Health Educ Behav"},{"key":"10.1016\/j.ajogmf.2022.100577_bib0014","doi-asserted-by":"crossref","first-page":"2192","DOI":"10.1001\/jama.2020.7197","article-title":"Variation in COVID-19 hospitalizations and deaths across New York City boroughs","volume":"323","author":"Wadhera","year":"2020","journal-title":"JAMA"},{"key":"10.1016\/j.ajogmf.2022.100577_bib0015","doi-asserted-by":"crossref","first-page":"93","DOI":"10.1136\/archdischild-2020-319990","article-title":"Danish premature birth rates during the COVID-19 lockdown","volume":"106","author":"Hedermann","year":"2021","journal-title":"Arch Dis Child Fetal Neonatal Ed"},{"key":"10.1016\/j.ajogmf.2022.100577_bib0016","doi-asserted-by":"crossref","first-page":"234","DOI":"10.1016\/j.ajog.2020.10.017","article-title":"A marked decrease in preterm deliveries during the coronavirus disease 2019 pandemic","volume":"224","author":"Meyer","year":"2021","journal-title":"Am J Obstet Gynecol"}],"container-title":["American Journal of Obstetrics &amp; Gynecology MFM"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S2589933322000179?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S2589933322000179?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,11,11]],"date-time":"2025-11-11T23:51:09Z","timestamp":1762905069000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S2589933322000179"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2022,5]]},"references-count":16,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2022,5]]}},"alternative-id":["S2589933322000179"],"URL":"https:\/\/doi.org\/10.1016\/j.ajogmf.2022.100577","relation":{},"ISSN":["2589-9333"],"issn-type":[{"value":"2589-9333","type":"print"}],"subject":[],"published":{"date-parts":[[2022,5]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Adverse perinatal outcomes in a large United States birth cohort during the COVID-19 pandemic","name":"articletitle","label":"Article Title"},{"value":"American Journal of Obstetrics & Gynecology MFM","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.ajogmf.2022.100577","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2022 Elsevier Inc. All rights reserved.","name":"copyright","label":"Copyright"}],"article-number":"100577"}}