{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,5]],"date-time":"2026-11-05T01:27:33Z","timestamp":1793842053207,"version":"4.6.1"},"reference-count":13,"publisher":"Elsevier BV","issue":"3","license":[{"start":{"date-parts":[[2021,5,1]],"date-time":"2021-05-01T00:00:00Z","timestamp":1619827200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2021,5,1]],"date-time":"2021-05-01T00:00:00Z","timestamp":1619827200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"},{"start":{"date-parts":[[2021,5,1]],"date-time":"2021-05-01T00:00:00Z","timestamp":1619827200000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-017"},{"start":{"date-parts":[[2021,5,1]],"date-time":"2021-05-01T00:00:00Z","timestamp":1619827200000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-037"},{"start":{"date-parts":[[2021,5,1]],"date-time":"2021-05-01T00:00:00Z","timestamp":1619827200000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-012"},{"start":{"date-parts":[[2021,5,1]],"date-time":"2021-05-01T00:00:00Z","timestamp":1619827200000},"content-version":"stm-asf","delay-in-days":0,"URL":"https:\/\/doi.org\/10.15223\/policy-029"},{"start":{"date-parts":[[2021,5,1]],"date-time":"2021-05-01T00:00:00Z","timestamp":1619827200000},"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 & Gynecology MFM"],"published-print":{"date-parts":[[2021,5]]},"DOI":"10.1016\/j.ajogmf.2021.100330","type":"journal-article","created":{"date-parts":[[2021,2,21]],"date-time":"2021-02-21T17:23:33Z","timestamp":1613928213000},"page":"100330","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":31,"title":["What is driving the decreased incidence of preterm birth during the coronavirus disease 2019 pandemic?"],"prefix":"10.1016","volume":"3","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6806-7787","authenticated-orcid":false,"given":"Lara","family":"Lemon","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Robert P.","family":"Edwards","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Hyagriv N.","family":"Simhan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.ajogmf.2021.100330_bib0001","article-title":"Decreased incidence of preterm birth during coronavirus disease 2019 pandemic","volume":"2","author":"Berghella","year":"2020","journal-title":"Am J Obstet Gynecol MFM"},{"key":"10.1016\/j.ajogmf.2021.100330_bib0002","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.2021.100330_bib0003","doi-asserted-by":"crossref","DOI":"10.1136\/bmjgh-2020-003075","article-title":"Unprecedented reduction in births of very low birthweight (VLBW) and extremely low birthweight (ELBW) infants during the COVID-19 lockdown in Ireland: a \u2018natural experiment\u2019 allowing analysis of data from the prior two decades","volume":"5","author":"Philip","year":"2020","journal-title":"BMJ Glob Health"},{"key":"10.1016\/j.ajogmf.2021.100330_bib0004","doi-asserted-by":"crossref","first-page":"e604","DOI":"10.1016\/S2468-2667(20)30223-1","article-title":"Impact of COVID-19 mitigation measures on the incidence of preterm birth: a national quasi-experimental study","volume":"5","author":"Been","year":"2020","journal-title":"Lancet Public Health"},{"key":"10.1016\/j.ajogmf.2021.100330_bib0005","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"},{"key":"10.1016\/j.ajogmf.2021.100330_bib0006","article-title":"Trends in intensive neonatal care during the COVID-19 outbreak in Japan","author":"Maeda","year":"2020","journal-title":"Arch Dis Child Fetal Neonatal Ed"},{"key":"10.1016\/j.ajogmf.2021.100330_bib0007","doi-asserted-by":"crossref","first-page":"2456","DOI":"10.1056\/NEJMp1802313","article-title":"Making neighborhood-disadvantage metrics accessible - the neighborhood atlas","volume":"378","author":"Kind","year":"2018","journal-title":"N Engl J Med"},{"key":"10.1016\/j.ajogmf.2021.100330_bib0008","unstructured":"Department of Medicine, School of Medicine and Public Health, University of Wisconsin. Neighborhood Atlas. 2015. Available at: https:\/\/www.neighborhoodatlas.medicine.wisc.edu\/. Accessed December 16, 2020."},{"key":"10.1016\/j.ajogmf.2021.100330_bib0009","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.2021.100330_bib0010","doi-asserted-by":"crossref","first-page":"e1273","DOI":"10.1016\/S2214-109X(20)30345-4","article-title":"Effect of the COVID-19 pandemic response on intrapartum care, stillbirth, and neonatal mortality outcomes in Nepal: a prospective observational study","volume":"8","author":"KC","year":"2020","journal-title":"Lancet Glob Health"},{"key":"10.1016\/j.ajogmf.2021.100330_bib0011","doi-asserted-by":"crossref","DOI":"10.1001\/jama.2020.12746","article-title":"Change in the incidence of stillbirth and preterm delivery during the COVID-19 pandemic","author":"Khalil","year":"2020","journal-title":"JAMA"},{"key":"10.1016\/j.ajogmf.2021.100330_bib0012","doi-asserted-by":"crossref","first-page":"e135","DOI":"10.1097\/AOG.0000000000001214","article-title":"ACOG committee opinion no. 650: physical activity and exercise during pregnancy and the postpartum period","volume":"126","year":"2015","journal-title":"Obstet Gynecol"},{"key":"10.1016\/j.ajogmf.2021.100330_bib0013","doi-asserted-by":"crossref","first-page":"561","DOI":"10.1016\/j.ajog.2016.06.014","article-title":"Exercise during pregnancy in normal-weight women and risk of preterm birth: a systematic review and meta-analysis of randomized controlled trials","volume":"215","author":"Di Mascio","year":"2016","journal-title":"Am J Obstet Gynecol"}],"container-title":["American Journal of Obstetrics & Gynecology MFM"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S2589933321000252?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S2589933321000252?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,11,11]],"date-time":"2025-11-11T23:47:40Z","timestamp":1762904860000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S2589933321000252"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,5]]},"references-count":13,"journal-issue":{"issue":"3","published-print":{"date-parts":[[2021,5]]}},"alternative-id":["S2589933321000252"],"URL":"https:\/\/doi.org\/10.1016\/j.ajogmf.2021.100330","relation":{},"ISSN":["2589-9333"],"issn-type":[{"value":"2589-9333","type":"print"}],"subject":[],"published":{"date-parts":[[2021,5]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"What is driving the decreased incidence of preterm birth during the coronavirus disease 2019 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.2021.100330","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2021 Elsevier Inc. All rights reserved.","name":"copyright","label":"Copyright"}],"article-number":"100330"}}