{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,28]],"date-time":"2026-07-28T15:07:16Z","timestamp":1785251236265,"version":"3.55.0"},"reference-count":52,"publisher":"Springer Science and Business Media LLC","issue":"7","license":[{"start":{"date-parts":[[2024,2,22]],"date-time":"2024-02-22T00:00:00Z","timestamp":1708560000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2024,2,22]],"date-time":"2024-02-22T00:00:00Z","timestamp":1708560000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["J Perinatol"],"published-print":{"date-parts":[[2024,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec>\n                <jats:title>Hypothesis<\/jats:title>\n                <jats:p>Increased social distancing was associated with a lower incidence of extremely preterm live births (EPLB) during the initial COVID-19 pandemic period.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Study design<\/jats:title>\n                <jats:p>Prospective study at the NICHD Neonatal Research Network sites comparing EPLB (22<jats:sup>0\/7<\/jats:sup>\u201328<jats:sup>6\/7<\/jats:sup> weeks) and extremely preterm intrapartum stillbirths (EPIS) rates during the pandemic period (March-July, weeks 9\u201330 of 2020) with the reference period (same weeks in 2018 and 2019), correlating with state-specific social distancing index (SDI).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>EPLB and EPIS percentages did not significantly decrease (1.58\u20131.45%, <jats:italic>p<\/jats:italic>\u2009=\u20090.07, and 0.08\u20130.06%, <jats:italic>p<\/jats:italic>\u2009=\u20090.14, respectively). SDI was not significantly correlated with percent change of EPLB (CC\u2009=\u20090.29, 95% CI\u2009=\u2009\u22120.12, 0.71) or EPIS (CC\u2009=\u2009\u22120.23, 95% CI\u2009=\u2009\u22120.65, 0.18). Percent change in mean gestational age was positively correlated with SDI (CC\u2009=\u20090.49, 95% CI\u2009=\u20090.07, 0.91).<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusions<\/jats:title>\n                <jats:p>Increased social distancing was not associated with change in incidence of EPLB but was associated with a higher gestational age of extremely preterm births.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>ClinicalTrials.gov ID<\/jats:title>\n                <jats:p>Generic Database: NCT00063063.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1038\/s41372-024-01898-3","type":"journal-article","created":{"date-parts":[[2024,2,22]],"date-time":"2024-02-22T18:02:47Z","timestamp":1708624967000},"page":"1050-1057","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Social distancing and extremely preterm births in the initial COVID-19 pandemic period"],"prefix":"10.1038","volume":"44","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1580-1049","authenticated-orcid":false,"given":"Vivek V.","family":"Shukla","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5882-2232","authenticated-orcid":false,"given":"Benjamin A.","family":"Carper","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0731-9092","authenticated-orcid":false,"given":"Namasivayam","family":"Ambalavanan","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1209-6607","authenticated-orcid":false,"given":"Matthew A.","family":"Rysavy","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5568-0889","authenticated-orcid":false,"given":"Edward F.","family":"Bell","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Abhik","family":"Das","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7444-5550","authenticated-orcid":false,"given":"Ravi M.","family":"Patel","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Carl T.","family":"D\u2019Angio","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kristi L.","family":"Watterberg","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"C. 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