{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,10]],"date-time":"2026-06-10T15:11:26Z","timestamp":1781104286348,"version":"3.54.1"},"reference-count":34,"publisher":"Public Library of Science (PLoS)","issue":"5","license":[{"start":{"date-parts":[[2024,5,31]],"date-time":"2024-05-31T00:00:00Z","timestamp":1717113600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Open Philanthropy","award":["231575"],"award-info":[{"award-number":["231575"]}]}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS ONE"],"abstract":"<jats:p>Using household-level U.S. food-purchase data, this study investigates pandemic-induced changes in two measures of diet quality, a <jats:italic>Berry Index<\/jats:italic> that measures food diversity and a <jats:italic>USDAScore<\/jats:italic> that measures adherence to dietary guidelines. Using NielsenIQ consumer panel data and a total of XXX households that neither moved location nor left the panel from 2018 through 2020, we estimate an event-study model where each household\u2019s diet quality measures before and during the pandemic period are compared against the same households\u2019 scores one year prior. In the two-to-three months following pandemic-based school closures, which spanned the March-June 2020 period, depending on the specific U.S. state, we find modest increases in food diversity (of up to 2.6 percent compared to the prior year) for the <jats:italic>Berry Index<\/jats:italic> and larger temporary increases (of up to 8.5 percent) in diet quality as measured by the <jats:italic>USDAScore<\/jats:italic>. We also find that households with different demographic characteristics generally follow the same patters; however, households with young children, low-income households, and households that do not own a vehicle exhibit smaller increases.<\/jats:p>","DOI":"10.1371\/journal.pone.0300839","type":"journal-article","created":{"date-parts":[[2024,5,31]],"date-time":"2024-05-31T19:47:41Z","timestamp":1717184861000},"page":"e0300839","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":6,"title":["Pandemic-induced changes in household-level food diversity and diet quality in the U.S."],"prefix":"10.1371","volume":"19","author":[{"given":"Daniel P.","family":"Simandjuntak","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2749-5555","authenticated-orcid":true,"given":"Edward C.","family":"Jaenicke","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Douglas H.","family":"Wrenn","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"340","published-online":{"date-parts":[[2024,5,31]]},"reference":[{"issue":"4","key":"pone.0300839.ref001","doi-asserted-by":"crossref","first-page":"834","DOI":"10.1093\/rapstu\/raaa009","article-title":"How does household spending respond to an epidemic? 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