{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"submitter":["Chaffee BW"],"funding":["NHLBI NIH HHS"],"pagination":["715-722"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC8094031"],"repository":["biostudies-literature"],"omics_type":["Unknown"],"volume":["175(7)"],"pubmed_abstract":["<h4>Importance</h4>Stay-at-home policies related to the COVID-19 pandemic could disrupt adolescents' substance use and physical activity.<h4>Objective</h4>To compare adolescents' substance use and physical activity behaviors before and after stay-at-home restrictions.<h4>Design, setting, and participants</h4>Ongoing prospective cohort study of tobacco use behaviors among ninth- and tenth-grade students enrolled at 8 public high schools in Northern California from March 2019 to February 2020 and followed up from September 2019 to September 2020. Race/ethnicity was self-classified from investigator-provided categories and collected owing to racial/ethnic differences in tobacco and substance use.<h4>Exposures</h4>In California, a COVID-19 statewide stay-at-home order was imposed March 19, 202"],"journal":["JAMA pediatrics"],"pubmed_title":["Adolescents' Substance Use and Physical Activity Before and During the COVID-19 Pandemic."],"pmcid":["PMC8094031"],"funding_grant_id":["U54 HL147127"],"pubmed_authors":["Chaffee BW","Hoeft KS","Halpern-Felsher B","Couch ET","Cheng J"],"additional_accession":[]},"is_claimable":false,"name":"Adolescents' Substance Use and Physical Activity Before and During the COVID-19 Pandemic.","description":"<h4>Importance</h4>Stay-at-home policies related to the COVID-19 pandemic could disrupt adolescents' substance use and physical activity.<h4>Objective</h4>To compare adolescents' substance use and physical activity behaviors before and after stay-at-home restrictions.<h4>Design, setting, and participants</h4>Ongoing prospective cohort study of tobacco use behaviors among ninth- and tenth-grade students enrolled at 8 public high schools in Northern California from March 2019 to February 2020 and followed up from September 2019 to September 2020. Race/ethnicity was self-classified from investigator-provided categories and collected owing to racial/ethnic differences in tobacco and substance use.<h4>Exposures</h4>In California, a COVID-19 statewide stay-at-home order was imposed March 19, 202","dates":{"release":"2021-01-01T00:00:00Z","publication":"2021 Jul","modification":"2026-07-16T12:01:29.148Z","creation":"2025-04-04T10:16:09.65Z"},"accession":"S-EPMC8094031","cross_references":{"pubmed":["33938922"],"doi":["10.1001/jamapediatrics.2021.0541"]}}