• Risk factors for SARS-CoV-2 infection: a test-negative case-control study with additional population controls in Norway 

      Sarjomaa, Marjut Anneli; Zhang, Chi; Tveten, Yngvar; Kersten, Hege; Reiso, Harald; Eikeland, Randi; Kongerud, Johny; Berg, Kristine Karlsrud; Thilesen, Carina; Nordbø, Svein Arne; Aaberge, Ingeborg Sundsvalen; Vandenbroucke, Jan; Pearce, Neil; Fell, Anne Kristin M. (Peer reviewed; Journal article, 2024)
      Objectives This study aims to assess risk factors for SARS-CoV-2 infection by combined design; first comparing positive cases to negative controls as determined by PCR testing and then comparing these two groups to an ...