Risk factors for SARS-CoV-2 infection: a test-negative case–control study with additional population controls in Norway
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 additional prepandemic population control group.Design and setting Test-negative d...
Main Authors: | , , , , , , , , , , , , , |
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Format: | Article |
Language: | English |
Published: |
BMJ Publishing Group
2024-01-01
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Series: | BMJ Open |
Online Access: | https://bmjopen.bmj.com/content/14/1/e073766.full |