Article

Testing behaviour may bias observational studies of vaccine effectiveness

2022-01-21

Abstract excerpt

<h4>Backgroun</h4> Recent observational studies have suggested that vaccines for the omicron variant of SARS-Cov2 may have little or no effect in preventing infection. However, the observed effects may be confounded by patient factors and preventive behaviours or vaccine-related differences in testing behaviour. To assess the potential degree of confounding, we aimed to estimate differences in testing behaviour be...

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Literature Corpus work: 5568b5ad-3849-5aff-8684-dae548c1a43b
DOI: 10.1101/2022.01.17.22269450

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