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Analysis

Testing group differences for confounder selection in nonrandomized studies: flawed practice

Nadia Sourial, Isabelle Vedel, Mélanie Le Berre and Tibor Schuster
CMAJ October 28, 2019 191 (43) E1189-E1193; DOI: https://doi.org/10.1503/cmaj.190085
Nadia Sourial
Department of Family Medicine, McGill University, Montréal, Que.
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Isabelle Vedel
Department of Family Medicine, McGill University, Montréal, Que.
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Mélanie Le Berre
Department of Family Medicine, McGill University, Montréal, Que.
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Tibor Schuster
Department of Family Medicine, McGill University, Montréal, Que.
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