Why the study?
Does obesity reduce mortality in heart failure patients, or is the observed association due to selection bias?
Population
Heart failure patients (general discussion)
Comparison
Obesity vs Normal weight
Design
Editorial
Authors
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This commentary demonstrates mathematically that selection bias alone is unlikely to fully explain the obesity paradox in heart failure unless unmeasured confounders exert implausibly large effects.
Does obesity reduce mortality in heart failure patients, or is the observed association due to selection bias?
This commentary demonstrates mathematically that selection bias alone is unlikely to fully explain the obesity paradox in heart failure unless unmeasured confounders exert implausibly large effects.
Glymour et al. (2013) studied this question.
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