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Causal DAG templates

Biology — Causal DAG: Healthy-User Bias

Why exercise studies can overstate benefit.

Causal DAGLife SciencesCausal DAG syntax docs
Template previewCausal DAG
Exercise and mortality (healthy-user bias)EExerciseDO NOT ADJUSTOMortalityDO NOT ADJUSTHOverall healthinessIUnderlying illnessExposureOutcomeConfounderMediatorUnobservedNo simple identification strategy works here: no adjustment set blocks every backdoor path, no front door is open, and nothing in this diagram…No simple identification strategy works for the effect of `Exercise` on `Mortality`. Three doors were tried and all three are shut: no set of the observed variabl…

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title "Exercise and mortality (healthy-user bias)"
exposure E "Exercise"
outcome O "Mortality"
confounder H "Overall healthiness"
unobserved I "Underlying illness"
E -> O
H -> E
H -> O
I -> E
I -> O