Skip to content
flowss
Start freeChecking your session
Causal DAG templates

Causal DAG — collider bias

Illustrating how conditioning on a collider opens a spurious path.

Causal DAGResearch & AcademicCausal DAG syntax docs
Template previewCausal DAG
Collider bias exampleASkillBEffortCAdmitted to programmeExposureOutcomeConfounderMediatorUnobserved`Effort` is not a descendant of `Skill`, so P(Effort | do(Skill)) = P(Effort): this diagram says the effect is NULL, and identified without ad…No arrow path leads from `Skill` to `Effort`. This diagram states that the exposure has NO effect on the outcome — which may be exactly the null hypothesis being …

Make it your own.

title "Collider bias example"
exposure A "Skill"
outcome  B "Effort"
node     C "Admitted to programme"

A -> C
B -> C