On the collapsibility of measures of effect in the counterfactual causal framework

ORがcollapsibleなときもあるのか(本筋ではないけど) On the collapsibility of measures of effect in the counterfactual causal framework #iron勉強メモ https://t.co/0ILUL8ZZBs

@psotob91 @arthur_alb1 2) It is possible to compute a weighted average of the conditional RRs to arrive at the marginal RR. But the weights depend on unseen potential risks, so the marginal RR cannot be computed from them in practice. See https://t.co/8wuU

RT @MHitchingsEpi: @EpiEllie oo i actually went and followed the proof in Anders's paper and it comes out pretty quickly that it is collaps…

RT @EpiEllie: And the winner of the day, @MHitchingsEpi, coming through with a confirmed proof that Vaccine Efficacy is collapsible. (Sta…