Dr.RaviCardio said:The honest answer is that the effect is real, the magnitude is contested, and the individual variation is larger than either.
That is right for the common case. Whether it is right for the case being asked about depends on a detail that has not been given.
LondonLisa said:Agreed, with a caveat about community reputation: it is a lagging indicator.
Genuinely useful, thank you. I had the facts and not the framework.
Dr.RaviCardio said:The honest answer is that the effect is real, the magnitude is contested, and the individual variation is larger than either.
I am going to disagree with the direction of travel here. The thread has converged on the tidiest answer rather than the best-supported one, and those are not the same thing.
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Shop Reference StandardsThe figures, for anyone assembling their own picture. One habit that pays for itself: post the method alongside the number. A figure without its method cannot be checked, and an unchecked figure is how this community accumulates folklore.
Moderator note: leaving this open. It is being argued well and the disagreement is the useful part. Tagging this one for the weekly digest.