26/n This number - called the Population Attributable Fraction (PAF) - is actually calculable. The formula is pretty simple:pic.twitter.com/eoTJ5euQVv
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37/n I should also say that I thoroughly dislike opinion pieces and media attention like this The evidence hasn't changed, and quite frankly I think pregnant people have enough to worry about without the fear that a cup of coffee will cause a miscarriage
I always find using the presence of "dose response" as a separator between association and causation odd. Many (most) spurious associations in interval data would have evidence "dose-response". E.g. do birthday parties vs stroke risk? % paternal grey hair and Achondroplasia?
People picking and choosing their Bradford Hill criteria
Do you have thoughts on the association between caffeine and childhood leukaemia, beyond the general problems with case control studies? This was the first I’ve ever heard of a possible link.
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