In large clinical trials, null results increased dramatically after preregistration became a thing - from 43% to 92% http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0132382h …
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If you go by the guideline of statistical power of .8 wouldn't your predictions have to be perfect (or better) to get 80% positive results?
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@sarahdoingthing the better angels of our NatureThanks. Twitter will use this to make your timeline better. UndoUndo
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