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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Replying to @sarahdoingthing
But outside of micromanaged big RCTs null results have gotten less common every year http://eloquentscience.com/wp-content/uploads/2012/02/Fanelli12-NegativeResults.pdf …pic.twitter.com/vnTwBRE3V9
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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?
6:45 AM - 10 Dec 2015
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