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StatModeling's profile
Andrew Gelman
Andrew Gelman
Andrew Gelman
@StatModeling

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Andrew Gelman

@StatModeling

andrewgelman.com
Joined November 2010

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    Andrew Gelman‏ @StatModeling 13 Jan 2019
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    How post-hoc power calculation is like a shit sandwich https://statmodeling.stat.columbia.edu/2019/01/13/post-hoc-power-calculation-like-shit-sandwich/ …

    6:30 AM - 13 Jan 2019
    • 80 Retweets
    • 242 Likes
    • Trevor Bihl StatStudent Martin Mayer Yuki Takahashi Peta Hitchens Hause Lin Adam Fraser Jose Hernandez Joey Kwong
    8 replies 80 retweets 242 likes
      1. New conversation
      2. Aleksi Reito‏ @AleksiReito 13 Jan 2019
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        Replying to @StatModeling

        It is over 4 mo since the latest LTEs. Editorial office told that they are still waiting a response from the original authors. 4 months to write a 500 word response... Really?

        1 reply 0 retweets 1 like
      3. Andrew Althouse‏ @ADAlthousePhD 14 Jan 2019
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        Replying to @AleksiReito @StatModeling

        I think they're probably a bit overwhelmed because they didn't realize how wrong they were the first time, and they're either not bothering to reply or not sure how to reply in a way that makes them still feel like they are right.

        1 reply 0 retweets 2 likes
      4. 1 more reply
      1. Angus B. Grieve-Smith‏ @grvsmth 13 Jan 2019
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        Replying to @StatModeling

        Are these even random samples?

        0 replies 0 retweets 0 likes
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      1. gradschool whisperer‏ @TJ__Murphy 13 Jan 2019
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        Replying to @StatModeling

        Somebody had to say it

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      1. The Phlegmfighter‏ @phlegmfighter 13 Jan 2019
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        Replying to @StatModeling

        @learnfromerror and @StatModeling agree on at least one thing!

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      1. Nate Breznau‏ @BreznauNate 14 Jan 2019
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        Replying to @StatModeling

        But a post-hoc calculation of whether or not the study could have recovered a known or theoretical effect size is like a B.L.T.

        0 replies 0 retweets 0 likes
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      1. Peta Hitchens‏ @petaleeh 17 Jan 2019
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        Replying to @StatModeling @mstevenson888

        Timely 😂 @mstevenson888 @ashleighvicmw

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      1. New conversation
      2.  🍀 correct the record‏ @LydiaManiatis 13 Jan 2019
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        Replying to @StatModeling

        As opposed to post hoc what?

        2 replies 0 retweets 0 likes
      3.  🍀 correct the record‏ @LydiaManiatis 16 Jan 2019
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        Replying to @LydiaManiatis @StatModeling

        https://www.wired.com/story/the-exaggerated-promise-of-data-mining/?mbid=social_twitter_onsiteshare …

        0 replies 0 retweets 0 likes
      4. End of conversation
      1. Will Meurer‏ @willmeurer 13 Jan 2019
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        Replying to @StatModeling

        It seems like they have a major problem defining the minimal scientific/clinically important difference (worthwhile treatment effect). And they seem to confuse frequentist power wishfully for a Bayesian predictive probability. Shit sandwiches will lead to shit treatments. #poop

        0 replies 0 retweets 1 like
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