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GidMK's profile
Health Nerd
Health Nerd
Health Nerd
Verified account
@GidMK

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Health NerdVerified account

@GidMK

Epidemiologist. Writer (Guardian, Observer etc). "Well known research trouble-maker". PhDing at @UoW Host of @senscipod Email gidmk.healthnerd@gmail.com he/him

Sydney, New South Wales
theguardian.com/profile/gideon…
Joined November 2015

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    1. Health Nerd‏Verified account @GidMK 29 Apr 2018

      This is truly amazingly bad reporting on what can only be described as a preliminary, exploratory epidemiological study No, your cell phone isn't trying to kill youpic.twitter.com/HhFVzDizvF

      1 reply 0 retweets 3 likes
      Show this thread
    2. Health Nerd‏Verified account @GidMK 29 Apr 2018

      What did this study actually find? Virtually NOTHING AT ALL

      1 reply 0 retweets 1 like
      Show this thread
    3. Health Nerd‏Verified account @GidMK 29 Apr 2018

      Here's a link to the study https://ehp.niehs.nih.gov/EHP1837/#c15  If you scroll on down to the results section...pic.twitter.com/zHST9JdudR

      1 reply 0 retweets 1 like
      Show this thread
    4. Health Nerd‏Verified account @GidMK 29 Apr 2018

      "What's that Gid?" "Oh, not much. Just ~40 non-corrected statistical tests of which 3 were significant" "Wow! That really doesn't sound like much, does it?"pic.twitter.com/AFviAernwN

      1 reply 0 retweets 1 like
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    5. Health Nerd‏Verified account @GidMK 29 Apr 2018

      Here they are, highlighted. I should also mention that most of these were ~barely~ significantpic.twitter.com/AhFNUDyxbZ

      1 reply 0 retweets 1 like
      Show this thread
    6. Health Nerd‏Verified account @GidMK 29 Apr 2018

      Let's zoom in on one number that is in EVERY GODDAM ARTICLE The "1.5 times higher risk of breast cancer and twofold higher risk of prostate cancer" Total. Utter. Nonsense.pic.twitter.com/qH8WOonrFz

      2 replies 0 retweets 1 like
      Show this thread
    7. Health Nerd‏Verified account @GidMK 29 Apr 2018

      To do this, we have to quickly go over confidence intervals

      1 reply 0 retweets 1 like
      Show this thread
      Health Nerd‏Verified account @GidMK 29 Apr 2018

      When we compute a confidence interval, we are basically saying that there's a decent chance that the true value lies between 2 points

      8:58 PM - 29 Apr 2018
      • 1 Like
      • Jose Manuel
      1 reply 0 retweets 1 like
        1. New conversation
        2. Health Nerd‏Verified account @GidMK 29 Apr 2018

          If the confidence interval crosses 1, it means that there's no statistical difference between the result and what we'd expect to find purely by chance If the confidence interval is very wide, it means that there is so much variance in the result that it might not be true anyway

          1 reply 0 retweets 1 like
          Show this thread
        3. Health Nerd‏Verified account @GidMK 29 Apr 2018

          These are the tests behind that headline. Confidence intervals are in the little red squares Notice anything strange?pic.twitter.com/HU0a4dOFAE

          1 reply 0 retweets 1 like
          Show this thread
        4. Health Nerd‏Verified account @GidMK 29 Apr 2018

          The first one is 1.00-2.17 That is ~technically~ significant, but really only just. This is likely to be a meaningless result

          1 reply 0 retweets 1 like
          Show this thread
        5. Health Nerd‏Verified account @GidMK 29 Apr 2018

          The second is 1.38-3.03. This is a more robust result, but it's still bordering on insignificance given the sample size

          1 reply 0 retweets 1 like
          Show this thread
        6. Health Nerd‏Verified account @GidMK 29 Apr 2018

          So the headline finding, the one that is being used to scare everyone about how terrifying light is... ...probably isn't true And it gets worse

          1 reply 0 retweets 1 like
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        7. Health Nerd‏Verified account @GidMK 29 Apr 2018

          This is the conclusion. It's the closest you can get to saying "we found nothing at all" without actually coming out and saying itpic.twitter.com/sRD9NO3Pgb

          1 reply 0 retweets 1 like
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        8. Health Nerd‏Verified account @GidMK 29 Apr 2018

          Note to journalists: when a scientists hedges this much in a conclusion, there's a good chance the findings were not significant at allpic.twitter.com/Uahhl1pLvS

          0 replies 0 retweets 1 like
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        9. End of conversation

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