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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 7 Jul 2019

      The reporting on this study is so wrong it's funny It was a cross-sectional online survey that demonstrated precisely zero causal relationships and only really hinted that there ~might~ be some relationship between phones and bangingpic.twitter.com/BpVlW0yzY3

      2 replies 1 retweet 6 likes
      Show this thread
    2. Health Nerd‏Verified account @GidMK 7 Jul 2019

      Here's the studyhttps://akademiai.com/doi/full/10.1556/2006.8.2019.32 …

      1 reply 0 retweets 2 likes
      Show this thread
    3. Health Nerd‏Verified account @GidMK 7 Jul 2019

      Basically, the researchers recruited a bunch of university students via email to log into an online survey about their phone use and other behaviours/academic performancepic.twitter.com/eBI34gTE4x

      1 reply 0 retweets 1 like
      Show this thread
      Health Nerd‏Verified account @GidMK 7 Jul 2019

      Of the people who responded, 3,425 completed all the surveys and could be included in the study (side-note: there's a typo in the abstract)pic.twitter.com/chqRAEjUbh

      9:08 PM - 7 Jul 2019
      • 1 Like
      • A pointy reckoning
      1 reply 0 retweets 1 like
        1. New conversation
        2. Health Nerd‏Verified account @GidMK 7 Jul 2019

          The study then dichotomized (made into two groups) the participants by whether they used their phones "problematically" or not - something of a subjective diagnosis, but not too badpic.twitter.com/dZ4cfam3Ou

          1 reply 0 retweets 1 like
          Show this thread
        3. Health Nerd‏Verified account @GidMK 7 Jul 2019

          They then ran a series of comparisons looking at whether the problematic users were different from non-problematic users They found that problematic users had worse grades, more alcohol abuse (just), and banged more people on average

          1 reply 0 retweets 1 like
          Show this thread
        4. Health Nerd‏Verified account @GidMK 7 Jul 2019

          The thing is, this study has ~dozens~ of limitations/drawbackspic.twitter.com/RtraFjOk6L

          1 reply 0 retweets 1 like
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        5. Health Nerd‏Verified account @GidMK 7 Jul 2019

          For one thing, the sample is hopelessly biased. Think about university students who'll willingly do a 156-question survey for free online instead of literally anything else

          1 reply 0 retweets 1 like
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        6. Health Nerd‏Verified account @GidMK 7 Jul 2019

          Then, think about what happens if you only include the people who answer every question. That's taking a biased sample to a whole new level

          1 reply 0 retweets 3 likes
          Show this thread
        7. Health Nerd‏Verified account @GidMK 7 Jul 2019

          It's also cross sectional in design, which means that people just answered a single survey, and there was absolutely no control for confounding That means you can't infer any causality whatsoeverpic.twitter.com/bM2UtCekgW

          1 reply 0 retweets 1 like
          Show this thread
        8. Health Nerd‏Verified account @GidMK 7 Jul 2019

          Does mobile phone use cause banging? Does banging cause mobile phone use? Does heavy alcohol use, or some third unmeasured thing, cause both? We have absolutely no ideapic.twitter.com/I9cwpmUPaf

          1 reply 0 retweets 0 likes
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        9. Health Nerd‏Verified account @GidMK 7 Jul 2019

          This type of study is great in that it is easy to do and very cheap, but it's bad in that the information you can take home from it is virtually nothing at all

          1 reply 0 retweets 1 like
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        10. Health Nerd‏Verified account @GidMK 7 Jul 2019

          In other words, what this study showed is that, in a highly self-selected group of university students, using smartphones a bunch was slightly correlated with poor health

          1 reply 0 retweets 2 likes
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        11. Health Nerd‏Verified account @GidMK 7 Jul 2019

          If that sounds like a boring, slightly meaningless finding, that's because IT IS

          1 reply 0 retweets 4 likes
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        12. Health Nerd‏Verified account @GidMK 7 Jul 2019

          Especially when you consider that "problematic" smartphone users answered yes to questions like these...pic.twitter.com/BilLivbXgO

          2 replies 0 retweets 0 likes
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        13. Health Nerd‏Verified account @GidMK 7 Jul 2019

          News sites love studies bagging out smartphones, because they're still new and scary, but it still seems pretty unlikely that they're actually causing people to get laid/depressed/alcoholism

          1 reply 0 retweets 1 like
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        14. End of conversation

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