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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 3 Sep 2018
      Replying to @WeDietitians

      Sure. This is the practical application of a theoretical construct. You can decide that a certain grade of evidence is not sufficient - against the NHMRC recommendations - but applying it inconsistently makes no sense. You should apply it to all areas of evidence

      1 reply 0 retweets 0 likes
    2. Health Nerd‏Verified account @GidMK 3 Sep 2018
      Replying to @GidMK @WeDietitians

      The level of evidence for tobacco-related harms is never above Grade C (perhaps Grade B in some very specific cases), because you cannot run an RCT on cigarette smoking. Similarly with mesothelioma and seatbelts

      1 reply 0 retweets 0 likes
    3. Health Nerd‏Verified account @GidMK 3 Sep 2018
      Replying to @GidMK @WeDietitians

      So if you reject all Grade C evidence, which is, I would argue, a methodologically unsound method of evidence appraisal, you should similarly be demanding furiously the RCT evidence that cigarettes cause harm and that asbestos is bad

      1 reply 0 retweets 0 likes
    4. We Dietitians‏ @WeDietitians 3 Sep 2018
      Replying to @GidMK

      Is the evidence for cigs causation or association?

      2 replies 0 retweets 0 likes
    5. Health Nerd‏Verified account @GidMK 3 Sep 2018
      Replying to @WeDietitians

      As I said, it's Grade C The point being that Grade C evidence can be and is used to inform policy decisions

      1 reply 0 retweets 0 likes
    6. We Dietitians‏ @WeDietitians 3 Sep 2018
      Replying to @GidMK

      Right ok - so you’re saying all Grade C is equal? And I guess “at a glance” it could be. So let’s just take that as is for a moment. The next step is, is Grade C enough evidence to instruct a population? You say “yes we do it all the time”.

      2 replies 0 retweets 0 likes
    7. We Dietitians‏ @WeDietitians 3 Sep 2018
      Replying to @WeDietitians @GidMK

      “Telling people what to eat” can have adverse outcomes. We don’t know what they are bc we’ve not looked. But an observation of a relationship between “number of years with ADG and rates of diabetes”pic.twitter.com/2eEc2q7m44

      1 reply 0 retweets 0 likes
    8. We Dietitians‏ @WeDietitians 3 Sep 2018
      Replying to @WeDietitians @GidMK

      What is an adverse outcome from a person wearing their seatbelt? From avoiding asbestos? Etc. People don’t HAVE to smoke to survive. Nor do people have to drive a car to survive. Food is needed for survival. It’s in the “human right” list.

      2 replies 0 retweets 0 likes
    9. Health Nerd‏Verified account @GidMK 3 Sep 2018
      Replying to @WeDietitians

      None of that has the slightest bearing on whether Grade C evidence can or should be used to inform policy

      1 reply 0 retweets 0 likes
    10. We Dietitians‏ @WeDietitians 3 Sep 2018
      Replying to @GidMK

      Ok, maybe I’ll try to explain differently... You are saying “yes GRADE C is enough to instruct a population what to do bc that’s what we’ve always done”. I’m saying “is GRADE C evidence enough to instruct populations what to eat given

      2 replies 0 retweets 0 likes
      Health Nerd‏Verified account @GidMK 4 Sep 2018
      Replying to @WeDietitians

      No. I'm saying that there are compelling reasons to use Grade C evidence in guidelines, as outlined by the NHMRC And that you AGREE with this wrt smoking etc So using Grade C evidence as a critique makes no sense

      12:13 AM - 4 Sep 2018
      1 reply 0 retweets 0 likes
        1. We Dietitians‏ @WeDietitians 4 Sep 2018
          Replying to @GidMK

          What are the compelling reasons? Who decides? On balance with harm? On balance with doing nothing?

          0 replies 0 retweets 0 likes
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