Phoenix Rising: The Gift That Keeps on Giving All Year Long
This holiday season Jody Smith turns her eyes to the people of Phoenix Rising and gives thanks for you all ...
Discuss the article on the Forums.

A Comparison of Case Definitions for Myalgic Encephalomyelitis and Chronic Fatigue Syndrome

Discussion in 'Latest ME/CFS Research' started by Dolphin, Jul 20, 2017.

  1. Dolphin

    Dolphin Senior Member

    Messages:
    10,574
    Likes:
    27,659
     
    Sean, ScottTriGuy and mango like this.
  2. hixxy

    hixxy Senior Member

    Messages:
    1,103
    Likes:
    1,262
    Australia
    The London criteria eliminates everyone that doesn't have viral onset so of course it's going to be more narrow.
     
  3. Dolphin

    Dolphin Senior Member

    Messages:
    10,574
    Likes:
    27,659
    I find it hard to understand why one type of symptom has to be of at least moderate severity while other types of symptom only have to be of mild severity.

    I'm left wondering whether these thresholds might have been decided after looking at the data.

    Leonard Jason based on past experience uses "of at least moderate severity" when he is operationalising criteria but in this case they said the decision was made by Ellen Goudsmit.

    They are free if they want to use the threshold "all of the time" for the symptoms but Leonard Jason doesn't use this for his other criteria. I remain to be convinced it is the best way to define ME and so am not confident that the data in this study is in any way definitive.

    The authors themselves say:
     
    lilpink and Valentijn like this.
  4. Dolphin

    Dolphin Senior Member

    Messages:
    10,574
    Likes:
    27,659
    I remain to be convinced that these differences are that reliable and instead could be due to the different thresholds use for the two criteria as I mentioned in the last comment.
     
    Valentijn likes this.
  5. Dolphin

    Dolphin Senior Member

    Messages:
    10,574
    Likes:
    27,659
    Some limitations the authors mention:
     

See more popular forum discussions.

Share This Page