Comments Submitted to the Cochrane Review of Exercise Therapy for Chronic Fatigue Syndrome

Submissions by Robert Courtney to the 2016 Cochrane Review of Exercise Therapy for Chronic Fatigue Syndrome.

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In response to:
Cochrane Database of Systematic Reviews.
Larun L, Brurberg KG, Odgaard-Jensen J, Price JR.
Exercise therapy for chronic fatigue syndrome.
Cochrane Database Syst Rev. 2016; CD003200.

See a list of all versions of the Cochrane review, here:

Update: The latest version of the Cochrane review (version 5) includes the first two letters (listed below), and the reviewers' responses to them, and can be seen here:

The submissions, listed below, are in response to a previous version of the Cochrane review (version 4) which can be seen here. (The latest version differs only in that it includes copies of the first two letters, listed below, but there are no other amendments.)


1. Query re use of post-hoc unpublished outcome data: Scoring system for the Chalder fatigue scale, Wearden 2010.
Robert Courtney
16th April 2016

2. Assessment of Selective Reporting Bias in White 2011.
Robert Courtney
1st May 2016

3. A query regarding the way outcomes for physical function and overall health have been described in the abstract, conclusion and discussions of the review.
Robert Courtney
12th May 2016
4. Concerns regarding the use of unplanned primary outcomes in the Cochrane review.
Robert Courtney
3rd June 2016