Problems with the amended version (Version published: 02 October 2019) part I.
I appreciate the efforts made by Cochrane and the authors to correct some of the errors in the previous version of this review. There are however some major problems that remain and significantly impact the results and conclusion. I hope to clarify these in my comments below.I have divided these into two submissions because the text is rather long.All my comments concern the main comparison of graded exercise therapy (GET) versus a passive control condition (treatment as usual or relaxation/flexibility therapy).This is part I.
1) ‘Long-term’ follow-up results downplayed
The review highlights assessments made directly after treatment ended and downplays assessments made several months later even though the latter formed the primary outcome for the trials that provide most of the data.
The authors’ conclusions in the abstract for example states: “Exercise therapy probably has a positive effect…
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