The PACE trial in chronic fatigue syndrome/Authors' reply
The source for this defi nition of clinically useful diff erence states that such a method has a "fundamental limitation": "estimates of variability will diff er from study to study...if one chooses the between-patient standard deviation, one has to confront its dependence on the hete...
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Veröffentlicht in: | The Lancet (British edition) 2011-05, Vol.377 (9780), p.1831 |
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Hauptverfasser: | , , , , , , , , , , , , , , , , , , , , |
Format: | Artikel |
Sprache: | eng |
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