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Reliable change assessment with practice effects in sport concussion research: a comment on Hinton-Bayre
  1. G H Maassen1,
  2. E R Bossema2,
  3. N Brand3
  1. 1Department of Methodology and Statistics, Utrecht University, Utrecht, the Netherlands
  2. 2Leiden University Medical Center, Leiden, the Netherlands
  3. 3Department of Health Psychology, Utrecht University
  1. Correspondence to:
 Dr Maassen
 Department of Methodology and Statistics, Faculty of Social Sciences, Utrecht University, PO Box 80140, 3508 TC Utrecht, the Netherlands; g.h.maassen{at}fss.uu.nl

Abstract

In his comments on our previous article, Hinton-Bayre advocates the use of the regression based approach in most cases of determining reliable change. This article comments on Hinton-Bayre’s argument, discusses cases where the regression method might not be the preferred method, and presents adjustments that make the method more generally preferable.

  • RCI, reliable change index
  • SEP, standard error of prediction
  • reliable change index
  • difference scores
  • practice effects
  • standard error of measurement of the difference
  • standard error of prediction

http://dx.doi.org/10.1136/bjsm.2005.023713

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Footnotes

  • Published Online First 22 August 2006

  • Competing interests: none declared

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Copyright 2006 British Journal of Sports Medicine