Journal
GAIT & POSTURE
Volume 20, Issue 2, Pages 204-212Publisher
ELSEVIER SCI IRELAND LTD
DOI: 10.1016/j.gaitpost.2003.09.010
Keywords
gait analysis; reliability; confidence band; bootstrap prediction
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Gait analysis studies involve continuous curves of data measured over a gait cycle. Curve analysis and interpretation require adequate statistical methods. Three principal problems may be encountered in clinical practice: (i) the reliability of gait curves for a given patient, (ii) classifying a new subject as belonging to a given population or not and (iii) comparison of two populations (independent or paired). This paper presents three statistical tools for solving these problems: (i) intra-class correlation coefficients, (ii) confidence bands for a population (iii) a combination of analysis of variance and confidence bands for the difference between the means and shows how they can be used in clinical practice. (C) 2003 Published by Elsevier B.V.
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