Title: Construct validity of change scores of the Chair Stand Test versus Timed Up and Go test, KOOS questionnaire and the isometric muscle strength test in patients with severe knee osteoarthritis undergoing total knee replacement
Authors : Huber, Erika
Meichtry, André
de Bie, Rob A.
Bastiaenen, Caroline H.
Published in : Manual Therapy
Volume(Issue) : 21
Pages : 262
Pages to: 267
Publisher / Ed. Institution : Elsevier
Issue Date: 2016
License (according to publishing contract) : Licence according to publishing contract
Type of review: Peer review (Publication)
Language : English
Subjects : Chair stand test; Responsiveness; Longitudinal validity; Knee osteoarthritis; Total knee replacement
Subject (DDC) : 615.82: Physical therapy
616.7: Diseases of musculoskeletal system and orthopaedics
Abstract: INTRODUCTION: The Chair Stand Test (CST) is a frequently used performance-based test in clinical studies involving individuals with knee osteoarthritis and demonstrates good reliability. AIM: To assess the construct validity of change scores of the CST compared to three other measures in patients before and after total knee replacement surgery. METHODS: The construct validity of change scores of the CST compared to the Timed Up and Go (TUG) test, the Knee Injury and Osteoarthritis Outcome Score questionnaire (KOOS, subscale ADL) and the isometric muscle strength test of the knee extensors (IMS sum) was measured 1-2 week before and 3 months after surgery. RESULTS: Change (%) CST = -4.45, TUG = -2.08, KOOS ADL = 43.90, IMS sum = -13.24. Correlations CST-TUG = 0.56 (95% confidence interval (CI) 0.29, 0.74), CST-KOOS = -0.31 (95% CI -0.57, 0.01), CST-IMS sum = -0.11 (95% CI -0.42, 0.22). Comparison of pairwise correlations: CST-KOOS versus CST-TUG (p CONCLUSION: For patients undergoing TKR, the CST might not be an ideal measure to assess change between pre-surgery and 3 months post-surgery. Construct validity of change scores was close to zero but the result might have been influenced by the relatively small homogeneous sample size and the chosen timespan of measurement. We ordered pairwise correlations based on the strength of correlation between the different instruments, which to our knowledge has never been done before.
Departement: Gesundheit
Organisational Unit: Institute of Physiotherapy (IPT)
Publication type: Article in scientific Journal
DOI : 10.1016/j.math.2015.09.012
ISSN: 1356-689X
URI: https://digitalcollection.zhaw.ch/handle/11475/8300
Appears in Collections:Publikationen Gesundheit

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