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Feasibility and validity of self-reported walking capacity in patients with intermittent claudication

Abstract :

OBJECTIVE: The primary aim of this study was to assess if self-reported measures of walking limitation correlate better with a community-based assessment of maximum walking distance (MWD) than they do with laboratory-based tests in patients with intermittent claudication. A secondary aim was to examine the effect of prior objective testing on these correlations. METHODS: Thirty-one patients completed three self-report tools (self-reported MWD; Walking Impairment Questionnaire [WIQ]; Estimation of Ambulatory Capacity by History-Questionnaire [EACH-Q]) immediately before and approximately 1 week after a series of objective tests (incremental treadmill walking test, 6-minute walk test, 1-hour global positioning system [GPS] recording of a community walk). We analyzed the feasibility of the self-report tools in terms of number of errors and their correlation (r) with objective measures. RESULTS: The correlations of self-report tests to GPS-MWD (range, .579-.808) were consistently higher than with the treadmill test (range, .310-.584) and 6-minute walk test (range, .414-.613). The WIQ had the highest proportion of errors, both at first and second completion (58% and 42%, respectively), compared with self-reported MWD (23% and 13%, respectively) and the EACH-Q (6.5% and 13%, respectively). Correlations were improved with the second set of self-report tests (range, .310-.595 to .414-.808). CONCLUSIONS: The fact that all self-report tools correlated better with a community-based measure of MWD using GPS than with laboratory results confirms that they measure what they aim to: community-based MWD. In addition, prescription of a community walk might help patients to better estimate their walking limitation.

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Soumis le : mardi 26 octobre 2021 - 14:02:17
Dernière modification le : mardi 23 août 2022 - 11:04:25

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G. Tew, R. Copeland, A. Le Faucheur, Marie Gernigon, Shah Nawaz, et al.. Feasibility and validity of self-reported walking capacity in patients with intermittent claudication. Journal of Vascular Surgery, Elsevier, 2013, 57 (5), pp.1227 - 34. ⟨10.1016/j.jvs.2012.02.073⟩. ⟨hal-03403990⟩



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