Evaluation of psychometric properties of Walking Impairment Questionnaire in overweight patients with osteoarthritis of knee | Zendy

Eileen G. Collins | Zendy; Susan O’Çonnell | Zendy; Christine Jelinek | Zendy; Scott Miskevics | Zendy; Elly BudimanMak | Zendy

Open Access

Evaluation of psychometric properties of Walking Impairment Questionnaire in overweight patients with osteoarthritis of knee

Author(s) -

Eileen G. Collins,

Susan O’Çonnell,

Christine Jelinek,

Scott Miskevics,

Elly BudimanMak

Publication year - 2008

Publication title -

the journal of rehabilitation research and development

Language(s) - English

Resource type - Journals

eISSN - 1938-1352

pISSN - 0748-7711

DOI - 10.1682/jrrd.2007.04.0053

Subject(s) - cronbach's alpha , physical therapy , overweight , reliability (semiconductor) , medicine , internal consistency , osteoarthritis , test (biology) , psychometrics , physical medicine and rehabilitation , psychology , body mass index , clinical psychology , alternative medicine , paleontology , power (physics) , physics , pathology , quantum mechanics , biology

This study tested the psychometric properties of the Walking Impairment Questionnaire (WIQ) in overweight patients with osteoarthritis (OA) of the knee. Internal consistency, test-retest reliability, and concurrent validity of the WIQ were measured. Used in a randomized clinical trial, the WIQ was one of the instruments completed by overweight adults with OA of the knee. A total of 105 patients completed the WIQ. Internal consistency of the WIQ was supported in this population with a Cronbach alpha total score of 0.97. Test-retest reliability scores were not different when subjects completed the WIQ 14 days apart (p > 0.05). The relationships were moderate between the WIQ subscales and other established measures, such as the 6-minute walk distance, stair climb and descend, and the Western Ontario and McMaster Universities (OA Index) questionnaire. After evaluating the psychometric properties of the WIQ, we found that it is a valid and reliable instrument to use in overweight patients with symptomatic OA of the knee.

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