Reliability of the Animated Activity Questionnaire for assessing activity limitations of patients with hip and knee osteoarthritis

Musculoskeletal Care
W F PeterC B Terwee

Abstract

The aim of the study was to determine the internal consistency, test-retest reliability and measurement error of the Animated Activity Questionnaire (AAQ) for assessing activity limitations in hip and knee osteoarthritis (HKOA) patients. A total of 1,177 patients, from six countries (the Netherlands, UK, France, Denmark, Italy and Spain), completed the AAQ, a questionnaire consisting of videos displaying 17 activities with 3-5 levels of performance, from which patients choose the video that best matches their own performance. Unidimensionality was assessed by means of confirmatory factor analysis (CFA), using the following fit indices: the Tucker-Lewis index (TFI) >0.95, comparative fit index (CFI) >0.95, and root mean square error of approximation (RMSEA) <0.06. Cronbach's alpha was computed. In 238 patients who completed the AAQ twice, the intra-class correlation coefficient (ICC) was calculated for test-retest reliability. The standard error of measurement (SEM) and the smallest detectable change (SDC) were calculated as parameters of measurement error. The fit indices for unidimensionality were CFI 0.957, TLI 0.950, and RMSEA 0.144. Cronbach's alpha was 0.95. ICC for test-retest reliability was 0.93 (95% confidence interval...Continue Reading

References

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Oct 18, 2016·Arthritis Care & Research·Wilfred F PeterCaroline B Terwee

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Citations

May 21, 2018·Biomolecular Concepts·Justin C KennonSadanand Fulzele
Aug 17, 2020·BMC Musculoskeletal Disorders·Lichelle GrootUNKNOWN PaTIO study group
Jul 13, 2021·Brazilian Journal of Physical Therapy·Clarissa Daniela do NascimentoAlessandra de Carvalho Bastone

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