Abstract
A recently developed computerized Animated Activity Questionnaire (AAQ) uses video animations to measure limitations in basic daily activities in patients with hip or knee osteoarthritis (OA). The AAQ is less time and money consuming than performance-based tests and less burdensome for patients. Compared to patient-reported outcome measurements, the AAQ is less influenced by the perception of the patient. Previous validation studies of the AAQ showed promising results. Since the AAQ purports to measure activity limitations in real-life situations, this study aims to establish the construct validity of the AAQ by comparing the AAQ to home-recorded videos. Home-recorded videos of eleven basic activities performed by 22 OA patients were transformed into scores and subsequently correlated with the AAQ, the Hip disability and Knee injury Osteoarthritis Outcome Score (H/KOOS), and three performance-based tests (Stair Climbing Test, Timed Up and Go test, and the 30 s Chair Stand Test). The AAQ was expected to correlate highly with the home-recorded videos and the performance-based tests, and moderately with the H/KOOS. As hypothesized, the AAQ correlated highly with the home-recorded videos and performance-based tests (0.83 and, 0.73 respectively), but also unexpectedly highly with the H/KOOS (0.79). In conclusion, since the AAQ correlates highly with home-recorded videos, it seems to have potential as a measurement tool to assess limitations in activities close to the real-life situation, but this should be confirmed in a larger sample of patients.
Highlights
Osteoarthritis (OA) is the most prevalent chronic joint disease worldwide, and one of the leading causes of disability and activity limitations in daily life [1, 2]
patient-reported outcome measures (PROMs) rely on self-report and measure the experienced degree of difficulty in performing daily activities
An earlier study focused on a comparison of the Animated Activity Questionnaire (AAQ) with performance-based tests and selfreported questionnaires [17]
Summary
Osteoarthritis (OA) is the most prevalent chronic joint disease worldwide, and one of the leading causes of disability and activity limitations in daily life [1, 2]. An essential key in the management of hip and knee OA is a comprehensive assessment of physical limitations in daily activities [3]. We would like to measure the level of performance of activities in daily life such as a person’s home situation. There are two types of alternative measurements: patient-reported outcome measures (PROMs) and performance-based tests, which are both recommended to assess the patients’ level of activity limitations [4, 5]. PROMs rely on self-report and measure the experienced degree of difficulty in performing daily activities. They are considered easy to implement, inexpensive, and harmless for the patient. PROMs are highly subjective to the perception of the term difficulty
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