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document
Clinical evaluation of the WOMAC 3.0 OA Index in numeric rating scale format using a computerized touch screen version . BACKGROUND The Western Ontario and McMaster Universities ( WOMAC ) Osteoarthritis Index is a previously described self-administered questionnaire covering three domains : pain , stiffness and function . It has been validated in patients with osteoarthritis ( OA ) of the hip or knee in a paper-based format . AIM To validate the WOMAC 3.0 using a numerical rating scale in a computerized touch screen format allowing immediate evaluation of the questionnaire . In the computed version cartoons , written and audio instruments were included in order facilitate application . METHODS Fifty patients , demographically balanced , with radiographically proven primary hip or knee OA completed the classical paper and the new computerized WOMAC version . Subjects were randomized either to paper format or computerized format first to balance possible order effects . RESULTS The intra-class correlation coefficients for pain , stiffness and function values were 0.915 , 0.745 and 0.940 , respectively . The Spearman correlation coefficients for pain , stiffness and function were 0.88 , 0.77 and 0.87 , respectively . CONCLUSION These data indicate that the computerized WOMAC OA index 3.0 is comparable to the paper WOMAC in all three dimensions . The computerized version would allow physicians to get an immediate result and if present a direct comparison with a previous exam .
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Intervention_Educational
computerized touch screen version
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Intervention_Educational
classical paper
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Intervention_Educational
new computerized WOMAC version
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Intervention_Educational
computerized version
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Outcome_Pain
pain , stiffness and function .
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Outcome_Pain
pain , stiffness and function values
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Outcome_Pain
pain , stiffness and function
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Participant_Condition
osteoarthritis
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Participant_Condition
OA
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Participant_Sample-size
Fifty
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Participant_Condition
radiographically proven primary hip or knee OA