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Test-retest of computerized health status questionnaires frequently used in the monitoring of knee osteoarthritis: a randomized crossover trial

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ABSTRACT: BACKGROUND: To compare data based on touch screen to data based on traditional paper versions of questionnaires frequently used to examine patient reported outcomes in knee osteoarthritis patients and to examine the impact of patient characteristics on this comparison METHODS: Participants were recruited from an ongoing trial (ClinicalTrials.Gov Identifier: NCT00655941). 20 female participants, mean age 67 (SD 7), completed KOOS, VAS pain, function and patient global, SF-36, Physical Activity Scale, painDETECT, and the ADL Taxonomy. Patients were randomly assigned to one of two subgroups, completing either the paper or touch screen version first. Mean, mean differences (95% CI), median, median differences and Intraclass Correlation Coefficients (ICCs) were calculated for all questionnaires. RESULTS: ICCs between data based on computerized and paper versions ranged from 0.86 to 0.99. Analysis revealed a statistically significant difference between versions of the ADL Taxonomy, but not for the remaining questionnaires. Age, computer experience or education-level had no significant impact on the results. The computerized questionnaires were reported to be easier to use. CONCLUSION: The computerized questionnaires gave comparable results to answers given on paper. Patient characteristics did not influence results and implementation was feasible.
Original languageEnglish
JournalB M C Musculoskeletal Disorders
Volume12
Issue number1
Pages (from-to)190
ISSN1471-2474
DOIs
Publication statusPublished - 18 Aug 2011

ID: 32473799