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. 2013 Mar;28(3):418-22.
doi: 10.1016/j.arth.2012.08.026. Epub 2012 Dec 5.

Development of a computer-adaptive version of the forgotten joint score

Johannes M Giesinger  1 , Markus S Kuster, Bernhard Holzner, Karlmeinrad Giesinger
Affiliations

Development of a computer-adaptive version of the forgotten joint score

Johannes M Giesinger et al. J Arthroplasty. 2013 Mar.

Abstract

Patient-reported outcomes (PROs) are an important endpoint in orthopedics providing comprehensive information about patients' perspectives on treatment outcome. Computer-adaptive test (CAT) measures are an advanced method for assessing PROs using item sets that are tailored to the individual patient. This provides increased measurement precision and reduces the number of items. We developed a CAT version of the Forgotten Joint Score (FJS), a measure of joint awareness in everyday life. CAT development was based on FJS data from 580 patients after THA or TKA (808 assessments). The CAT version reduced the number of items by half at comparable measurement precision. In a feasibility study we administered the newly developed CAT measure on tablet PCs and found that patients actually preferred electronic questionnaires over paper-pencil questionnaires.

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Figures

Fig. 1
Fig. 1
Flowchart showing the CAT procedure.
Fig. 2
Fig. 2
Measurement precision and CAT lengths for THA and TKA patients: box plots show median and quartiles for standard error of measurement of individual FJS-CAT scores dependent on number of administered items.
Fig. 3
Fig. 3
Screen shot of the CHES interface for web-based CAT administration.
See this image and copyright information in PMC

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