Abstract
Self-efficacy is a relevant factor during rehabilitation after total hip or knee arthroplasty. Research was done into the reliability and validity of a Dutch translation of the Self-Efficacy for Rehabilitation Outcome Scale (SER). One hundred and forty-one persons filled in the SER questionnaire and the Self-Efficacy Expectation Scale (SES) as a control scale. Research was done into reliability and into construct- and criterion-related validity. Factor analysis yielded two factors. Pearson's correlation between the two factors was 0.61 ( P < 0.01). To assess criterion-related validity, the Pearson's correlation coefficient was calculated between the sum score of the SER and the SES. The scales had a correlation of 0.62 ( P < 0.01). Internal consistency resulted in a Cronbach's coefficient alpha of 0.94 for the entire SER scale, and 0.94 and 0.87 for the first and second factors. It is concluded that for the time being the Dutch version of the SER can be considered a reliable and valid questionnaire.
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