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  • Title: Psychometric properties of the Korean version of the Pulmonary Rehabilitation Adapted Index of Self-Efficacy (PRAISE) for individuals with COPD.
    Author: Song HY, Nam KA.
    Journal: Int J Chron Obstruct Pulmon Dis; 2017; 12():2611-2620. PubMed ID: 28919729.
    Abstract:
    PURPOSE: Self-efficacy is related to the emotional functioning and coping skills of an individual and is thought to be a predictor of health behaviors, which are particularly important for pulmonary rehabilitation (PR). To our knowledge, no measure of self-efficacy has been validated to explore behavior changes in the context of PR for patients with COPD in Korea. This study aimed to evaluate the psychometric properties of the Korean version of the Pulmonary Rehabilitation Adapted Index of Self-Efficacy (PRAISE). PATIENTS AND METHODS: The original scale, developed and validated by Vincent et al was translated into Korean through a process involving forward and back translation of the original scale, and transcultural adaptation was performed following the structured procedure. Content validity was assessed by a panel of 6 expert judges. In a convenience sample of 118 patients with COPD, exploratory factor analysis using principal axis factoring, followed by oblique rotation was conducted to identify construct validity, and the concurrent validity was evaluated by testing correlations between the PRAISE and 6-minute walking distance test and the PRAISE and Saint George Respiratory Questionnaire results. Internal consistency was examined by calculating Cronbach's alpha coefficients. RESULTS: Exploratory factor analysis confirmed the 2-dimensional structure of the scale constructed from the original 15-item scale. The final scale was composed of 14 items that cumulatively explained 60.3% of the total variance. The 2 factors in the scale were named "general self-efficacy" and "exercise self-efficacy." Significant correlations between the PRAISE, and 6-minute walking distance test and Saint George Respiratory Questionnaire showed the concurrent validity of the PRAISE. The Cronbach's alpha coefficient of the PRAISE was 0.93. CONCLUSION: The Korean version of the PRAISE showed adequate construct validity and reliability. These results suggest that the PRAISE is suitable for use in clinical settings as a predictor of PR behavior in Korean patients with COPD.
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