Psychometric Evaluation of the Turkish Version of the Control Attitudes Scale-Revised for Heart Disease.

OBJECTIVE: Perceived control is an important issue that needs to be addressed in patient groups with chronic diseases where self-management plays a critical role. Patients with a high perception of control demonstrate greater success in symptom management and adaptation to chronic illness. METHOD: This methodological adaptation study was conducted to investigate the psychometric properties of the Control Attitudes Scale-Revised in Turkish patients with heart failure. In the reliability analysis of the scale, Cronbach's alpha was used to determine internal consistency, and item homogeneity was assessed using item-total and item-item correlations. For validity testing, confirmatory factor analysis, hypothesis testing for known relationships, discriminant validity, and test-retest reliability were applied. RESULTS: Confirmatory factor analysis (CFA) of the scale demonstrated supportive fit indices for the original Control Attitudes Scale-Revised (CAS-R) single-factor structure (P < 0.001 for all items). The Cronbach's alpha reliability coefficient of the Turkish version of the Control Attitudes Scale-Revised (TCAS-R) scale was found to be 0.99. In the hypothesis test used for construct validity, a moderate positive relationship (r = 0.568, P < 0.05) was found between the Turkish version of the Control Attitudes Scale-Revised and the nine-item European Heart Failure Self-Care Scale. CONCLUSION: Based on these results, it can be concluded that the Turkish version of the Control Attitudes Scale-Revised is a valid and reliable tool for use with Turkish patients. The findings are expected to be useful for both healthcare professionals and patients.