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

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.

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.

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.

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.