Psychometric properties of the Czech versionof the nine-item European heart failureself-care behaviour scale

Aim. To assess validity and reliability of the Czech version of the European Heart Failure Self-Care Behaviour Scale (EHFScBS-9). Material and methods. 130 Czech heart failure (HF) patients accomplished the EHFScBS-9 and the Cardiac Self-Efficacy Questionnaire (CSEQ). Linguistic validation was performed. Item analysis, confirmatory factor analysis, and convergent validity were evaluated. Reliability was calculated by Cronbach’s alpha. Results. Based on fit criteria for the confirmatory factor analysis models, the results pointed to good fit for the two-factor model (χ2 = 40.59, p = 0.013; RMSEA = 0.077; CFI = 0.972; TLI = 0.956; GFI = 0.937), respectively for the three-factor solution (χ2 = 38.24, p = 0.017; RMSEA = 0.076; CFI = 0.974; TLI = 0.957; GFI = 0.943) of the Czech EHFScBS-9. Convergent validity was confirmed on the basis of a significant correlation (r = 0.31, p = 0.001) between the Czech EHFScBS-9 (standardised score) and the CSEQ. Internal consistency was confirmed by Cronbach’s alpha values for the whole instrument (0.84), as well as for “Consulting behaviour” subscale (0.90). The reliability of “adherence behaviours” subscale was questionable (0.59). Conclusions. The Czech version of the EHFScBS-9 is a valid and reliable instrument for measuring self-care behaviour in HF patients. Keywords: confirmatory factor analysis, European Heart Failure Self-Care Behaviour Scale – 9, reliability, validity