Validity and reliability of the Russian version of the second version of “the Coronary Artery Disease Education Questionnaire” (CADE-Q II) in patients with chronic coronary syndromes

Abstract

Aim. Validation and evaluation of psychometric parameters of the Russian-language version of the Coronary Artery Disease Education Questionnaire II (CADE-Q II) in patients with chronic coronary syndromes (CCSs).Material and methods. The study involved 303 patients with stable coronary artery disease (CAD) who were hospitalized in the cardiology department in April-November 2021. All patients admitted underwent a standard examination and treatment, adopted in the management of patients with CCSs. In addition, we analyzed socio-demographic parameters (marital status, education level, occupation, disability, income level), quality of life (using SF-36 and SAQ questionnaires), levels of anxiety and depression (HADS scale), personality type D (DS-14 questionnaire), adherence to treatment (four-item Morisky-Green Medication Adherence Scale), Charlson comorbidity index, The Self Care of Coronary Heart Disease Inventory (SC-CHDI), and CADE-Q II. The validation process of new questionnaire was carried out in several stages as follows: translation, pilot testing, reliability assessment, constructive and criterion validity assessment.Results. Test-retest reliability of the questionnaire’s scales was 0,81, while Cronbach’s alpha varied from 0,613 to 0,877, which indicates its sufficient reliability. The confirmatory factor analysis confirmed the correspondence of the obtained model to the experimental one. The criteria validity of the questionnaire revealed correlation between the scales with the level of patient’s general education (r=0,391, р<0,01), “selfcare confidence” scale of the SC-CHDI (r=0,251, р<0,05), “Vitality” component of the SF-36 (r=0,225-0,284, р<0,05), “Mental Health” component of the SF-36 (r=0,308, р<0,01). In addition, a weak negative relationship was found between the blocks “Physical exercises” and “Psychosocial risks” with age (r=-0,237, p<0.05 and r=-0,229, p<0.05, respectively).Conclusion. The Russian-language version of the CADE-Q II has sufficient psychometric indicators and is a valid tool for assessing the self-care ability of patients with CAD.