Abstract
BackgroundEvaluating knowledge in patients with coronary artery disease requires a specific measure. The aim of the present study was to translate and evaluate the CADE-Q in patients with coronary artery disease in Iran.MethodsForward-backward procedure was applied to translate the questionnaire from English into Persian. Then a cross-sectional study was conducted to evaluate psychometric properties of the questionnaire. A sample of patients with coronary artery disease attending to cardiac departments of teaching hospitals affiliated to medical universities in Tehran, Iran completed the 19-item CADE-Q from April to December 2017. Structural validity of CADE-Q was assessed using both exploratory and confirmatory factor analyses. Reliability was examined using Cronbach’s alpha coefficient. Stability was evaluated by estimation intraclass correlation coefficient.ResultsIn all 500 patients participated in the study. The mean age of patients was 53.63. (SD = 14.36) years, and 57% were male. The results obtained from the exploratory factor analysis showed a four factor solution (lifestyle habits and exercise, risk factors, diagnosis and treatment, signals & symptoms and medicine) that jointly explained 48.9% of the total variance observed. However, the second-order confirmatory factor analysis supported the three-factor solution while convergent and divergent validity were not confirmed. Finally, the Cronbach’s alpha coefficient of 0.84 ranging from 0.50 to 0.82 was obtained for the scale and its subscales. In addition, the ICC value of 0.88 showed satisfactory stability for the questionnaire.ConclusionThe Coronary Artery Disease Education Questionnaire was found to be a multidimensional instrument. The results confirmed the factor structure of the questionnaire with a second-order analysis. Since the convergent and divergent validity of the scale were not confirmed, further assessment is essential to establish fitness of the questionnaire in Iran.
Highlights
Evaluating knowledge in patients with coronary artery disease requires a specific measure
The cardiac rehabilitation programs consist of a set of interventions ranging from physical activity, exercise training, post-operative patient care, the optimization of medical treatment, nutritional counseling, smoking cessation, risk stratification, hypertension management, control of diabetes or dyslipidemia, patient assessment, weight management, aggressive coronary risk factor management, psychosocial counseling, sexual dysfunction, alcohol consumption and stress management [2, 4, 5]
Item analysis The inter-item correlation was estimated among items and a satisfactory results obtained
Summary
Evaluating knowledge in patients with coronary artery disease requires a specific measure. The aim of the present study was to translate and evaluate the CADE-Q in patients with coronary artery disease in Iran. In order to reduce mortality among patients who suffer from cardiac diseases there are many strategies. Cardiac rehabilitation programs are among wellknown strategies. Studies have shown that rehabilitation programs have significant effect in reducing length of hospital stay, improving the quality of life, and patient’s performance [9]. Such programs could raise patients’ level of knowledge and help him/her in making healthy choices in everyday life [10]. Patient education is a process that affects the patients’ behavior and changes their knowledge, attitudes, and skills needed to maintain health status [11]
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