Faculty of Nursing & Midwifery, Shahed University, Tehran, Iran.
Social Determinants of Health Research Center, Semnan University of Medical Sciences, Semnan, Iran.
BMC Cardiovasc Disord. 2020 Jul 23;20(1):345. doi: 10.1186/s12872-020-01628-5.
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.
Forward-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.
In 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.
The 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.
评估冠心病患者的知识需要特定的衡量标准。本研究的目的是将 CADE-Q 翻译成波斯语并在伊朗的冠心病患者中评估其心理测量学特性。
采用正向-反向翻译程序将问卷从英语翻译成波斯语。然后进行横断面研究，评估问卷的心理测量学特性。2017 年 4 月至 12 月，伊朗德黑兰医科大学附属医院心脏科的冠心病患者完成了 19 项 CADE-Q。使用探索性和验证性因子分析评估 CADE-Q 的结构效度。采用 Cronbach's alpha 系数评估信度。通过估计组内相关系数评估稳定性。
共有 500 名患者参与了这项研究。患者的平均年龄为 53.63 岁（SD=14.36），其中 57%为男性。探索性因子分析的结果显示，四个因子解决方案（生活方式和运动习惯、危险因素、诊断和治疗、信号和症状以及药物）共同解释了观察到的总方差的 48.9%。然而，二阶验证性因子分析支持三因子解决方案，而收敛和发散有效性并未得到证实。最后，该量表及其子量表的 Cronbach's alpha 系数为 0.84，范围为 0.50 至 0.82。此外，问卷的 ICC 值为 0.88，表明其稳定性良好。
冠状动脉疾病教育问卷是一种多维工具。结果通过二阶分析证实了问卷的因子结构。由于该量表的收敛和发散有效性未得到证实，因此需要进一步评估以确定该问卷在伊朗的适用性。
