The Control Attitudes Scale-Revised: psychometric evaluation in three groups of patients with cardiac illness.
The Control Attitudes Scale-Revised: psychometric evaluation in three groups of patients with cardiac illness.
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DOI：
10.1097/nnr.0b013e3181900ca0
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发表时间：
2009-01
期刊：
影响因子：
2.5
通讯作者：
Dracup K
中科院分区：
文献类型：
--
作者：
Moser DK;Riegel B;McKinley S;Doering LV;Meischke H;Heo S;Lennie TA;Dracup K
知觉控制是一个具有重要的理论和临床意义的医疗服务提供者的结构，但在研究和临床实践中的实际应用的结构有待开发一个易于管理的工具来衡量知觉控制的可靠性和有效性的证据。使用3，396名冠心病（CHD）患者、513名急性心肌梗死（AMI）患者和146名心力衰竭（HF）患者的样本来测试控制态度量表修订版的心理测量学特性。对每个患者组分别进行分析。信度进行了评估，使用Cronbach的α，以确定内部的一致性，和项目同质性进行了评估，使用项目总的相关性，和项目相关性。有效性进行了检查，使用主成分分析和测试假设已知的协会。CHD、AMI和HF患者的CAS-R的Cronbach α均大于0.70。所有项目的项目-总相关系数和项目间相关系数在各组中均可接受。在因子分析中，在所有组中提取相同的单个因子，并且所有项目都中度或强烈地加载到每组中的因子中。在最终的结构效度测试中假设，在所有组中，与感知控制水平较低的患者相比，感知控制水平较高的患者抑郁和焦虑程度较低。这项研究提供了证据的可靠性和有效性的8项CAS-R作为衡量感知控制的心脏病患者，并提供了重要的洞察到一个关键的病人结构。
Perceived control is a construct with important theoretical and clinical implications for healthcare providers, yet practical application of the construct in research and clinical practice awaits development of an easily administered instrument to measure perceived control with evidence of reliability and validity. To test the psychometric properties of the Control Attitudes Scale-Revised using a sample of 3,396 individuals with coronary heart disease (CHD), 513 acute myocardial infarction (AMI) patients, and 146 patients with heart failure (HF). Analyses were done separately in each patient group. Reliability was assessed using Cronbach’s alpha to determine internal consistency, and item homogeneity was assessed using item-total correlations, and interitem correlations. Validity was examined using principal component analysis and testing hypotheses about known associations. Cronbach’s alphas for the CAS-R in patients with CHD, AMI, and HF were all greater than .70. Item–total correlation coefficients and interitem correlation coefficients for all items were acceptable in the groups. In factor analyses, the same single factor was extracted in all groups, and all items were loaded moderately or strongly to the factor in each group. As hypothesized in the final construct validity test, in all groups, patients with higher levels of perceived control had less depression and less anxiety compared with patients who had lower levels of perceived control. This study provided evidence of the reliability and validity of the 8-item CAS-R as a measure of perceived control in cardiac patients and provides important insight into a key patient construct.