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Psychometric Evaluation of the Korean Version of Control Attitudes Scale-Revised
Insights
A new Korean instrument, the KCAS-R, reliably measures perceived control in heart failure (HF) patients. This tool aids self-management and improves health outcomes for individuals with HF.
Area of Science:
- Cardiology
- Psychology
- Health Sciences
Background:
- Heart failure (HF) management requires significant patient self-management.
- Patients with HF often experience a loss of control, negatively impacting self-care, quality of life, and health outcomes.
- Understanding perceived control is crucial for promoting self-care behaviors and healthy coping mechanisms in HF patients.
Purpose of the Study:
- To cross-culturally translate and adapt the Control Attitudes Scale-Revised (CAS-R) into Korean.
- To evaluate the psychometric properties of the Korean version of the Control Attitudes Scale-Revised (KCAS-R) in Korean patients with heart failure.
Main Methods:
- Translation/back-translation process to ensure semantic and conceptual equivalence.
- Reliability assessed using Cronbach's alpha for internal consistency.
- Construct validity examined through exploratory and confirmatory factor analysis, and hypothesis testing with self-efficacy, self-care confidence, and self-care.
Main Results:
- The 8-item KCAS-R demonstrated good internal consistency (Cronbach's alpha = 0.835).
- Construct validity supported a 2-factor structure explaining 63.23% of the variance.
- Higher KCAS-R scores correlated with increased self-efficacy, self-care confidence, and self-care, and decreased depression and anxiety.
Conclusions:
- The 8-item KCAS-R is a reliable and valid instrument for measuring perceived control in Korean patients with heart failure.
- The KCAS-R can be utilized to assess and potentially improve self-management strategies for Korean HF patients.
Background:
Heart failure (HF) is a chronic heart condition that requires patients to adapt to the disease and maintain a high degree of self-management. Patients with HF commonly feel loss of control, which has a negative effect on their compliance to self-care, health-related quality of life, and health outcomes. To promote self-care behavior and to develop healthy coping mechanisms, it is important to understand individual HF patients' perceived control, a self-generated belief that one has the ability to bring forth desired outcomes. Currently, there is no valid and reliable Korean instrument available in measuring perceived control among patients with HF.
Objective:
The objective of this study was to cross-culturally translate, adapt, and evaluate psychometric properties of the Korean version of Control Attitudes Scale-Revised (KCAS-R) in Korean patients with HF.
Methods:
The KCAS-R was developed using a translation/back-translation process and an examination of semantic and conceptual equivalence. Reliability was assessed using Cronbach α to determine internal consistency, and item-total and interitem correlations were assessed to test item homogeneity. The construct validity was examined using exploratory factor analysis, confirmatory factor analysis, and testing hypotheses for known associations with self-efficacy, self-care confidence, and self-care.
Results:
A convenience sample of 138 patients with HF were included for the psychometric testing of an 8-item KCAS-R. The Cronbach α for internal consistency was 0.835, and the item-total correlation was acceptable. The construct validity revealed a 2-factor structure accounting for 63.23% of the total variance. The KCAS-R was associated with higher levels of self-efficacy, self-care confidence, and self-care. In addition, patients with higher perceived control had less depression and anxiety compared with those with lower levels of perceived control.
Conclusion:
This study provided support for the satisfactory reliability and validity of the 8-item KCAS-R in measuring perceived control in Korean patients with HF.
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