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Psychometric Properties of the Cardiac Rehabilitation Self-Efficacy Questionnaire in Heart Failure Patients: A Cross
Zahra Fallah1, Awat Feizi2, Masoumeh Sadeghi3
1Department of Health Education and Promotion School of Health, Isfahan University of Medical Sciences Isfahan Iran.
Insights
A new exercise self-efficacy tool was developed and validated for heart failure patients in cardiac rehabilitation, showing high reliability and validity for use in Health Action Process Approach studies.
Area of Science:
- Cardiology
- Rehabilitation Medicine
- Health Psychology
Background:
- Heart failure patients undergoing cardiac rehabilitation often face challenges with exercise adherence.
- Self-efficacy is a key determinant of health behavior change, particularly in managing chronic conditions like heart failure.
Purpose of the Study:
- To develop and psychometrically evaluate an exercise self-efficacy tool for heart failure patients.
- To assess the tool's validity and reliability within the Health Action Process Approach (HAPA) framework.
Main Methods:
- The study involved 205 heart attack patients at a cardiac rehabilitation center.
- Exploratory factor analysis (EFA) was used for construct evaluation.
- Internal reliability was assessed using Cronbach's alpha, and external reliability via test-retest.
Main Results:
- EFA identified four factors of self-efficacy (task 1, task 2, coping, recovery), explaining 70.1% of the variance.
- Cronbach's alpha values ranged from 0.836 to 0.921 for factors and 0.9 for the overall tool.
- Test-retest reliability (intra-class correlation) was high, ranging from 0.826 to 0.901.
Conclusions:
- The developed cardiac rehabilitation self-efficacy questionnaire demonstrates strong validity and reliability.
- This tool is suitable for use in Health Action Process Approach (HAPA) studies involving heart failure patients.
Background And Aim:
The present study aimed to develop and psychometrically evaluate the exercise self-efficacy tool within the Health Action Process Approach (HAPA) framework among heart failure patients undergoing cardiac rehabilitation.
Methods:
This study assessed 205 patients who had suffered heart attacks at the Shahid Chamran Cardiac Rehabilitation Center of Isfahan. Exploratory factor analysis (EFA) was employed to evaluate the construct. Internal reliability was determined using Cronbach's alpha. Additionally, external reliability was measured through a test-retest approach.
Results:
EFA identified four factors within the self-efficacy questions (task self-efficacy 1, task self-efficacy 2, coping self-efficacy, and recovery self-efficacy), which accounted for 70.1% of the total variance explained. The Cronbach's alpha coefficients were as follows: 0.836 for the first factor, 0.896 for the second factor, 0.921 for the third factor, 0.914 for the fourth factor, and 0.9 for the overall instrument. The intra-class correlation coefficient was 0.901 for the first factor, 0.887 for the second factor, 0.826 for the third factor, and 0.885 for the fourth factor.
Conclusion:
The cardiac rehabilitation self-efficacy questionnaire exhibited high validity, reliability, and desirable item commonalities. Therefore, it can be effectively employed in pertinent HAPA-based studies involving heart failure patients.
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