Abstract
OBJECTIVE: To increase participation in cardiac rehabilitation among outpatients with heart disease in Thailand. Factors contributing to low participation are poorly understood. A scale is needed to identify barriers to participation in cardiac rehabilitation. This study aimed to evaluate the psychometric properties of the newly translated Cardiac Rehabilitation Barriers Scale Thai version to justify its use in the Thai population with cardiovascular diseases. METHODS: Psychometric testing was conducted using a cross-sectional survey of 200 outpatients at a Bangkok hospital eligible for the cardiac rehabilitation program from April 2023 to mid-April 2024. Construct validity was evaluated using principal axis factor analysis and first- and second-order confirmatory factor analysis. Cronbach's alpha assessed the scale's internal consistency. RESULTS: The average age of the total sample was 62.60±12.37 years. Principal axis factoring with Oblimin rotation and Kaiser normalization extracted four components (subscales) that explained 61.8% of the cumulative percentage of variance. These were labeled work and time conflicts, lack of perceived need factors, comorbidities, and logistical barriers. Values for the confirmatory factor analysis goodness of fit indices exceeded recommended minimum thresholds. The internal consistencies for the total scale and the four components were entirely acceptable. CONCLUSION: The Cardiac Rehabilitation Barriers Scale Thai version has acceptable psychometric properties for Thai outpatients with cardiovascular diseases. It may be used to identify barriers to participating in cardiac rehabilitation, promote rehabilitation attendance, and improve patient care.