Ethnic minorities who complete cardiac rehabilitation achieve equivalent functional capacity outcomes after cardiac rehabilitation but only half complete
Authors: Candelaria D , Duggan S , Zhang L , Zecchin R , Gallagher R 
Published: October 2024

Abstract

Background
Cardiac rehabilitation (CR) reduces the risk of death and repeat cardiac events and improves multiple patient outcomes. Ethnic minority backgrounds experience significant health disparities, often due to lack of fluency in dominant language and higher rates of cardiovascular disease risk factors. Despite these issues, outcomes for ethnic minorities from CR are rarely differentiated and participation in CR programs infrequently reported.

Purpose
To compare participation in and exercise outcomes from CR programs for patients from ethnic minorities versus the majority.

Methods
A secondary analysis from a national CR audit including 2335 CR participants. Ethnic minority was defined as having poor English language fluency requiring an interpreter for CR assessment. Functional capacity was assessed using 6-minute walk test (6MWT) or metabolic equivalent of tasks (METs). Binary logistic regression model was created to identify independent predictors of completion, accounting for baseline variables. Multiple linear regression models were used to determine if ethnic minority status was an independent predictor of change in 6MWT and METs after adjusting for baseline characteristics.

Results
Of the 2335 participants, 326 (14%) were from ethnic minorities. The mean age was 66.3±12.4 years and 70% males. There were no differences between minority and majority groups in relation to baseline characteristics. The most common referral diagnosis was myocardial infarction (27%), angina (25%), other – arrhythmias, cardiac devices, valve diseases/procedures (24%), and cardiac surgery (24%).
Ethnic minorities were half as likely to complete CR (OR 0.49, 95% CI 0.38, 0.65) adjusted for age, sex, diagnosis, minority status, smoking, referral site and wait time (Table 1). Other factors that increase completion likelihood included all other cardiac diagnoses (compared to myocardial infarction as reference) and non-smokers, whereas major referral centre and female sex negatively impacted completion.
Patients from ethnic minority backgrounds had less functional capacity at CR entry compared to the majority (379.9±118 versus 430.7±103 metres, p&lt;0.001), though METs were comparable (6.69±2.73 versus 6.46±2.28 mg/kg/min, p=0.69). However, improvements were equivalent for 6MWT: minority 71.03±58.57 versus majority 71.37±61.16 (p=0.96), and for METs: minority 3.01±1.66 versus majority 3.13±1.74 mg/kg/min (p=0.77). Ethnic minority status was not an independent predictor of change in 6MWT and METs after accounting for age, sex, diagnosis, smoking, referral site, and wait time.

Conclusion
For patients from ethnic minority groups who completed CR, exercise/functional capacity outcomes were equivalent to majority participants, however less than one-in-two completed. CR programs should consider the needs of ethnic minority groups, particularly in relation to language and tailor content and delivery to promote participation and ensure more equitable access.