Background: Hypertension is a major non-communicable disease and an important risk factor for cardiovascular morbidity and mortality among older adults. Effective self-management is essential for blood pressure control, but evidence on its association with physician-diagnosed heart disease among community-dwelling older adults in Indonesia remains limited. Objective: This study aimed to analyze the association between hypertension self-management and physician-diagnosed heart disease among older adults in Bantul District, Indonesia. Methods: A quantitative cross-sectional study was conducted from May to June 2025 at Balai Lansia Madania, Bantul District. Thirty-four older adults with hypertension were selected using purposive sampling. Hypertension self-management was assessed using the Hypertension Self-Management Behavior Questionnaire (HSMBQ). Physician-diagnosed heart disease was identified from available medical records and classified as present or absent based on documented diagnoses. Data were analyzed using descriptive statistics and Spearman’s rank correlation test, with p < 0.05 considered statistically significant. Results: Most participants were female (76.5%), aged 71–80 years (47.1%), had elementary school education (38.2%), and were unemployed (44.1%). Good hypertension self-management was observed in 82.4%, while 50.0% had physician-diagnosed heart disease. A significant negative association was found between hypertension self-management and physician-diagnosed heart disease (rₛ = −0.363; p = 0.035). Conclusion: Higher hypertension self-management scores were significantly associated with a lower prevalence of physician-diagnosed heart disease among older adults with hypertension. However, the cross-sectional design does not permit causal inference. The findings support strengthening hypertension self-management through primary healthcare and community-based services.
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