This study examined the relationships among health promotion, self-efficacy, health behavior, and disaster preparedness among rural nurses in Malang Regency, East Java, Indonesia. A cross-sectional quantitative design was conducted involving 75 rural nurses. Data were analyzed using descriptive statistics, Pearson correlation, multiple regression, and mediation analyses. The findings revealed high levels of disaster preparedness (M = 4.10), self-efficacy (M = 4.07), health behavior (M = 4.03), and health promotion (M = 3.91). Significant positive correlations were identified among all variables (p < .001), with health promotion demonstrating strong associations with self-efficacy, health behavior, and disaster preparedness. Multiple regression analysis showed that health promotion was the only significant predictor of disaster preparedness (β = .716, p < .001), explaining 72.3% of the variance (R² = .723). In contrast, self-efficacy and health behavior did not significantly predict disaster preparedness. Mediation analysis further indicated that neither self-efficacy nor health behavior significantly mediated the relationship between health promotion and disaster preparedness. These findings highlight the central role of health promotion as the primary determinant of disaster preparedness among rural nurses. Strengthening health promotion competencies through education, training, and simulation-based programs may enhance preparedness and resilience in disaster-prone rural healthcare settings. The study provides evidence to inform disaster nursing practice, education, and policy development in vulnerable communities.
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