Supplementary file 1_Predictive value of the monocyte-to-albumin ratio at admission for 30-day mortality in elderly patients with spontaneous intracerebral hemorrhage: a retrospective analysis.docx

Kaplan–Meier and multivariable Cox regression analyses were performed.</p>Results<p>30-day mortality was 38.8%. MAR was significantly higher in non-survivors (0.022 vs. 0.016, p < 0.001). The optimal cutoff was 0.021 (AUC 0.648, 95% CI 0.572–0.724), providing sensitivity of 57.5% and specificity of 68.3%.

MAR performance was comparable to the neutrophil-to-lymphocyte ratio (AUC 0.643) and systemic inflammatory response index (AUC 0.637). After adjustment, MAR > 0.021 was independently associated with 30-day mortality (adjusted HR 2.41, 95% CI 1.51–3.85, p < 0.001). In a sensitivity analysis using the ICH score as the primary severity covariate, MAR remained independently associated with mortality (adjusted HR 2.02, 95% CI 1.25–3.26, p = 0.004).</p>Conclusion<p>Admission MAR is independently associated with 30-day mortality in elderly sICH patients, although its discriminative ability is limited (AUC 0.648).

As a simple, routinely available parameter, MAR may serve as a supplementary—not standalone—bedside risk stratification tool.</p>