ALB and malnutrition: After adjusting for potential confounders—including BMI, GLIM criteria for malnutrition, procalcitonin levels, albumin levels, and the Charlson comorbidity index at admission—sarcopenia remained a significant predictor of mortality, with an HR of 2.95 (95% CI: 1.03–8.46; p = 0.04) (Figure 4).