The pneumonia group also had significantly lower albumin levels [3.6 (0.4) g/dL vs. 4.0 (0.4) g/dL], MMSE scores [8.2 (9.4) vs. 18.4 (10.3)], and total lymphocyte counts [1.5 (0.4) × 103/μL vs. 1.7 (0.6) × 103/μL] (p < 0.01). Here, ALB is linked to pneumonia.