CRP and susceptibility to pneumonia measurement: C-reactive protein concentration (6.5 mg/dL vs. 2.6 mg/dL; p<0.001), leukocyte count (7.5 × 103 cells/μL vs. 6.5 × 103 cells/μL; p = 0.001), and neutrophil count (5.5 × 103 cells/μL vs. 4.3 × 103 cells/μL; p<0.001) were significantly higher in patients with pneumonia than in those without pneumonia.