Table 1.
Clinical features of the study population. The main general features of the study population are reported. Categorical variables, whenever dichotomous or nominal, were reported as frequencies and percentages and analyzed through the Chi-square test.
| Total (N 664) | Discharged (N 453) | Dead (N 211) | p | |
|---|---|---|---|---|
| Age (years) | 70 (56-81) | 63 (52-75) | 80 (73-87) | <0.0001 |
| Gender (M/F) | 404 (61)/260 (39) | 260 (57)/193 (43) | 144 (68)/67 (32) | 0.008 |
| WBC (×103/μL) | 7.3 (5.2-10.9) | 6.8 (5.1-9.7) | 8.4 (5.8-12.0) | <0.0001 |
| Neutrophils (×103/μL) | 5.3 (3.5-8.6) | 4.8 (3.4-7.6) | 6.7 (4.1-9.6) | <0.0001 |
| Lymphocytes (×103/μL) | 1.07 (0.76-1.54) | 1.15 (0.82-1.56) | 0.92 (0.66-1.92) | <0.0001 |
| Eosinophils (×103/μL) | 0.01 (0.00-0.03) | 0.01 (0.00-0.04) | 0.00 (0.00-0.01) | <0.0001 |
| NL ratio | 4.7 (2.8-9.1) | 4.0 (2.5-7.0) | 7.0 (3.8-13.2) | <0.0001 |
| Platelets (×103/μL) | 195 (149-249) | 198 (157-250) | 168 (129-243) | <0.0001 |
| Hb (gr/dL) | 13.4 (11.8-14.7) | 13.7 (12.1-14.8) | 12.9 (11.4-14.4) | 0.08 |
| MCH (pg) | 29.5 (28.2-30.7) | 29.3 (28.3-30.5) | 29.8 (28.0-31.1) | 0.04 |
| MCV (fL) | 89.5 (85.7-93.4) | 88.8 (85.1-91.9) | 91.3 (86.9-94.6) | <0.0001 |
| RDW (%) | 13.7 (12.9-15.1) | 13.3 (12.7-14.4) | 14.5 (13.5-15.9) | <0.0001 |
Comparison between survivors and dead has been performed by a nonparametric Wilcoxon test. For abbreviation: M: males; F: females; WBC: white blood cells; NL ratio: neutrophil-to-lymphocyte ratio; MCH: mean cell hemoglobin; MCV: mean corpuscular volume; RDW: red cell distribution width.