Table 2.
Association between demographic and laboratory data according to symptoms onset and age. According to symptom ones, statistical differences were found for dyspnea, WBC, monocytes, and CRP. According to patients’ age (≤ 50 and > 50 years old), statistical differences were found for fever, dyspnea, and PLT count.
| All (n = 518) | Symptoms onset ≤ 5 days (n = 372) | Symptoms onset > 5 days (n = 146) | p-value | Age > 50 (n = 362) | Age ≤ 50 (n = 156) | p-value | |
|---|---|---|---|---|---|---|---|
| Age (yo ± SD) | 59.0 ± 18.5 | 58.2 ± 19.9 | 61.1 ± 14.3 | 0.226 | 68.7 ± 11.3 | 36.1 ± 10.2 | <0.0001 |
| Sex: male (n;%) | 290 (56.0) | 197 (52.9) | 93 (63.7) | 0.098 | 108 (59.7) | 37 (47.4) | 0.077 |
| Symptoms (n;%) | |||||||
| Fever | 450 (86.9) | 320 (86.0) | 130 (89.0) | 0.372 | 204 (56.3) | 146 (93.6) | 0.003 |
| Cough | 291 (56.0) | 201 (54.0) | 90 (61.6) | 0.167 | 188 (51.9) | 92 (59.0) | 0.088 |
| Dyspnea | 208 (40.1) | 130 (34.9) | 78 (53.4) | 0.005 | 172 (47.5) | 36 (23.1) | <0.0001 |
| GI | 18 (3.5) | 10 (2.7) | 8 (5.5) | 0.234 | 12 (3.3) | 6 (3.8) | 0.552 |
| Lab | |||||||
| WBC (x 103/mm3) | 8.1 ± 4.8 | 8.7 ± 5.2 | 6.7 ± 3.0 | 0.002 | 8.0 ± 5.0 | 8.4 ± 4.1 | 0.595 |
| Neutrophils (x 103/mm3) | 7.1 ± 9.6 | 7.3 ± 8.5 | 6.7 ± 11.8 | 0.687 | 7.1 ± 9.8 | 7.2 ± 9.2 | 0.962 |
| Lymphocytes(x 103/mm3) | 1.9 ± 4.0 | 1.9 ± 3.8 | 1.9 ± 4.3 | 0.988 | 1.6 ± 3.3 | 2.8 ± 5.2 | 0.029 |
| Monocytes (x 103/mm3) | 0.7 ± 0.4 | 0.8 ± 0.3 | 0.4 ± 0.3 | 0.004 | 0.6 ± 0.4 | 0.7 ± 0.4 | 0.499 |
| PLT (x 103/mm3) | 218.9 ± 87.1 | 222.9 ± 87.4 | 208.8 ± 86.0 | 0.243 | 202.4 ± 83.6 | 258.4 ± 82.8 | <0.0001 |
| CRP (mg/l) | 5.8 ± 7.2 | 5.2 ± 6.9 | 7.3 ± 7.9 | 0.039 | 6.8 ± 7.5 | 3.5 ± 6.1 | <0.0001 |
P-values in bold denote statistical significance.