Table 3: Clinical Characteristics in elderly and non-elderly Patients.
| Clinical characteristics Overall n (%) | All 28 | Elderly 12 (42.9) | Non-elderly 16 (57.1) | P |
| Male | 18 (64.3) | 7 (58.3) | 11 (68.8) | 0.430† |
| Duration of Symptoms, days | 0.208† | |||
| Range | 2-35 | 3-20 | 2-35 | |
| Mean | 9.5 ± 7.4 | 7.4 ± 5.0 | 11.0 ± 8.6 | |
| Median | 7 | 6 | 7.5 | |
| Length of ICU, days | 0.374† | |||
| Range | 1-38 | 1-30 | 4-38 | |
| Mean | 13.3 ± 9.7 | 11.3 ± 8.2 | 14.7 ± 10.7 | |
| Median | 10 | 9 | 10.5 | |
| Signs and symptoms | ||||
| Fever, ≥ 38.5 °C | 15 (68.2) | 4 (44.4) | 11 (84.6) | 0.064† |
| Anhelation | 9 (32.1) | 5 (41.7) | 4 (25) | 0.299† |
| Dyspnea | 3 (10.7) | 1 (8.3) | 2 (12.5) | 0.611† |
| Chest distress | 13 (46.4) | 6 (50) | 7 (43.8) | 0.521† |
| Chest pain | 1 (3.6) | 0 (0) | 1 (6.25) | 0.571† |
| Cough | 24 (85.7) | 11 (91.7) | 13 (81.3) | 0.417† |
| Phlegm | 12 (42.9) | 6 (50) | 6 (37.5) | 0.391† |
| Pharyngalgia | 1 (3.6) | 0 (0) | 1 (6.25) | 0.571† |
| Weakness | 6 (21.4) | 3 (25) | 3 (18.8) | 0.521† |
| Death | 11 (39.3) | 7 (58.3) | 4 (25) | 0.081† |
(%) is the percentage of the proportion in this group.
†Chi-square test; ‡Independent sample t-test.