Table 2.
Comparison of COVID-19 patients with symptomatic and asymptomatic infection
| Symptomatic n = 453 cases |
Asymptomatic n = 31 cases |
P | |
|---|---|---|---|
| Sex (male) | 245 (54.08%) | 15 (48.39%) | .538 |
| Age, years | 40 (29-59) | 26 (18-55) | .009 |
| <18 | 16 (3.53%) | 8 (25.81%) | .000 |
| ≥18, <65 | 365 (80.57%) | 19 (61.29%) | .010 |
| ≥65 | 72 (15.89%) | 4 (12.90%) | .851 |
| Severe illness/death cases | 30/7 | 0/0 | .274/1.000 |
| Imported cases | 139 (30.68%) | 21 (67.74%) | .000 |
| Days needed for pharyngeal swab nucleic acid turned negative after admission | 7 (3-13) | 7 (3-12) | .810 |
| Days of hospitalization | 16 (12-21) | 15 (12-20) | .232 |
| WBC (×109/L) | 5.00 (4.03-6.28) | 5.11 (4.15-6.41) | .002 |
| LYM (×109/L) | 1.29 (0.91-1.73) | 1.33 (0.96-1.78) | .000 |
| Patients with abnormal CT findings | 393 (86.75%) | 15 (48.39%) | .000 |