| Positive SARS-CoV-2 rt-PCR (n = 23) | Negative SARS-CoV-2 rt-PCR (n = 122) | p-value |
Typical chest CT features, n (%) | 20 (87.0) | 37 (30.3) | <0.0001 |
Lymphopenia (<1200/uL), n (%) | 12 (52.2) | 65 (53.3) | 0.922 |
Exposure to a positive SARS-CoV-2 patient, n (%) | 6 (26.1) | 3 (2.5) | <0.0001 |
Fever and dry cough, n (%) | 8 (34.8) | 22 (18.0) | 0.069 |
Male gender, n (%) | 12 (52.2) | 69 (56.6) | 0.698 |
Comorbidities*, n (%) | 22 (95.7) | 115 (94.3) | 0.789 |
Negative respiratory viruses test (other than SARS-CoV-2) and negative urinary antigen tests+, n (%) | 21 (91.3) | 114 (93.4) | 0.710 |
C-reactive protein > 5.0 mg/dL, n (%) | 14 (60.9) | 84 (68.9) | 0.453 |
Procalcitonin < 0.5 ng/mL, n (%) | 19 (82.6) | 74 (60.7) | 0.044 |
LDH > 250 U/L, n (%) | 15 (65.2) | 59 (48.4) | 0.138 |
Total PSIC score, mean ± SD | 13.17 ± 3.72 | 8.39 ± 3.67 | <0.0001 |