Table 5. Initial pulmonary CT findings of COVID-19 patients.

Characteristics of lung CT, No. (%)	all (n=545)	age<60 (n=304)	60-74 (n=179)	age≥75 (n=62)
Pneumonia	509 (93.4%)	279 (91.8%)	174 (97.2%)*	56 (90.3%)
Unilateral lung	73 (13.4%)	60 (19.7%)	9 (5%)*	4 (6.5%)*
Bilateral lung	454 (83.3%)	227 (74.7%)	169 (94.4%)*	58 (93.5%)*
Ground-glass opacity	405 (74.3%)	227 (74.7%)	141 (78.8%)	37 (59.7%)*#
Paving stone/reticular/linear	141 (25.9%)	62 (20.4%)	58 (32.4%)*	27 (43.5%)*
Consolidation shadow	74 (13.6%)	46 (15.1%)	25 (14%)	3 (4.8%)*
Air bronchogram	59 (10.8%)	27 (8.9%)	27 (15.1%)*	5 (8.1%)

Abbreviation: CT: computerized tomography. * p<0.05 vs. <60 group. # p<0.05 vs. 60-74 group.