Table S1. Location and type of lung lesions.

Variables	COVID-19 (n=1,207 lesions)	Lung cancer (n=448 lesions)	P value
Location of lesions, n (% of all lesions)			0.014*
Peripheral	923 (76%)	333 (74%)	0.40
Central	55 (5%)	29 (6%)	0.15
Both	209 (17%)	86 (19%)	0.42
Unknown	20 (2%)	0 (0%)	0.013
Type of lesions, n (% of all lesions)			<0.0001*
Pure GGO	321(27%)	204 (46%)	<0.0001
Mixed GGO	695 (58%)	210 (47%)	0.00013
Consolidation	170 (14%)	24 (5%)	<0.0001
Unknown	21 (2%)	10 (2%)	0.65

*, Pearson’s chi-squared test for overall distribution. GGO, ground-glass opacity.