Table 3.

Patients’ radiological findings

Radiological characteristics	COVID-19 (n = 88)	Non-COVID-19 (n = 80)	Overall (n = 168)	p value
Onset-CT interval (days)	5.5 (3.3, 7.8)	3.0 (1.3, 6.0)	4.0 (2.0, 7.0)	< 0.001
Lobes involved	4.0 (2.0, 5.0)	2.0 (1.0, 3.0)	3.0 (1.0, 4.0)	< 0.001
Segments involved	8.0 (3.3, 12.0)	3.0 (1.0, 5.0)	5.0 (2.0, 9.0)	< 0.001
Pulmonary infiltration (number of segments involved, at the segmental level)
Density
GGO	7.0 (3.0, 11.0)	2.0 (1.0, 4.0)	4.0 (1.0, 8.0)	< 0.001
Consolidation	5.0 (2.0, 10.0)	2.0 (1.0, 3.0)	3.0 (1.0, 6.8)	< 0.001
Location
Periphery	8.0 (3.3, 12.0)	2.0 (1.0, 4.0)	4.0 (2.0, 8.0)	< 0.001
Center	0.0 (0.0, 2.0)	1.0 (0.0, 2.8)	1.0 (0.0, 2.0)	0.188
Form
Patchy	5.0 (2.0, 11.0)	2.0 (1.0, 4.0)	4.0 (1.0, 8.0)	< 0.001
Oval	0.0 (0.0, 2.0)	0.0 (0.0, 1.0)	0.0 (0.0, 1.0)	0.130
CT score	14.0 (7.0, 24.5)	7.0 (2.0, 12.0)	9.0 (4.0, 17.0)	< 0.001
Other radiological patterns (at the patient level)
Air bronchogram	54, 61.4%	32, 40.0%	86, 51.2%	0.006
Tree-in-bud sign	2, 2.3%	10, 12.5%	12, 7.1%	< 0.001
Crazy-paving pattern	59, 67%	12, 15.0%	71, 42.3%	< 0.001
Subpleural curvilinear line	19, 21.6%	7, 8.8%	26, 15.5%	0.022
Bronchiectasis	17, 19.3%	1, 1.3%	18, 10.7%	< 0.001
Air space	6, 6.8%	2, 2.5%	8, 4.8%	0.191
Lymphadenopathy	2, 2.3%	1, 1.3%	3, 1.8%	0.618
Pleural effusion	4, 4.5%	5, 6.3%	9, 5.4%	0.625

COVID-19 coronavirus disease 2019, GGO, ground glass opacity