Table 1.

Radiological semantic features of patients in COVID-19 and non-COVID-19

Feature	Non-COVID-19 (n = 66)	COVID-19 (n = 70)	p value
Number of pure GGO
Total#	1.00 (0.00, 5.05)	3.50 (0.95, 8.05)	0.018b*
Peripheral area#	1.00 (0.00, 4.05)	2.00 (0.00, 6.05)	0.032b*
Central/both peripheral and central area#	0.00 (0.00, 0.00)	0.00 (0.00, 2.00)	0.001b*
Number of mixed GGO
Total#	1.00 (0.00, 3.05)	3.00 (1.00, 9.00)	0.001b*
Peripheral area#	0.00 (0.00, 2.00)	2.50 (1.00, 6.00)	< 0.001b*
Central/both peripheral and central area#	0.00 (0.00, 1.05)	0.00 (0.00, 2.00)	0.657b
Total number of consolidation
Consolidation#	1.00 (0.00, 3.00)	0.00 (0.00, 0.05)	0.001b*
Pure solid nodules#	0.00 (0.00, 0.00)	0.00 (0.00, 0.00)	0.309b
Solid nodules with GGO#	0.00 (0.00, 0.00)	0.00 (0.00, 1.00)	0.033b*
Total number of lesions
Peripheral area#	5.00 (2.00, 9.05)	7.00 (2.00, 13.00)	0.112b
Central area#	0.00 (0.00, 3.00)	0.00 (0.00, 1.05)	0.960b
Both peripheral and central area#	0.00 (0.00, 2.00)	0.00 (0.00, 2.05)	0.582b
Interlobular septal thickening			0.009a*
Negative	44 (66.67%)	31 (44.29%)
Positive	22 (33.33%)	39 (55.71%)
Crazy paving pattern			< 0.001a*
Negative	60 (90.91%)	32 (45.71%)
Positive	6 (9.09%)	38 (54.29%)
Tree-in-bud sign			< 0.001a*
Negative	37 (56.06%)	61 (87.14%)
Positive	29 (43.94%)	9 (12.86%)
Pleural thickening			0.030a*
Negative	46 (69.70%)	36 (51.43%)
Positive	20 (30.30%)	34 (48.57%)
Offending vessel augmentation in lesions			< 0.001a*
Negative	55 (83.33%)	17 (24.29%)
Positive	11 (16.67%)	53 (75.71%)

GGO ground-glass opacities

^#Results are median with interquartile range in parentheses, and the remainder results are measurements with corresponding ratio in parentheses

*Data with statistical significance. p^a: chi-square test, p^b: Student’s t test