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%)