Table 5.
Second CT data of 160 patients.
| Characteristics | Overall (N = 160) | Group 1 (N = 65) | Group 2 (N = 95) | P value |
|---|---|---|---|---|
| Onset-second CT interval (day) | 14 (10,17) | 11 (8,14) | 16 (13,19) | <0.001 |
| Lobes involved | 5 (3, 5) | 5 (3,5) | 5 (4,5) | 0.340 |
| Segments involved | 13 (7.25, 17) | 13 (6.5,18) | 13 (8,17) | 0.915 |
| Pulmonary infiltration (number of segments involved) | ||||
| Location | ||||
| Peripheral | 7 (3,10) | 6 (2,8.5) | 7 (4,12) | 0.003 |
| Both | 2 (0,7) | 2 (0,7) | 2 (0,6) | 0.491 |
| Central | 0 (0,1) | 0 (0,1) | 0 (0,0) | 0.101 |
| Density | ||||
| GGO | 2 (0, 5) | 2 (0, 6) | 1 (0, 5) | 0.897 |
| Mixed | 7 (2,11) | 5 (2,10) | 7 (3,11) | 0.179 |
| Consolidation | 0 (0,2) | 0 (0,2) | 0 (0,2) | 0.843 |
| Form | ||||
| Patchy | 13 (6,17) | 12 (3,17) | 13 (7,17) | 0.250 |
| Oval | 0 (0,0) | 0 (0,1) | 0 (0,0) | 0.006 |
| Radiological score | 27 (13, 43) | 33 (11.5,51) | 25 (15,38) | 0.158 |
| Other radiological pattern | ||||
| Air bronchogram | 100 (62.5%) | 48 (73.8%) | 52 (54.7%) | 0.015 |
| Centrilobular nodules | 3 (1.9%) | 1 (1.5%) | 2 (2.1%) | 0.796 |
| Tree-in-bud | 0 (0%) | 0 (0%) | 0 (0%) | 1.000 |
| Reticular pattern | 120 (75.0%) | 44 (67.7%) | 76 (80.0%) | 0.078 |
| Subpleural linear opacity | 79 (49.4%) | 23 (35.4%) | 56 (58.9%) | 0.004 |
| Bronchial dilatation | 58 (36.3%) | 17 (26.2%) | 41 (43.2%) | 0.028 |
| Cystic change | 13 (8.1%) | 6 (9.2%) | 7 (7.4%) | 0.673 |
| Lymphadenopathy | 4 (2.5%) | 2 (3.1%) | 2 (2.1%) | 0.700 |
| Pleural effusion | 23 (14.4%) | 12 (18.5%) | 11 (11.6%) | 0.224 |
GGO: ground glass opacity.