Table 3.
Computed tomography findings
| CT findings | Overall (n = 262) | survivors (n = 206) | deceased (n = 56) | P value | |
|---|---|---|---|---|---|
| CT severity score | 8 (6–12) | 7.5 (6–11) | 14.5 (10–21) | <0.001* | |
| Parenchymal infiltrate | GGO | 67 (25.6) | 56 (27.2) | 11 (19.6) | 0.26** |
| Consolidation | 79 (30.1) | 65 (31.6) | 14 (25) | ||
| GGO and consolidation | 116 (44.3) | 85 (41.3) | 31 (55.4) | ||
| RSNA pattern | Typical | 143 (54.6) | 113 (54.9) | 30 (53.6) | 0.81** |
| Indeterminate | 81 (30.9) | 62 (30.1) | 19 (33.9) | ||
| Atypical | 38 (14.5) | 31 (15) | 7 (12.5) | ||
| Bilateral | 253 (96.6) | 198 (96.1) | 55 (98.2) | 0.39*** | |
| Longitudinal distribution | Upper zone | 21 (8) | 16 97.8) |
5 (8.9) | 0.23** |
| Middle zone | 38 (14.5) | 33 (16) | 5 (8.9) | ||
| Lower zone | 100 (38.2) | 82 (39.8) | 18 (32.1) | ||
| Random | 103 (39.3) | 75 (36.4) | 28 (50) | ||
| Axial distribution | Peripheral | 101 (38.5) | 90 (43.7) | 11 (19.6) | 0.094*** |
| Central | 4 (1.5%) | 4 (1.9) | 0 (0) | ||
| Diffuse | 131 (50) | 91 (44.2) | 40 (71.4) | ||
| Random | 26 (9.9) | 21 (10.2) | 5 (8.9) | ||
| Number of involved lobes | 5 (5–5) | 5 (5–5) | 5 (5–5) | 0.36* | |
| Round infiltrate | |||||
| Halo sign | 19 (7.3) | 17 (8.3) | 2 (3.6) | 0.18*** | |
| Reverse halo sign | 26 (9.9) | 21 (10.2) | 5 (8.9) | 0.78** | |
| Crazy paving | 77 (29.4) | 54 (26.2) | 23 (41.1) | 0.03** | |
| Architectural distortion | 150 (57.3) | 131 (63.6) | 19 (33.9) | <0.001** | |
| Parenchymal lines | 93 (35.5) | 85 (41.3) | 8 (14.3) | <0.001** | |
| Pleural effusion | 26 (9.9) | 19 (9.2) | 7 (12.5) | 0.47** | |
| Lymphadenopathy | 6 (2.3) | 3 (1.5) | 3 (5.4) | 0.11*** | |
| Pleural thickening | 30 (11.5) | 26 (12.6) | 4 (7.1) | 0.49*** | |
| Pericardial effusion | 1 (0.4) | 0 (0) | 1 (1.3) | – | |
*: Mann-Whitney U test, **: Chi Square test, ***: Fischer's exact test.