Table 2.
CT characteristics of three age groups of COVID-19 patients
| Groups | All patients (n = 307) | Age < 40 Y (n = 104) | 40 Y ≤ Age <60 Y (n = 137) | 60 Y ≤ Age (n = 66) | P1(G1 & G2) | P2(G1 &G3) | P3(G2 &G3) |
|---|---|---|---|---|---|---|---|
| CT Findings (LW) | |||||||
| Location | <0.001 | <0.001 | 0.240 | ||||
| One lobe or Two lobes | 85 (27.7%) | 58 (55.8%) | 28 (20.4%) | 9 (13.6%) | |||
| Multiple lobes | 222 (72.3%) | 46 (44.2%) | 109 (79.6%) | 57 (86.4%) | |||
| Number | <0.001 | <0.001 | 1.000 | ||||
| One or two | 31 (10.1%) | 23 (22.1%) | 5 (3.6%) | 3 (4.5%) | |||
| More | 276 (89.9%) | 81 (77.9%) | 132 (96.4%) | 63 (95.5%) | |||
| Subpleural lesions | 289 (94.1%) | 90 (86.5%) | 135 (98.5%) | 64 (97%) | <0.001 | 0.023 | 0.830 |
| Shape | |||||||
| pGGO | 276 (89.9%) | 99 (95.2%) | 123 (89.8%) | 54 (81.8%) | 0.123 | 0.005 | 0.112 |
| mGGO | 191 (62.2%) | 60 (57.7%) | 85 (62%) | 46 (69.7%) | 0.494 | 0.115 | 0.286 |
| Sign | |||||||
| Halo sign | 254 (82.7%) | 86 (82.7%) | 114 (83.2%) | 54 (81.8%) | 0.915 | 0.884 | 0.806 |
| Reversed halo sign | 38 (12.4%) | 8 (7.7%) | 22 (16.1%) | 8 (12.1%) | 0.051 | 0.335 | 0.459 |
| Crazy paving sign | 117 (38.1%) | 18 (17.3%) | 66 (48.2%) | 33 (50%) | <0.001 | <0.001 | 0.808 |
| Cavity sign | 21 (6.8%) | 3 (2.9%) | 11 (8.3%)) | 8 (12.1%) | 0.091 | 0.039 | 0.348 |
| Organizational involvement | |||||||
| Vascular dilatation | 249 (81.1%) | 77 (74%) | 112 (81.8%) | 60 (90.9%) | 0.053 | 0.002 | 0.089 |
| Bronchodilatation | 146 (47.6%) | 38 (36.5%) | 69 (50.4%) | 39 (59.1%) | 0.032 | 0.004 | 0.243 |
| CT Findings (MW) | |||||||
| Pleural thickening* | 36 (11.7%) | 4 (3.8%) | 21 (15.3%) | 11 (16.7%) | 0.004 | 0.004 | 0.806 |
| Pleural effusion* | 15 (4.9%) | 4 (3.8%) | 6 (4.4%) | 5 (7.6%) | 1.000 | 0.480 | 0.541 |
| Lymphadenectasis | 13 (4.2%) | 3 (2.9%) | 5 (3.6%) | 5 (7.6%) | 1.000 | 0.300 | 0.144 |
Note: G1 Age<40 Y, G2 40 Y ≤ Age<60 Y, G3 60 Y ≤ Age, LW lung window, MW mediastinal window, pGGO pure ground-glass opacity, mGGO mixed ground-glass opacity, * All but one patients had mild pleural thickening or a little effusion (the only one case had moderate pleural effusion)