Table 2 Comparison of particular characteristics between the groups on peak CT imaging
From: Predicting lung fibrosis in post-COVID-19 patients after discharge with follow-up chest CT findings
Characteristic | Non-fibrotic group (109), N (%) | Fibrotic group (101), N (%) | p value | ||
|---|---|---|---|---|---|
Number of affected segments | 9.69 ± 3.13 5–16 | 15.12 ± 2.91 8–22 | t test 13.0 | <0.001 | |
Location | Upper lobe | 53 (48.6%) | 45 (44.6%) | Z test 0.45 | 0.65 |
Middle lobe or lingula | 78 (71.6%) | 80 (79.2%) | Z test 1.12 | 0.26 | |
Lower lobe | 85 (78.0%) | 87 (86.1%) | Z test 1.35 | 0.18 | |
Distribution | Central | 10 (9.2%) | 9 (8.9%) | Z test 0.17 | 0.86 |
Peripheral | 65 (59.6%) | 74 (73.3%) | Z test 1.94 | 0.05 | |
Central and peripheral | 34 (31.2%) | 28 (27.7%) | Z test 0.40 | 0.69 | |
Opacification | Pure GGO | 56 (51.4%) | 20 (19.8%) | Z test 4.61 | <0.001 |
GGO with consolidation | 30 (27.5%) | 47 (46.5%) | Z test 2.71 | 0.007 | |
Pure consolidation | 23 (21.1%) | 34 (33.7%) | Z test 1.89 | 0.06 | |
Bronchiectasis | 3 (2.8%) | 8 (7.9%) | Z test 1.37 | 0.17 | |
Crazy paving | 66 (60.6%) | 87 (86.1%) | Z test 4.01 | <0.001 | |
Air bronchogram | 48 (44.0%) | 73 (72.3%) | Z test 4.0 | <0.001 | |
Fibrosis with irregular interface, coarse reticular pattern, and parenchymal band | 23 (21.1%) | 63 (62.4%) | Z test 5.94 | <0.001 | |
Pleural effusion | 8 (7.3%) | 13 (12.9%) | Z test 1.10 | 0.27 | |