Table 3.
Comparison of findings in patient with baseline and follow-up CXR (n = 382)
| Baseline CXR | Follow-up CXR | p value | |
|---|---|---|---|
| Positive | 351 (91.2%) | 377 (98.7%) | – |
| No abnormalities | 31 (8.8%) | 5 (1.3%) | – |
| Patterns (alone or combined) | |||
| GGO | 227 (59.4%) | 195 (51%) | < 0.001 |
| Reticular pattern | 162 (42.4%) | 142 (37.2%) | 0.0181 |
| Consolidation/s | 99 (26%) | 204 (53.4%) | 0.0039 |
| Axial distributiona | < 0.001 | ||
| Peripheral | 181 (51.6%) | 169 (48.1%) | |
| Central | 32 (9.1%) | 15 (4.3%) | |
| Diffuse (Central + Peripheral) | 138 (76.6%) | 167 (87.7%) | |
| Longitudinal distributiona | < 0.001 | ||
| Middle–inferior | 139 (39.6%) | 141 (40.2%) | |
| Inferior | 60 (17.1%) | 37 (10.5%) | |
| Superior–middle | 32 (9.1%) | 33 (9.4%) | |
| Middle | 29 (8.3%) | 22 (6.3%) | |
| Superior | 21 (6%) | 7 (2%) | |
| Superior–inferior | 11 (3.1%) | 13 (3.7%) | |
| Diffuse (superior–middle–inferior) | 59 (16.8%) | 98 (27.9%) | |
| Lateralitya | < 0.001 | ||
| Unilateral | 82 (23.4%) | 43 (12.3%) | |
| Bilateral | 269 (76.6%) | 308 (87.7%) |
N.B. the McNemar test for paired data was used (please see statistical methods)
aPercentages refer to patients with positive baseline CXR (n = 351)