Table 3. P values of CT findings according to sex, smoking history, age groups and duration of exposure.
| Findings | Sex* | Smoking* | Age† | Duration of exposure† |
|---|---|---|---|---|
| Centrilobular opacities | 1.0 | 1.0 | 0.284 | 0.470 |
| Subpleural dot-like or branching opacities | 0.691 | 0.672 | 0.147 | 0.328 |
| Interlobular septal thickening | 0.625 | 0.767 | 0.530 | 0.158 |
| Intralobular interstitial thickening | 0.404 | 0.142 | 0.148 | 0.466 |
| Parenchymal bands | 0.625 | 0.278 | 0.021 | 0.060 |
| Subpleural curvilinear line | 1.0 | 0.266 | 0.456 | 0.514 |
| Emphysema | 0.088 | 0.064 | 0.956 | 0.182 |
| GGO | 1.0 | 1.0 | 0.208 | 0.965 |
| Traction bronchiectasis | 0.338 | 0.292 | 0.033 | 0.082 |
| Dilatation of intralobular bronchiole | 0.603 | 0.565 | 0.183 | 0.039 |
| Honeycombing | 0.486 | 0.429 | 0.455 | 0.248 |
| Bronchiolectasis within consolidation | NA | NA | NA | NA |
| Consolidation | NA | NA | NA | NA |
Data are presented as number (%).*Comparison was done by chi-square test; †By linear-by-linear association test. GGO, ground-glass opacities; NA, not applicable because of negative CT findings.