Table 2.
Relationship between Normal PFT and Clinical Data
| Characteristic | Normal PFT (n = 347), No. (%) | Abnormal PFT (n = 43), No. (%) | P Value |
|---|---|---|---|
| Any abnormal CT | 163 (47.0) | 29 (67.4) | .015 |
| GGO | 34 (9.8) | 6 (14.0) | .42 |
| Emphysema | 23 (6.6) | 8 (18.6) | .013 |
| Multiple nodules | 31 (8.9) | 3 (7.0) | 1.0 |
| Single nodule | 33 (9.5) | 3 (7.0) | .78 |
| Consolidation | 24 (6.9) | 3 (7.0) | 1.0 |
| Age >48 yr | 171 (49.3) | 21 (48.8) | 1.0 |
| Male sex | 207 (59.7) | 27 (62.8) | .74 |
| Smoker | 195 (56.2) | 23 (53.5) | .75 |
| High-risk disease | 94 (27.1) | 20 (46.5) | .012 |
GGO indicates ground-glass opacity.