Multivariate analysis using Cox proportional hazards model for predicting independent predictors of worse outcome in male patients with fibrosing interstitial lung disease (n=61)
| Hazard ratio | 95% CI | p-value | |
| Age years | 1.005 | 0.943–1.072 | 0.868 |
| Smoking history (yes) | 1.257 | 0.156–10.100 | 0.830 |
| KL-6 | 0.999 | 0.998–1.001 | 0.228 |
| %FVC | 0.964 | 0.930–0.999 | 0.043 |
| ATX >0.721 mg ·L−1 | 8.295 | 1.049–65.558 | 0.045 |
KL-6: Krebs von den Lungen-6; FVC: forced vital capacity; ATX: autotaxin.