Table 3 Cox regression model for progression (vs. fibrosis < 5%)
|  | Fibrosis 5–10% | Fibrosis ≥ 10% | ||
|---|---|---|---|---|
HR (95% CI) | p value | HR (95% CI) | p value | |
Fibrosis proportion only | 7.42 (3.31, 16.65) |  < 0.001 | 5.61 (2.47, 12.74) |  < 0.001 |
Adjusted for age and sex | 7.42 (3.28, 16.79) |  < 0.001 | 5.76 (2.49, 13.35) |  < 0.001 |
Adjusted for age, sex, pack-years smoking, and CCI | 7.58 (3.34, 17.24) |  < 0.001 | 6.24 (2.65, 14.71) |  < 0.001 |
Adjusted for age, sex, pack-years smoking, CCI, lung cancer, and CTD | 7.49 (3.27, 17.16) |  < 0.001 | 6.17 (2.60, 14.63) |  < 0.001 |
Adjusted for age, sex, pack-years smoking, CCI, lung cancer, CTD, and IPF | 6.85 (2.95, 15.89) |  < 0.001 | 5.78 (2.42, 13.85) |  < 0.001 |