Model | HR | 95% CI | P |
Univariate Cox | |||
Male sex | 1.31 | 0.54–3.18 | 0.55 |
Ever-smoker | 0.66 | 0.32–1.36 | 0.26 |
FVC (% predicted) | 0.99 | 0.97–1.00 | 0.13 |
DLCO (% predicted) | 1.00 | 0.98–1.02 | 0.71 |
Resting PaO2 (mm Hg) | 0.99 | 0.97–1.01 | 0.24 |
6-min walk distance (m) | 1.00 | 0.99–1.00 | 0.81 |
6-min walk test nadir SpO2 (%) | 0.94 | 0.87–1.01 | 0.077 |
Extent of fibrosis score (0–4) | 1.88 | 1.27–2.81 | 0.002* |
Early SUV | 2.13 | 0.93–4.88 | 0.073 |
Delayed SUV | 2.45 | 1.30–4.61 | 0.005* |
RI-SUV (%) | 1.03 | 1.01–1.05 | 0.003* |
Multivariate Cox | |||
RI-SUV (%) | 1.03 | 1.00–1.05 | 0.030* |
Extent of fibrosis score (0–4) | 1.66 | 1.09–2.54 | 0.018* |
↵* P < 0.05.
PaO2 = arterial partial pressure of oxygen; SpO2 = oxygen saturation.