Univariate Cox regression analysis for mortality

VariablePatientsHR (95% CI)p-value
Age per year4531.03 (1.01–1.05)0.001
Female versus male4531.04 (0.78–1.39)0.794
BMI per kg·m−23550.98 (0.95–1.02)0.353
Ex/current smoker versus never-smoker4381.17 (0.88–1.57)0.284
DLCO per % predicted3670.96 (0.95–0.97)<0.0001
FVC per % predicted4070.98 (0.97–0.99)<0.0001
GAP stage3701.71 (1.24–2.36)0.0010
>6months antifibrotic treatment4530.67 (0.46–0.98)0.037

HR: hazard ratio; BMI: body mass index; DLCO: diffusing capacity of the lung for carbon monoxide; FVC: forced vital capacity. Bold indicates statistically significant p-values.