Variable n HR 95% CI p-value
Age years 17 0.95 0.87-1.04 0.2928
Severity of pulmonary fibrosis Minimum, Moderate and Severe 17 0.85 0.40-1.79 0.6681
Severity of emphysema (LAA grade) Grade 1-4 17 0.89 0.50-1.59 0.6930
Clinical stage of NSCLC Stage 1-4 16 1.41 0.81-2.45 0.2195
Primary site of lung cancer Upper lobe 17 4.22 1.07-16.66 0.0399
Location of primary mass Subpleural area 17 0.32 0.08-1.26 0.1041
Serum KL-6 at diagnosis higher than the normal range (≥500U/ml) 17 11.35 1.39-92.56 0.0233
Serum LD at diagnosis higher than the normal range (>230IU/l) 17 2.72 0.76-9.77 0.1239
LAA: Low Attenuation Areas; NSCLC: Non-Small Cell Lung Cancer; KL-6: Krebs von den Lungen-6; LD: Lactate Dehydrogenase; LD: Lactate Dehydrogenase; HR: Hazard Ratio; CI: Confidence Interval.
Table 2: Univariate Cox proportional hazards regression analysis for the risk of death in the LC+CPFE group.