Characteristic | Total (n = 163) | IPF-LC (n = 92) | Non-IPF-LC (n = 71) | p Value |
---|---|---|---|---|
Type of ILD | Â | Â | Â | Â |
 IPF | 92 (56.4) | 92 (100.0) | 0 (0.0) |  |
 Unclassifiable | 54 (33.1) | 0 (0.0) | 54 (76.1) |  |
 CTD-ILD | 0 (0.0) | 0 (0.0) | 14 (82.4) |  |
 NSIP | 0 (0.0) | 0 (0.0) | 2 (11.8) |  |
 Chronic HP | 0 (0.0) | 0 (0.0) | 1 (5.89) |  |
Age, years | 70.4 ± 7.3 | 70.5 ± 7.4 | 70.2 ± 7.2 | 0.827 |
Male | 151 (92.6) | 85 (92.4) | 66 (93.0) | 0.899 |
BMI, kg/m2 | 24.4 ± 3.1 | 24.4 ± 2.8 | 24.4 ± 3.5 | 0.956 |
Ever-smoker | 149 (91.4) | 84 (91.3) | 65 (91.5) | 0.827 |
Pulmonary function test | Â | Â | Â | Â |
 FVC (predicted), %  (n = 161) | 76.6 ± 16.8 | 76.5 ± 16.4 | 76.9 ± 17.5 | 0.884 |
 FEV1 (predicted), %  (n = 161) | 81.2 ± 15.8 | 80.9 ± 15.2 | 81.5 ± 16.7 | 0.812 |
 TLC (predicted), %  (n = 81) | 79.6 ± 13.4 | 79.3 ± 12.8 | 80.10 ± 14.47 | 0.800 |
 DLco (predicted), %  (n = 150) | 55.7 ± 17.6 | 54.5 ± 17.7 | 57.39 ± 17.45 | 0.319 |
Laboratory data | Â | Â | Â | Â |
 KL-6 ≥ 1000 U/mL  (n = 117) | 32 (27.4) | 20 (28.6) | 12 (25.5) | 0.718 |
Type of LC | Â | Â | Â | Â |
NSCLC | 141 (86.5) | 81 (88.0) | 60 (84.5) | 0.512 |
 Adenocarcinoma | 74 (52.5) | 43 (53.1) | 31 (51.7) | 0.867 |
 Squamous cell carcinoma | 64 (45.4) | 35 (43.2) | 29 (48.3) | 0.546 |
 Othersa | 3 (2.1) | 3 (3.7) | 0 (0.0) | 0.261 |
SCLC | 22 (13.5) | 11 (12.0) | 11 (15.5) | 0.512 |