Table 1.

Baseline characteristics of patients included in the analysis

Characteristics	IPF	IPF and lung cancer	Lung cancer	IPF	Controls
Sample	Mediastinal lymph nodes	Mediastinal lymph nodes	Mediastinal lymph nodes	Lung tissue	Lung tissue
Number of patients Mean age ± SD Male Female Current smokers Ex smokers Never smokers FVC% predicted ± SD DLCO% predicted ± SD	14 71.4 ± 8.3 13 (92.9%) 1 (7.1%) 1 (7.1%) 11 (78.6%) 2 (14.3%) 86.5 ± 14.9 57.6 ± 22.6	9 69.2 ± 5.7 8 (88.9%) 1 (11.1%) 3 (33.3%) 6 (66.7%) 0 (0.0%) 77.6 ± 12.9 48.3 ± 17.4	10 67.3 ± 6.6 8 (80%) 2 (20%) 2 (20%) 7 (70%) 1 (10%) 79.2 ± 3.2 58.5 ± 9.3	123 64.8 ± 8.3 82 (66.7%) 41 (33.3%) 1 (0.8%) 76 (61.8%) 46 (37.4%) 64.6 ± 16.4 48.8 ± 18.0	96 63.9 ± 11.2 46 (47.9%) 50 (52.1%) 8 (8.3%) 48 (50.0%) 40 (41.7%) 94.8 ± 13.3 82.8 ± 17.0