Patient demographics
| Patients | Non-cancer | Cancer | Total | P value |
| n=56 | n=136 | n=192 | ||
| Sex, n (%) | 0.53 | |||
| Male | 31 (55.4) | 82 (60.3) | 113 (58.9) | |
| Female | 25 (44.6) | 54 (39.7) | 79 (41.1) | |
| Average age (range) | 50.1 (26–73) | 59.1 (27–79) | 56.5 (26–79) | 1.27E-07 |
| Smoking history, n (%) | 0.68 | |||
| Yes | 18 (32.1) | 48 (35.3) | 66 (34.4) | |
| No | 38 (67.9) | 88 (64.7) | 126 (65.6) | |
| Family history, n (%) | 0.83 | |||
| Yes | 4 (7.1) | 11 (8.1) | 15 (7.8) | |
| No | 52 (92.9) | 125 (91.9) | 177 (92.2) | |
| Lung nodule size (mm, average max dimension) | 23.3 | 29.4 | 27.6 | 0.04 |