TABLE 1.
Demographic and Clinical Data of Lung Cancer Patients and Cancer-Free Controls in a Training Set
| Parameter | Lung Cancer Patients | % | Cancer-Free Controls | % |
|---|---|---|---|---|
| Total No. | 66 | 68 | ||
| Age, yr, median (SD) | 64 (7) | 67 (5) | ||
| Sex | ||||
| Men | 37 | 56.1 | 43 | 63.2 |
| Women | 29 | 43.9 | 25 | 36.8 |
| Race | ||||
| White American | 38 | 57.6 | 48 | 70.6 |
| African American | 28 | 42.4 | 20 | 29.4 |
| Smoking, pack-years (SD) | 53 (19) | 49 (15) | ||
| Nodule size (cm), median (SD) | 2.6 (1.1) | 1.1 (0.7) | ||
| Histology | ||||
| Adenocarcinoma | 27 | 40.9 | ||
| Squamous-cell carcinoma | 26 | 39.4 | ||
| Small-cell carcinoma | 13 | 19.7 | ||
| Stage of 53 NSCLC | ||||
| I | 17 | 32.1 | ||
| II | 18 | 34.0 | ||
| III–IV | 18 | 33.9 |
NSCLC, non–small-cell lung cancer.