TABLE 1.
Clinical Characteristics of the 288 Lung Cancer Cases and Matched Controls in the Training and Test Sets
| Training Set (182)
|
Matched Test Set (106)
|
|||
|---|---|---|---|---|
| Cases | Controls | Cases | Controls | |
| Individuals, no. | 92 | 90 | 50 | 56 |
| Sex, no. (%) | ||||
| Male | 61 (66) | 60 (67) | 30 (60) | 29 (52) |
| Female | 31 (34) | 30 (33) | 20 (40) | 27 (48) |
| Age (yr), mean ± SD | 63.7 (9.7) | 61.2 (7.1) | 63.6 (12.0) | 60.9 (9.2) |
| Smoking status, no. (%) | ||||
| Ex | 48 (52) | 48 (53) | 25 (50) | 25 (45) |
| Current | 41 (45) | 39 (43) | 20 (40) | 27 (48) |
| Never | 3 (3) | 3 (5) | 5 (10) | 4 (7) |
| Smoking (pack-years), mean ± SD | 58.6 (34.5) | 68.2 (40.1) | 49.1 (26.6) | 60.8 (23.6) |
PKY, pack-years (product of the number of packs of cigarettes smoked per day and the number of years of smoking).