Table 1.
Clinicopathological features of patients enrolled in the BW study. ND, not determined; NSCLC, nonsmall cell lung cancer; P/Y, packs of cigarettes per year; SCLC, small cell lung cancer.
| Cancer patients | Control patients | |
|---|---|---|
| Patients | ||
| Total a | 91 | 31 |
| Male | 60 | 21 |
| Female | 31 | 10 |
| Median age (range) | 71 (47–85) | 66 (42–86) |
| Smoke habits | ||
| Current smoker | ||
| > 10 P/Y | 25 | 8 |
| < 10 P/Y | 0 | 4 |
| Former smoker | ||
| > 10 P/Y | 42 | 11 |
| < 10 P/Y | 5 | 0 |
| Nonsmoker | 10 | 1 |
| Not known | 9 | 7 |
| Diagnosis | ||
| NSCLC: adenocarcinoma | 41 | |
| NSCLC: squamous cell carcinoma | 32 | |
| SCLC | 11 | |
| Lung cancer: undefined | 7 | |
| Inflammation | 18 | |
| Hyperplasia | 4 | |
| Squamous metaplasia | 3 | |
| Sarcoidosis | 2 | |
| Pneumonia | 1 | |
| Pleurisy | 1 | |
| Tuberculosis | 2 | |
| Stage | ||
| 1 | 13 | |
| 2 | 7 | |
| 3 | 25 | |
| 4 | 43 | |
| ND | 3 | |
a
Seven patients with metastases were excluded from the analyses.