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Characteristics of NSCLC Patients and Cancer-Free Smokers in a Validation Cohort
| NSCLC Cases (n = 39) | Controls (n = 28) | P Value | |
|---|---|---|---|
| Age | 66.58 (SD 9.93) | 63.68 (SD 13.27) | .25 |
| Sex | .45 | ||
| Female | 9 | 6 | |
| Male | 30 | 22 | |
| Smoking pack-years (median) | 33.39 | 29.64 | .26 |
| Stage | |||
| Stage I | 9 | ||
| Stage II | 8 | ||
| Stage III | 11 | ||
| Stage IV | 10 | ||
| Unknown | 1 | ||
| Histological type | |||
| Adenocarcinoma | 22 | ||
| Squamous cell carcinoma | 17 |
