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| Characteristics | n | (%) |
|---|---|---|
| Age (yr) | ||
| Median | 61.5 | |
| Range | 27-78 | |
| Sex | ||
| Male | 53 | (67.9) |
| Female | 25 | (32.1) |
| Smoking Status | ||
| Never-smoker | 39 | (50.0) |
| Smoker | 39 | (50.0) |
| Histology | ||
| Adenocarcinoma | 33 | (42.3) |
| Squamous cell carcinoma | 26 | (33.3) |
| Other | 19 | (24.4) |
| TNM Stagea | ||
| I | 64 | (82.1) |
| II | 5 | (6.4) |
| III | 9 | (11.5) |
TNM stage determined after the surgery.
