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Characteristics of patients.
| n (male/female) | Range of the age (years) | Mean of the age(years) | |
|---|---|---|---|
| Normal controls | 23 (16/7) | 36–77 | 58.13 |
| Benign lung disease | 17 (13/4) | 34–83 | 60.94 |
| Lung cancers | 98 (68/30) | 35–82 | 59.63 |
| Lung cancer I | 17 (12/5) | 42–82 | 66.06 |
| Lung cancer II | 21 (14/7) | 38–76 | 58.19 |
| Lung cancer III | 40 (24/16) | 35–79 | 58.35 |
| Lung cancer IV | 20 (18/2) | 37–75 | 58.25 |
| Total | 138 (97/41) | 35–83 | 59.54 |
Stratifying the analysis by American Joint Committee on Cancer stage for lung cancer.
