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| Clinical characteristics | Pathologic grade | P value | |
|---|---|---|---|
| Intermediate (n = 113) | High (n = 35) | ||
| Age, mean (range) | 58.06 (30 - 76) | 59.43 (45 - 74) | 0.332 |
| Gender, N (%) | |||
| Male | 42 (68.9) | 19 (31.1) | 0.080 |
| Female | 71 (81.6) | 16 (18.4) | |
| Smoking history, N (%) | |||
| Never smokers | 68 (84.0) | 13 (16.0) | 0.020 |
| Smokers | 45 (67.2) | 22 (32.8) | |
| Stage, N (%) | |||
| I or II | 77 (77.0) | 23 (23.0) | 0.837 |
| III or IV | 36 (75.0) | 12 (25.0) | |
