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| Characteristics | Histological grade | |
|---|---|---|
| Poor/moderate | Well | |
| Age (mean ± SD) | 54.9±15.0 | 60.7±12.5 |
| Gender | ||
| Male | 358 | 44 |
| Female | 54 | 3 |
| Stage | ||
| I/II/III | 375 | 43 |
| IV | 37 | 4 |
| Drink | ||
| Yes | 50 | 7 |
| No | 362 | 40 |
| Family | ||
| Yes | 92 | 5 |
| No | 320 | 42 |
