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| M0 | M1 | ||
| Variable | N = 378 (%) | N = 104 (%) | P value1 |
| Age | 0.111 | ||
| <65 | 250 (66.1) | 60 (57.7) | |
| ≥65 | 128 (33.9) | 44 (42.3) | |
| Gender | 0.158 | ||
| Male | 237 (62.7) | 73 (70.2) | |
| Female | 141 (37.3) | 31 (29.8) | |
| Smoking (current or former) | 0.086 | ||
| No | 266 (70.4) | 64 (61.5) | |
| Yes | 112 (29.6) | 40 (38.5) | |
| Alcohol consumption | 0.548 | ||
| No/moderate | 235 (62.2) | 68 (65.4) | |
| Yes | 143(37.8) | 36 (34.6) |
Pearson’s chi-square test: M0, no metastasis; M1, metastasis.
