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| Variable | Odds ratio (95% confidential interval) | P value |
|---|---|---|
| Sex | 0.053 | |
| Male | 1 | |
| Female | 1.31 (1.00–1.73) | |
| Age | 0.212 | |
| ≥66 | 1 | |
| <66 | 1.11 (0.94–1.30) | |
| Main treatment | <0.001 | |
| Radiotherapy | 1 | |
| Surgery | 1.39 (1.19–1.63) |
