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Independent risk factors for two-year mortality in ICU survivors
| Odds ratio (95% confidence interval) | P value | |
| Age (per year)a | 25.524 (1.495–435.670) | 0.025 |
| Surgery for thoracic diseases | 3.004 (1.223–7.379) | 0.016 |
| Palliative surgery | 23.863 (3.098–183.788) | 0.002 |
aAfter quadratic transformation. ICU, intensive care unit.
