Results of the additive logistic regression models (based on the imputed dataset) investigating the odds of death within 30 days of surgery
| Characteristic | OR | (95% CI) | OR | (95% CI) | OR | (95% CI) | OR | (95% CI) |
| Age at diagnosis (per year) | 1.08 | 1.08 to 1.08 | 1.08 | 1.07 to 1.08 | 1.08 | 1.08 to 1.08 | 1.08 | 1.08 to 1.08 |
| Sex | ||||||||
| Male | 1.00 | – | 1.00 | – | 1.00 | – | 1.00 | – |
| Female | 0.78 | 0.75 to 0.81 | 0.82 | 0.79 to 0.86 | 0.82 | 0.79 to 0.86 | 0.83 | 0.79 to 0.86 |
| Year of diagnosis | 0.98 | 0.97 to 0.98 | 0.97 | 0.96 to 0.98 | 0.97 | 0.96 to 0.98 | 0.97 | 0.97 to 0.98 |
| Cancer site | ||||||||
| Colon | 1.00 | – | 1.00 | – | 1.00 | – | 1.00 | – |
| Rectosigmoid | 0.77 | 0.71 to 0.84 | 0.82 | 0.76 to 0.89 | 0.83 | 0.76 to 0.90 | 0.88 | 0.82 to 0.96 |
| Rectum | 0.70 | 0.67 to 0.74 | 0.77 | 0.73 to 0.81 | 0.82 | 0.78 to 0.86 | 0.94 | 0.89 to 0.99 |
| IMD income category | ||||||||
| Most affluent | 1.00 | – | 1.00 | – | 1.00 | – | 1.00 | – |
| 2 | 1.03 | 0.97 to 1.11 | 1.03 | 0.96 to 1.10 | 1.03 | 0.96 to 1.10 | 1.03 | 0.96 to 1.10 |
| 3 | 1.14 | 1.07 to 1.22 | 1.12 | 1.05 to 1.20 | 1.12 | 1.05 to 1.20 | 1.11 | 1.04 to 1.19 |
| 4 | 1.26 | 1.18 to 1.35 | 1.22 | 1.14 to 1.31 | 1.22 | 1.14 to 1.31 | 1.22 | 1.13 to 1.30 |
| Most deprived | 1.42 | 1.32 to 1.52 | 1.35 | 1.26 to 1.45 | 1.35 | 1.25 to 1.45 | 1.32 | 1.23 to 1.42 |
| Charlson score | ||||||||
| 0 | 1.00 | – | 1.00 | – | 1.00 | – | ||
| 1 | 2.04 | 1.93 to 2.16 | 2.02 | 1.91 to 2.14 | 2.05 | 1.94 to 2.18 | ||
| 2 | 2.34 | 2.17 to 2.53 | 2.38 | 2.20 to 2.56 | 2.43 | 2.25 to 2.62 | ||
| ≥3 | 4.13 | 3.76 to 4.54 | 4.23 | 3.85 to 4.65 | 4.38 | 3.98 to 4.82 | ||
| Dukes' stage | ||||||||
| A | 1.00 | – | 1.00 | – | ||||
| B | 1.31 | 1.20 to 1.44 | 1.23 | 1.12 to 1.35 | ||||
| C | 1.70 | 1.55 to 1.87 | 1.54 | 1.40 to 1.69 | ||||
| D | 2.86 | 2.57 to 3.19 | 2.50 | 2.24 to 2.78 | ||||
| Operation type | ||||||||
| Elective | 1.00 | – | ||||||
| Emergency | 2.67 | 2.53 to 2.82 | ||||||
IMD, Index of Multiple Deprivation.