Table 5
Factors of prognostic significance in cancer of the colon: multivariate relative survival model
| Relative survival | |||
|---|---|---|---|
| Factor | RR | 95% CI | p Value* |
| 3295 patients were studied, excluding cases with unknown status, tumour location, or stage at diagnosis. | |||
| *Probability for heterogeneity (likelihood ratio test). | |||
| RR, relative risk of death; 95% CI, 95% confidence interval. | |||
| Stage | |||
| Stage I | 1 | <0.0001 | |
| Stage II | 2.79 | 1.75–4.46 | |
| Stage III | 8.36 | 5.30–13.19 | |
| Advanced | 30.35 | 19.30–47.72 | |
| Period of diagnosis | |||
| 1976–1979 | 1 | <0.0001 | |
| 1980–1983 | 1.26 | 1.07–1.48 | |
| 1984–1987 | 0.98 | 0.83–1.17 | |
| 1988–1991 | 0.82 | 0.69–0.98 | |
| 1992–1995 | 0.77 | 0.65–0.92 | |
| Emergency surgery | |||
| No | 1 | <0.0001 | |
| Yes | 1.51 | 1.30–1.75 | |
| Age (y) | |||
| <75 | 1 | 0.007 | |
| ≥75 | 1.29 | 1.07–1.55 | |
| Location tumour | |||
| Left colon | 1 | ||
| Right colon | 1.24 | 1.11–1.39 | <0.0001 |
