Table 5

Factors of prognostic significance in cancer of the colon: multivariate relative survival model

Relative survival
FactorRR95% CIp 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
    Advanced30.3519.30–47.72
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