Table 2. Cox's regression analysis from the univariate models for the separate effects of each of NPI, age and mode of detection on survival, and the multivariate model with each factor adjusted for the two others.
| Factor | Category | Deaths | Relative hazard (95% CI) univariate Cox's regression results | Relative hazard (95% CI) multivariate Cox's regression results |
|---|---|---|---|---|
| Age (years) | 50–59 | 339 | 1.00 (—) | 1.00 (—) |
| 60–70 | 443 | 1.41 (1.17–1.70) | 1.36 (1.13–1.64) | |
| NPI | Excellent | 18 | 1.00 (—) | 1.00 (—) |
| Good | 53 | 1.65 (0.96–2.82) | 1.59 (0.93–2.72) | |
| Moderate 1 | 73 | 2.54 (1.51–4.26) | 2.36 (1.40–3.97) | |
| Moderate 2 | 141 | 6.38 (3.94–10.42) | 5.65 (3.43–9.30) | |
| Poor | 188 | 15.65 (9.64–25.40) | 13.87 (8.46–22.73) | |
| Detection mode | Symptomatic | 641 | 1.00 (—) | 1.00 (—) |
| Screen detected | 141 | 0.43 (0.34–0.53) | 0.79 (0.63–0.99) |
CI=confidence interval; NPI=Nottingham Prognostic Index.