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| Factors | Relative hazard (95% CI), screen detected vs symptomatic | % of screen detection effect |
|---|---|---|
| None | 0.43 (0.34–0.53) | 0 |
| Size and node status | 0.66 (0.53–0.82) | 49 |
| NPI | 0.76 (0.60–0.95) | 67 |
| NPI, age (years) | 0.79 (0.63–0.99) | 72 |
CI=confidence interval; NPI=Nottingham Prognostic Index.
