Table 5.
Cox regression analysis for predictors identifying PSA relapse-free survival.
| Cox regression | B | SE | P | Exp(B) | 95% CI | |
|---|---|---|---|---|---|---|
| Lower | Upper | |||||
| Gleason score ≥8 | −0.120 | 0.480 | 0.802 | 0.887 | 0.346 | 2.273 |
| T stage | 0.419 | 0.460 | 0.362 | 1.520 | 0.617 | 3.744 |
| Age | 0.012 | 0.024 | 0.609 | 1.012 | 0.996 | 1.062 |
| Preradiotherapy PSA | 0.019 | 0.004 | 0.000 | 1.019 | 1.011 | 1.028 |
| IG | 0.609 | 0.546 | 0.265 | 1.838 | 0.630 | 5.362 |
B: regression coefficient estimate; SE: standard error; CI: confidence interval; IG: image guidance; PSA: prostate-specific antigen.