Table 2 Adjusted cause-specific Cox proportional hazard regression analyses for time to castration-resistant prostate cancer
Variable | Univariate analysis | Multivariate analysis | ||
|---|---|---|---|---|
HR (95% CI) | P-valuea | HR (95% CI) | P-valueb | |
Age at diagnosis (ref: ≤7; 1 years) | 0.667 (0.455–0.979) | 0.038 | 0.722 (0.471–1.107) | 0.135 |
Gleason score at diagnosis (ref: 4≤G≤7) | ||||
Gleason score ≥8 | 1.791 (1.189–2.697) | 0.005 | 1.616 (1.065–2.452) | 0.024 |
T stage at diagnosis(ref: ≤T2) | <0.001 | |||
T3 | 1.297 (0.624–2.695) | 0.486 | ||
T4 | 3.162 (1.622–6.163) | 0.001 | 2.999 (1.406–6.398) | 0.004 |
N stage at diagnosis (ref: N0) | ||||
N1 | 0.982 (0.653–1.478) | 0.931 | ||
M stage at Diagnosis (ref: M0) | ||||
M1 | 1.755 (1.075–2.865) | 0.024 | 0.824 (0.437–1.552) | 0.549 |
Total prostate-specific antigen (ng/ml) (ref: ≤118.78) | 1.240 (0.845-1.819) | 0.273 | ||
Free prostate-specific antigen (ng/ml) (ref: ≤19.18) | 1.583 (1.074–2.333) | 0.02 | 1.156 (0.76–1.76) | 0.498 |
Free prostate-specific antigen / Total prostate-specific antigen (%)(ref: ≤13.93) | 1.240 (0.847–1.814) | 0.269 | ||
Prostate volume (cm3) (ref: ≤106.94) | 0.822 (0.560–1.206) | 0.316 | ||
Prostate-specific antigen density (ng/ml/cm3) (ref: ≤1.18) | 1.342 (0.917–1.965) | 0.130 | ||
AR-V7 state (ref: negative) | 5.571 (3.445–9.007) | <0.001 | 4.826 (2.960–7.869) | <0.001 |