Table 2.
PSA response outcomes.
| PSA response outcome | Black patients | White patients | P value | |
|---|---|---|---|---|
| (n = 214) | (n = 1332) | |||
| ≥50% decline | n (%) | 119 (55.6) | 686 (51.5) | |
| KM adjusted rate (%) | 63.1 | 64.3 | 0.3648 | |
| Unadjusted Cox analysis, HR (95% CI) | 1.09 (0.90–1.33) | Ref | 0.3660 | |
| Multivariable Cox analysis, HR (95% CI) | 1.02 (0.83–1.25) | Ref | 0.8822 | |
| ≥75% decline | n (%) | 91 (42.5) | 517 (38.8) | |
| KM adjusted rate (%) | 49.9 | 51.4 | 0.4029 | |
| Unadjusted Cox analysis, HR (95% CI) | 1.10 (0.88–1.37) | Ref | 0.4037 | |
| Multivariable Cox analysis, HR (95% CI) | 1.04 (0.82–1.31) | Ref | 0.7638 | |
| ≥90% decline | n (%) | 67 (31.3) | 329 (24.7) | |
| KM adjusted rate (%) | 38.9 | 34.2 | 0.0484 | |
| Unadjusted Cox analysis, HR (95% CI) | 1.30 (1.00–1.69) | Ref | 0.0490 | |
| Multivariable Cox analysis, HR (95% CI) | 1.23 (0.93–1.62) | Ref | 0.1435 | |
| <0.2 ng/mL PSA level | n (%) | 36 (16.8) | 206 (15.5) | |
| KM adjusted rate (%) | 30.3 | 22.9 | 0.8096 | |
| <0.1 ng/mL PSA level | n (%) | 18 (8.4) | 112 (8.4) | |
| KM adjusted rate (%) | 13.6 | 19.8 | 0.8244 | |
| <0.01 ng/mL PSA level | n (%) | 3 (1.4) | 15 (1.1) | |
| KM adjusted rate (%) | 4.4 | 1.6 | 0.7966 | |
KM Kaplan–Meier, PSA prostate-specific antigen, Ref reference.