Table 2.
Multivariable Cox Proportional Hazards Analysis Predicting Distant Metastasis-free Survival
| Variable | HR | 95% CI of HR | P Value | |
|---|---|---|---|---|
| Race | ||||
| AA vs. CA | 0.82 | 0.48 | 1.37 | .438 |
| Pathologic T stage | ||||
| pT3 vs. pT2 | 1.44 | 0.97 | 2.16 | .071 |
| Gleason sum | ||||
| 7 vs. ≤6 | 1.76 | 1.14 | 2.73 | .011 |
| 8–10 vs. ≤6 | 3.44 | 2.18 | 5.43 | <.001 |
| Surgical margin | ||||
| Positive vs. negative | 0.91 | 0.69 | 1.20 | .501 |
| PSADT, mos | ||||
| 10.50–11.99 | ref | |||
| 9.01–10.50 | 1.71 | 0.87 | 3.35 | .119 |
| 7.51–9.00 | 1.75 | 0.91 | 3.36 | .091 |
| 6.01–7.50 | 2.42 | 1.31 | 4.50 | .004 |
| 4.51–6.00 | 2.96 | 1.60 | 5.47 | .001 |
| 3.01–4.51 | 4.24 | 2.38 | 7.56 | <.001 |
| ≤3 | 5.24 | 2.96 | 9.26 | <.001 |
All models were adjusted by surgery year, site, and age.
Abbreviations: AA = African-American; CA = Caucasian; CI = confidence interval; HR = hazard ratio; PSADT = prostate-specific antigen doubling time; Ref = reference value.