TABLE 4.

Multivariate analysis for the prediction of biochemical recurrence-free survival by Cox regression models (solitary PSM group and multiple PSMs group, n=167)

Solitary PSM, positive surgical margin on a single site; Multiple PSMs, positive surgical margins on two or more sites; CI, confidence interval; PSA, prostate-specific antigen.

^a:Age, preoperative PSA, and prostate weight are continuous variables. ^b:Pathological T stage, pathological Gleason score, and surgical margin are categorical variables (referent categories: pT2, ≤7, and 1 PSM, respectively).