Here's the Memorial Sloane Kettering nomogram to determine the likelihood of recurrence following surgery: https://www.mskcc.org/nomograms/prostate/post_op

This is how they explain it:
Our post-radical prostatectomy nomogram can be used by patients after their surgical treatment for prostate cancer. This nomogram predicts the probability of remaining cancer recurrence-free at two, five, seven, and ten years following surgery. Using dynamic statistical formulas, this nomogram draws on data from more than 10,000 prostate cancer patients treated at MSK.