Biostatistical models predicting the risk of recurrence and extracapsular extension before radical prostatectomy for clinically localized prostate cancer are necessary.

We performed multivariate analysis on preoperative variables in clinically localized prostate cancer patients who underwent radical prostatectomy. With these data, we constructed a relative risk of recurrence (Rr) equation and an equation to predict the probability of extracapsular extension.

This model was validated with an independent cohort of radical prostatectomy patients treated at a different medical centers by multiple primary surgeons.

By filling in the form, the patient's relative risk of recurrence and probability of extracapsular extension will be calculated using the equations we developed.

For a complete copy of the article this equation was first published in, please see Bauer JJ, et. al. Military Medicine, Vol. 163, September 1998, page 615-619.