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. Author manuscript; available in PMC: 2017 Mar 1.
Published in final edited form as: Eur Urol. 2015 Jul 10;69(3):428–435. doi: 10.1016/j.eururo.2015.06.046

Table 3.

Discrimination of varying Gleason grade categorizations

RP biopsy Gleason grade Post-RP Gleason grade RT Gleason grade
Univariate Multivariable Univariate Multivariable Univariate Multivariable
≤6 vs 7 vs ≥8 0.760 0.805 0.744 0.83 0.662 0.729
≤6 vs 3 + 4 vs 4 + 3 vs ≥8 0.781 0.811 0.791 0.842 0.684 0.736
≤6 vs 7 vs 8 vs ≥9 0.762 0.806 0.747 0.831 0.666 0.729
≤6 vs 3 + 4 vs 4 + 3 vs 8 vs ≥9 0.783 0.813 0.793 0.842 0.687 0.737

RP = radical prostatectomy; RT = radiation therapy.

Multivariable biopsy Gleason Cox model includes preoperative prostate-specific antigen (PSA) and clinical stage (T1 vs T2 vs T3/4), and post-RP Cox model includes preoperative PSA, surgical margin status, and pathology stage (pT2 vs pT3a vs pT3b vs pT4). The C-index has been corrected for optimism using 10-fold cross-validation.