Table 6.

Multivariate Cox regression analysis of post-RP BCF using 32-gene risk index scores from needle biopsy tissue samples

Variable	HR (95% CI)	P value
32-Gene risk index	7.57 (1.15–49.49)	0.0345
Gleason score at biopsy		0.0474
7 vs. ≤6	2.30 (0.83–6.36)	0.1090
≥8 vs. ≤6	0.46 (0.07–3.21)	0.4345
cT stage (2 vs. 1)	1.60 (0.41–6.30)	0.5011
Proportion of cores positive (>⅓ vs. ≤⅓)	1.08 (0.43–2.73)	0.8669
Highest percent positive core	0.90 (0.76–1.06)	0.2109
Log(1+baseline PSA)	2.15 (1.10–4.20)	0.0253

Validation cohort, n = 79.

The HR calculated for the 32-gene index is based on a five-unit change. All variables are pre-RP values.