Table 4.

Comparison of model-predicted risks with observed risks of histologically-aggressive prostate cancer in an initial prostate biopsy in the PCPT validation cohort. The values are presented as percentages.

			Risk of Histologically-Aggressive Prostate Cancer
Model-Predicted Risk Range (%)		Number of Patients	Mean Model- Predicted Risk (%)	Observed Percentage of Patients
0.18	1.86	383	1.3	0.5
1.87	2.92	383	2.4	1.8
2.92	4.16	384	3.5	2.6
4.16	5.57	383	4.8	5.0
5.57	7.33	383	6.4	4.2
7.34	9.52	384	8.3	5.5
9.53	12.83	383	11.0	6.0
12.86	17.91	384	15.2	12.8
17.91	27.50	383	22.2	15.1
27.56	99.98	383	45.0	31.1
0.18	99.98	3833	12.0	8.5