Table 3. Sensitivity (Sens.), Specificity (Spec.), Positive/Negative Predictive Value (PPV/NPV) for each observer in our prostate cancer detection study.

	Sens.	Spec.	PPV	NPV
Radiologist expert gray	0.36	0.92	0.77	0.65
Radiologist 1 color	0.19	0.92	0.64	0.60
Radiologist 2 color	0.26	0.90	0.66	0.61
Radiologist 3 color	0.15	0.95	0.69	0.59
Radiologist 4 color	0.17	0.96	0.75	0.60
Radiologists color mean	0.21	0.95	0.76	0.61
Radiologist expert color	0.36	0.91	0.75	0.65