External Validation of an Artificial Neural Network and Two Nomograms for Prostate Cancer Detection

Table 1

Patients' characteristics.

Characteristic	Beckman Group	Roche Group
Patients [𝑛]	195	87
Age [years]
Mean	66.10	67.39
Median	66	67
Range	46–83	50–81
PSA [ng/mL]
Mean	6.78	6.98
Median	6.65	6.89
Range	4.01–9.91	4.01–9.99
%fPSA
Mean	15.69	15.63
Median	15	14
Range	5–48	4–31
Suspicious DRE [𝑛]	48 (24.6%)	19 (21.8%)
Total prostate volume [cc]
Mean	40.09	48.29
Median	36.0	43.8
Range	7.1–119.2	11.5–171.0
Prostate cancer on needle biopsy [𝑛]	71 (36.4%)	30 (34.5%)