Table1.

candidate clinical diagnostic factors in the derivation and validation datasets

Variable name	Variable	Definition/units	Median (IQR)
			Derivation	Validation
Age	Age	year	63.93 (68.94–58.96)	64.00 (68.00– 59.00)
log(1 + baseline PSA)	PSA	ng/ml	2.07 (2.40–1.82)	2.08 (2.35–1.81)
TRUS prostate volume	TRUS	cc	40 (55.00–31.00)	43.5 (58.0–32.0)
DRE stage	Stage	cT1a = 4, cT1b = 5, cT1c = 6, cT2a = 7, cT2b = 8, cT2c = 9	6 (7.00–6.00)	6 (7.00–6.00)
Percentage of positive cores	PPC	%	22.00 (40.00–11.00)	30.8 (50.00–16.67)
Number of positive cores	NPC	Number	3.00 (4.00–1.00)	3 (5.00–2.00)