TABLE 2.

Agreement Between 2 Observers on Different Disease Stages of PCa

Scale	All patients	Stage of PCa
		Staging (n = 129)	BCR (n = 67)	mCRPC (n = 23)
3-category
Unweighted Cohen κ	0.83 (0.79–0.86)	0.82 (0.74–0.85)	0.70 (0.48–0.78)	1.00
Linear weighted Cohen κ	0.90 (0.87–0.91)	0.89 (0.83–0.97)	0.79 (0.63–0.89)	1.00
Dichotomous
ppos	0.94 (0.90–0.98)	0.94 (0.87–0.99)	0.86 (0.67–1.00)	1.00
pneg	0.97 (0.95–0.99)	0.97 (0.95–0.99)	0.97 (0.94–1.00)	1.00
Cohen κ	0.91 (0.86–0.97)	0.91 (0.83–0.99)	0.83 (0.65–1.00)	1.00

BCR = biochemical recurrence; mCRPC = metastatic castration-resistant PCa.

Data in parentheses are 95% confidence intervals.