. Author manuscript; available in PMC: 2020 Jun 1.

Published in final edited form as: J Magn Reson Imaging. 2018 Dec 21;49(6):1694–1703. doi: 10.1002/jmri.26555

Table 4.

PI-RADSv2 overall score inter-reader reproducibility by zone

Prostate Zone	Kappa Value (κ)	P Value	Specific Agreement (P_o)	P Value

Whole Prostate

All Readers	0.24 (0.18–0.30)		0.46 (0.43–0.50)
Moderate Readers	0.27 (0.19–0.36)	0.026	0.51 (0.45–0.56)	0.007
Expert Readers	0.40 (0.32–0.48)	0.026	0.61 (0.55–0.66)	0.007
Peripheral Zone

All Readers	0.23 (0.16–0.30)		0.46 (0.42–0.51)
Moderate Readers	0.23 (0.12–0.34)	0.002	0.51 (0.45–0.58)	0.009
Expert Readers	0.43 (0.34–0.53)	0.002	0.62 (0.56–0.68)	0.009
Transition Zone

All Readers	0.19 (0.10–0.28)		0.47 (0.40–0.53)
Moderate Readers	0.27 (0.14–0.40)	0.929	0.49 (0.39–0.59)	0.347
Expert Readers	0.26 (0.06–0.43)	0.929	0.56 (0.47–0.66)	0.347

Note.- P values show the statistical difference between moderate and expert readers.