. Author manuscript; available in PMC: 2022 Mar 23.

Published in final edited form as: J Magn Reson Imaging. 2020 Jun 1;52(5):1499–1507. doi: 10.1002/jmri.27204

TABLE 4.

Upgrading and Downgrading of PI-RADS Score by Dataset

PI-RADS score	Validation		Test		Validation + test
PI-RADS score	Upgraded	Downgraded	Upgraded	Downgraded	Upgraded	Downgraded
2	25/25 (100%)	0/25 (0%)	8/10 (80%)	0/10 (0%)	33/35 (94%)	0/35 (0%)
3	21/51 (41%)	1/51 (2%)	13/26 (40%)	2/26 (8%)	34/77 (44%)	3/77 (4%)
4	11/79 (14%)	17/79 (22%)	7/30 (23%)	8/30 (27%)	18/109 (17%)	25/109 (23%)
5	0/57 (0%)	13/57 (23%)	0/29 (0%)	4/29 (14%)	0/86 (0%)	17/86 (20%)
Overall	57/212 (27%)	31/212 (15%)	28/95 (30%)	14/95 (15%)	85/307 (28%)	45/307 (15%)