Reliability of ultrasound ovarian-adnexal reporting and data system amongst less experienced readers before and after training

Table 1 Sensitivity, specificity, positive predictive value and negative predictive value per ovarian-adnexal reporting and data system category for each reader on the pre-training assessment

Pre training	ORADS 1, %	ORADS 2, %	ORADS 3, %	ORADS 4, %	ORADS 5, %
Sensitivity
R1	90 (55.5 to 99.8)	100 (69.5 to 100)	100 (59.0 to 100)	92 (61.5 to 99.8)	55 (23.4 to 83.3)
R2	90% (55.5 to 99.8)	100% (69.2 to 100)	71 (29.0 to 96.3)	92 (61.5 to 99.8)	82 (48.2 to 97.7)
R3	90 (55.5 to 99.8)	100 (69.2 to 100)	100 (59.0 to 100)	75 (42.8 to 94.5)	55 (23.4 to 83.3)
Specificity
R1	100 (91.2 to 100)	85 (70.2 to 94.3)	98 (87.7 to 99.4)	100 (90.8 to 100)	100 (91.0 to 100)
R2	100 (91.2 to 100)	90 (76.3 to 97.2)	98 (87.7 to 99.4)	97 (86.2 to 99.9)	100 (91.0 to 100)
R3	98 (86.8 to 99.9)	90 (76.3 to 97.2)	95 (84.2 to 99.4)	95 (82.3 to 99.4)	100 (91.0 to 100)
PPV
R1	100	63 (44.4 to 77.7)	88 (50.2 to 98.0)	100	100
R2	100	71 (49.7 to 86.4)	83 (40.5 to 97.4)	92 (61.2 to 98.7)	100
R3	90 (56.2 to 98.4)	71 (49.7 to 86.4)	78 (47.5 to 93.1)	82 (52.9 to 94.8)	100
NPV
R1	98 (86.2 to 99.6)	100	100	97 (85.3 to 99.6)	89 (80.3 to 93.7)
R2	98 (86.2 to 99.6)	100	96 (86.7 to 98.6)	97 (85.0 to 99.6)	95 (84.8 to 98.6)
R3	98 (85.9 to 99.6)	100	100	93 (81.8 to 97.0)	89 (80.3 to 93.7)

O-RADS: Ovarian-Adnexal Reporting and Data System; PPV: Positive predictive value; NPV: Negative predictive value.