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

Table 2 The sensitivity, specificity, positive predictive value and negative predictive value per Ovarian-Adnexal Reporting and Data System category for each reader on the post-training assessment

Post training	ORADS 1, %	ORADS 2, %	ORADS 3, %	ORADS 4, %	ORADS 5, %
Sensitivity
R1	100 (69.2 to 100)	100 (69.2 to 100)	100 (59 to 100)	92 (61.5 to 99.8)	73 (39 to 94)
R2	90 (55.5 to 99.8)	90 (55.5 to 99.8)	86 (42.1 to 99.6)	92 (61.5 to 99.8)	82 (48.2 to 97.7)
R3	100 (69.2 to 100)	100 (69.2 to 100)	100 (59 to 100)	75 (42.8 to 94.5)	64 (30.8 to 89.1)
Specificity
R1	100 (91.2 to 100)	95 (83.1 to 99.4)	98 (87.7 to 99.9)	97 (86.2 to 99.9)	100 (91 to 100)
R2	100 (91.2 to 100)	98 (86.8 to 99.9)	93 (80.9 to 98.5)	95 (82.3 to 99.4)	100 (91 to 100)
R3	100 (91.2 to 100)	95 (83.1 to 99.4)	91 (77.9 to 97.4)	97 (86.2 to 99.9)	100 (91 to 100)
PPV
R1	100	83 (56.4 to 95.1)	88 (50.2 to 98)	92 (61.2 to 98.7)	100
R2	100	90 (56.2 to 98.4)	67 (39.2 to 86.1)	85 (58.5 to 95.5)	100
R3	100	83 (56.4 to 95.1)	64 (40.8 to 81.7)	90 (55.9 to 98.5)	100
NPV
R1	100	100	100	97 (85 to 99.6)	93 (83.2 to 97.2)
R2	98 (86.2 to 99.6)	98 (85.9 to 99.6)	98 (86.7 to 99.6)	97 (84.6 to 99.6)	95 (84.8 to 98.6)
R3	100	100	100	93 (82.2 to 97.1)	91 (81.7 to 95.5)

O-RADS: Ovarian-adnexal reporting and data system; PPV: Positive predictive value; NPV: Negative predictive value.