Table 3.

Sensitivity and specificity for the identification of patient referrals by each reader versus the consensus gold standard.

Reader		Number of patients, n	Sensitivity, % (95% CI)	Specificity, % (95% CI)
Level 1 reading (n=266)
	Reader A	114	91 (82.70-98.44)	95 (89.66-100.51)
	Level 3 reader for reader A	114	100 (100-100)	100 (100-100)
	Reader B	152	97 (92.72, 101.12)	85 (77.57-92.55)
	Level 3 reader for reader B	152	100 (100-100)	100 (100-100)
Level 2 reading (n=559)
	Reader A	323	86.8 (79.45-94.04)	91.7 (88.17-95.16)
	Level 3 reader for reader A	323	95.2 (90.57-99.790)	100 (100-100)
	Reader B	236	91.2 (84.43-97.92)	97.0 (94.45-99.59)
	Level 3 reader for reader B	236	91.2 (84.43-97.92)	100 (100-100)