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. Author manuscript; available in PMC: 2018 Oct 1.

Published in final edited form as: Cornea. 2017 Oct;36(10):1159–1165. doi: 10.1097/ICO.0000000000001294

Table 3.

Inter-rater reliability for the diagnosis of corneal pathology from iTouch and Nidek photo series

	Second Grader Diagnosis
First Grader Diagnosis	Normal	Pathology	Kappa (CI)
iTouch
Grader 1 vs. Grader 2
Normal	94	7	0.54 (0.43, 0.65)
Pathology	38	59	0.54 (0.43, 0.65)
Grader 1 vs. Grader 3
Normal	90	11	0.63 (0.53, 0.74)
Pathology	25	72	0.63 (0.53, 0.74)
Grader 2 vs. Grader 3
Normal	110	22	0.71 (0.61, 0.81)
Pathology	5	61	0.71 (0.61, 0.81)
Nidek
Grader 1 vs. Grader 2
Normal	104	8	0.75 (0.66, 0.84)
Pathology	16	70	0.75 (0.66, 0.84)
Grader 1 vs. Grader 3
Normal	96	16	0.76 (0.66, 0.85)
Pathology	8	78	0.76 (0.66, 0.85)
Grader 2 vs. Grader 3
Normal	100	20	0.76 (0.66, 0.85)
Pathology	4	74	0.76 (0.66, 0.85)

CI = 95% Confidence Interval