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

Published in final edited form as: Am J Ophthalmol. 2017 Jul 19;182:99–106. doi: 10.1016/j.ajo.2017.07.010

Table 3.

Agreement for the diagnosis of glaucoma

	Grader 2 - 1st Dx
Grader 1 - 1st Dx^a	Normal	Glaucoma	Kappa	P-value^b

	Pictor
Normal	154	81	0.54 (0.46, 0.61)	0.0915
Glaucoma	17	160	0.54 (0.46, 0.61)
	TOPCON
Normal	192	55	0.63 (0.55, 0.70)
Glaucoma	23	150	0.63 (0.55, 0.70)
	Grader 2 - 2nd Dx
Grader 1 - 2nd Dx	Normal	Glaucoma	Kappa

	Pictor
Normal	145	80	0.50 (0.42, 0.58)	0.1717
Glaucoma	25	165	0.50 (0.42, 0.58)
	TOPCON
Normal	159	70	0.58 (0.50, 0.65)
Glaucoma	20	172	0.58 (0.50, 0.65)
	Grader 1 - 1st Dx
Grader 1 - 2nd Dx	Normal	Glaucoma	Kappa

	Pictor
Normal	198	32	0.63 (0.56, 0.70)	0.0005
Glaucoma	45	147	0.63 (0.56, 0.70)
	TOPCON
Normal	218	12	0.80 (0.74, 0.86)
Glaucoma	30	162	0.80 (0.74, 0.86)
	Grader 2 - 1st Dx
Grader 2 - 2nd Dx	Normal	Glaucoma	Kappa

	Pictor
Normal	133	34	0.64 (0.56, 0.71)	0.1348
Glaucoma	38	207	0.64 (0.56, 0.71)
	TOPCON
Normal	167	12	0.72 (0.65, 0.78)
Glaucoma	48	193	0.72 (0.65, 0.78)

^a

Dx = Diagnosis

^b

test for equality of kappa statistics for Pictor versus Topcon graded images