Table 4 Intergrader diabetic retinopathy severity level agreement on stereoscopic 7 fields and montages

Complete agreement (%)

53^a

 Grader MH vs NN

64

58

 Grader MH vs MSH

64

58

 Grader NN vs MSH

64

68

Agreement within one step (%)

88^a

 Grader MH vs NN

98

98

 Grader MH vs MSH

94

96

 Grader NN vs MSH

92

90

Agreement within two steps (%)

 Grader MH vs NN

100

100

 Grader MH vs MSH

96

96

 Grader NN vs MSH

96

96

κ-value

0.42^a

 Grader MH vs NN

0.4705 (p < 0.0001)

0.5403 (p < 0.0001)

 Grader MH vs MSH

0.4710 (p < 0.0001)

0.5434 (p < 0.0001)

 Grader NN vs MSH

0.5803 (p < 0.0001)

0.5452 (p < 0.0001)

Weighted κ-value

0.65^a

 Grader MH vs NN

0.7153 (p < 0001)

0.7472 (p < 0.0001)

 Grader MH vs MSH

0.6511 (p < 0.0001)

0.6975 (p < 0.0001)

 Grader NN vs MSH

0.7153 (p < 0001)

0.6873 (p < 0.0001)