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Table 4 Kappa statistic coefficient for two observers

From: Ultra-wide field imaging to assess the optic nerve and retina in Boston type I and II keratoprosthesis patients

Characteristic

Kappa statistic coefficient

(κ)

Standard error

95% Confidence interval

Image quality

0.36

0.11

0.14 to 0.59

Visible optic nerve with discernible details

1.0

*

*

Visible macula with discernible details

0.59

0.16

0.27 to 0.91

Visible anterior retina with discernible details

0.60

0.13

0.36 to 0.85

  1. *Not Applicable, perfect agreement
  2. κ= Kappa statistic coefficient
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Eye and Vision

ISSN: 2326-0254