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Table 13 Landis and Koch-Kappa’s benchmark scale [ 30 ]

From: Improving the exchange of lessons learned in security incident reports: case studies in the privacy of electronic patient records

Kappa statistic

Strength of agreement

Less than 0.0

Poor

0.0 to 0.20

Slight

0.21 to 0.40

Fair

0.41 to 0.60

Moderate

0.61 to 0.80

Substantial

0.81 to 1.00

Almost Perfect