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Table 1 Categorization of different levels of Kappa by strength of agreement

From: Reliability of medical record abstraction by non-physicians for orthopedic research

Kappa Strength of agreement
< 0 Poor
0 – 0.2 Slight
0.2 – 0.4 Fair
0.4 – 0.6 Moderate
0.6 – 0.8 Substantial
0.8 – 1 Almost perfect