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Table 1 Interpretation of Kappa coefficient values between 0 and 1

From: Agreement between physicians and non-physician clinicians in starting antiretroviral therapy in rural Uganda

  Strength of agreement
0.00–0.20 Slight
0.21–0.40 Fair
0.41–0.60 Moderate
0.61–0.80 Substantial
0.81–1.00 Almost perfect
  1. Source: Landis JR, Koch GG: The measurement of observer agreement for categorical data. Biometrics 1977, 33:159–175.