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Table 3 Percentage of poor compliers and Cohen's kappa coefficients according to different cut-off points

From: All that glisters is not gold: a comparison of electronic monitoring versus filled prescriptions – an observational study

Cut-off points   80% 85% 90% 95%
% Poor compliance Taking compliance 3.4 3.4 4.8 14.4
  Refill compliance 11.6 18.5 23.3 32.2
Cohen's kappa coefficient   -0.056 0.005 0.020 0.009