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
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