*p-value < 0.05; **p-value
<.001.
TABLE 4 Concordance coefficients between adherence
classifications ratings (adherent and non-adherent) obtained by the
Global Evaluation of Medication Adherence Instrument – GEMA, the
Measurement Adherence to Treatment (MAT) and the Morisky Medication
Adherence Scale - 8 item (MMAS- 8), in patients taking oral
anticoagulation (n = 127).