. Author manuscript; available in PMC: 2021 Apr 26.

Published in final edited form as: Heart Lung. 2015 Mar 10;44(4):299–308. doi: 10.1016/j.hrtlng.2015.02.004

Table 2.

Methods for assessing medication adherence in the 17 studies included in this systematic review

Method	Adherence cut-point	Post-discharge follow-up point	Study Reference Number
Medication Possession Ratio (MPR)	≥75%	6 months, 1 year	23
	≥ 80%	1 year, 30 months	21, 29, 31
	n/a	1 year	33
Proportion of days covered (PDC)	≥ 75%	9 months	22
	≥80%	6 months, 1 year, 30 months	24, 25, 27, 28, 32, 34, 36, 37
Electronic Medication Monitors	≥ 80%	3 months	30, 35
Self-reported measure	only patients reporting that they never missed a dose were considered adherent	3 months	26