Table 8.

Test-retest reliability method to measure stability of medication adherence electronic patient-reported outcome measure scores over time.

ePROMsa	Assessment 2		Assessment 3		Kappa value	P value	Interpretation
	Adherent, n (%)	Nonadherent, n (%)	Adherent, n (%)	Nonadherent, n (%)
HSb	29 (94)	2 (7)	31 (100)	0 (0)	0.6	.002	Moderate stability
MGLc	28 (90)	3 (10)	30 (97)	1 (3)	0.3	.11	Poor stability

^aePROMs: electronic patient-reported outcome measures to assess medication adherence.

^bHS: Haynes-Sackett questionnaire.

^cMGL: Morisky-Green-Levine 4-item questionnaire.