Medication cost-reducing behaviors in older adults with atrial fibrillation: The SAGE-AF study

Abstract

BackgroundAs patient prices for many medications have risen steeply in the United States, patients may engage in cost-reducing behaviors (CRBs) such as asking for generic medications or purchasing medication from the Internet. ObjectiveThe objective of this study is to describe patterns of CRB, cost-related medication nonadherence, and spending less on basic needs to afford medications among older adults with atrial fibrillation (AF) and examine participant characteristics associated with CRB. MethodsData were from a prospective cohort study of older adults at least 65 years with AF and a high stroke risk (CHA2DS2VASc ≥ 2). CRB, cost-related medication nonadherence, and spending less on basic needs to afford medications were evaluated using validated measures. Chi-square and t tests were used to evaluate differences in characteristics across CRB, and statistically significant characteristics (P < 0.05) were entered into a multivariable logistic regression to examine factors associated with CRB. ResultsAmong participants (N = 1224; mean age 76 years; 49% female), 69% reported engaging in CRB, 4% reported cost-related medication nonadherence, and 6% reported spending less on basic needs. Participants who were cognitively impaired (adjusted odds ratio 0.69 [95% CI 0.52–0.91]) and those who did not identify as non-Hispanic white (0.66 [0.46–0.95]) were less likely to engage in CRB. Participants who were married (1.88 [1.30–2.72]), had a household income of $20,000-$49,999 (1.52 [1.02–2.27]), had Medicare insurance (1.38 [1.04–1.83]), and had 4-6 comorbidities (1.43 [1.01–2.01]) had significantly higher odds of engaging in CRB. ConclusionAlthough CRBs were common among older adults with AF, few reported cost-related medication nonadherence and spending less on basic needs. Patients with cognitive impairment may benefit from pharmacist intervention to provide support in CRB and patient assistance programs.