Impact of a motivational interviewing intervention targeting statins on adherence to concurrent hypertension or diabetes medications

• Published in: Patient education and counseling Vol. 104; no. 7; pp. 1756 - 1764
• Main Authors: Mohan, Anjana, Vadhariya, Aisha, Majd, Zahra, Esse, Tara W, Serna, Omar, Abughosh, Susan M.
• Format: Journal Article
• Language: English
• Published: Ireland Elsevier B.V 01.07.2021
• Subjects: Diabetes; Hyperlipidemia; Hypertension; Motivational interviewing; Nursing; Proportion of days covered (PDC); Hypertension; Motivational interviewing; Proportion of days covered (PDC); Diabetes; Hyperlipidemia
• ISSN: 0738-3991; 1873-5134
• DOI: 10.1016/j.pec.2020.12.009

•MI intervention did not improve adherence to antidiabetic/antihypertensive medications.•Interventions targeting specific adherence barriers are required.•Interventions to improve adherence among patients with multiple medications are greatly needed. This study explored if a motivational interviewing intervention customized for statins impacted adherence to concomitantly used antidiabetic/antihypertensive medications. The intervention was conducted among patients with a history of suboptimal adherence to statins and included 152 patients in intervention and 304 controls. This retrospective study design identified patients with claims for statins and either antidiabetic/antihypertensive medications. The outcome variable was adherence, measured as proportion of days covered ≥ 0.80, to antidiabetic/antihypertensive medications. Multivariable linear and logistic regression evaluated the effect of intervention on adherence to antidiabetic/antihypertensive medications during the 6 months post-intervention. The antidiabetic group had 53 intervention patients and 102 controls. The antihypertensive group had 80 intervention patients and 159 controls. There was no significant improvement in adherence for antidiabetic/antihypertensive medications following the intervention. Adherence at baseline was a significant predictor of adherence post-intervention in the antidiabetic (OR = 6.5;P < 0.0001) and antihypertensive (OR = 4.1; P = 0.0001 & β = 0.09; P = 0.008) users. Physician specialty (OR = 3.902; P = 0.01& β = 0.09; P = 0.015) among antidiabetic users and age >70 years (OR = 2.148; P = 0.025) among antihypertensive users were predictors of adherence. The intervention targeting statin did not significantly improve antihypertensive/antidiabetic adherence. Targeted interventions tailored to patient past adherence and specific medications should be explored.