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Relationships between Medication Adherence and Cardiovascular Disease Risk Factor Control in Elderly Patients with Diabetes.

ABSTRACT: BACKGROUND:The Centers for Medicare and Medicaid Services (CMS) Medicare Star program provides incentives to health plans when their patients with diabetes meet adherence targets to angiotensin-converting enzyme inhibitors/angiotensin II receptor blockers (ACEIs/ARBs) and statins. While a link between adherence and cardiovascular risk factor control is established, most studies included young patients with few comorbidities. Whether the Star adherence target is associated with reduced blood pressure or low-density lipoprotein cholesterol (LDL-C) in complex older patients is not well understood. OBJECTIVES:Determine correlates of adherence and examine the effect of meeting Star adherence targets on blood pressure and LDL-C in the Medicare-aged diabetes population. DESIGN AND SUBJECTS:Retrospective cohort study of 129,040 patients with diabetes aged 65 or older. MEASURES:Adherence estimated using proportion of days covered target ? 0.8; blood pressure < 140/90 mg Hg; LDL-C < 100 mg/dl. Modified Poisson regression used to assess relationships. RESULTS:Adherence differed little across elderly age groups. Compared to no comorbidity, high comorbidity (? 4) was associated with lower ACEI/ARB (risk ratio [RR] 0.88 [95% confidence interval (CI) 0.87-0.89]) or statin (RR 0.91 [0.90-0.92]) adherence. ACEI/ARB adherence was not associated with blood pressure < 140/90 mm Hg in patients ? 85 years (RR 1.01 [0.96-1.07]) or with multiple comorbidities (e.g., 3: RR 1.04 [0.99-1.08]). Statin adherence and LDL-C < 100 mg/dl were associated in all elderly age groups (e.g., ? 85: RR 1.13 [1.09-1.16]) and comorbidity levels (e.g., ? 4: RR 1.13 [1.12-1.15]). CONCLUSIONS:Adherence to ACEI/ARB is not linked with reduced blood pressure in patients with diabetes who are at least 85 years or with multiple comorbidities.

SUBMITTER: Raebel MA

PROVIDER: S-EPMC5647232 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature

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Relationships between Medication Adherence and Cardiovascular Disease Risk Factor Control in Elderly Patients with Diabetes.

Raebel Marsha A MA Dyer Wendy W Nichols Gregory A GA Goodrich Glenn K GK Schmittdiel Julie A JA

Pharmacotherapy 20170912 10

<h4>Background</h4>The Centers for Medicare and Medicaid Services (CMS) Medicare Star program provides incentives to health plans when their patients with diabetes meet adherence targets to angiotensin-converting enzyme inhibitors/angiotensin II receptor blockers (ACEIs/ARBs) and statins. While a link between adherence and cardiovascular risk factor control is established, most studies included young patients with few comorbidities. Whether the Star adherence target is associated with reduced bl ...[more]

PMID: 28752555

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Project description:IntroductionThe exact pathway linking health literacy, self-efficacy, medication adherence, and glycemic control for type 2 diabetes remains unclear. Understanding the relationship between patient factors, medication adherence, and lower glycated hemoglobin (HbA1c) may help patients better manage their disease. This study examined the association of health literacy and medication self-efficacy with self-reported diabetes medication adherence, and the association of health literacy, medication self-efficacy, and self-reported diabetes medication adherence with HbA1c of patients with type 2 diabetes.MethodsThis cross-sectional study utilized a face-to-face questionnaire at two family medicine clinics in a Midwestern state among 174 patients; subjects enrolled were at least 20 years old with diagnosed type 2 diabetes, prescribed at least one oral diabetes medicine, and understood English. Questionnaires were administered to assess the participants': health literacy, using the Newest Vital Sign six-item questionnaire (NVS); self-efficacy for medication use, using the 13-item Self-Efficacy for Appropriate Medication Use Scale; and self-report medication adherence, using the eight-item Morisky Medication Adherence Scale. HbA1c values were obtained from participants' electronic medical records. Multiple linear regressions were used to explore the association of health literacy and medication self-efficacy with both medication adherence and HbA1c level after controlling for all other covariates.ResultsSelf-reported health status (? = 0.17, p = 0.015) and medication self-efficacy (? = 0.53, p < 0.001) were positively associated with diabetes medication adherence. Health literacy was neither associated with diabetes medication adherence (? = -0.04, p = 0.586) nor HbA1c (? = -0.06, p = 0.542). Lower diabetes medication adherence (? = -0.26, p = 0.008) and higher number of prescribed medications (? = 0.28, p = 0.009) were correlated with higher HbA1c.ConclusionHealth literacy, as measured by the NVS, does not correlate with medication adherence or glycemic control among patients with type 2 diabetes. Interventions to improve patients' self-efficacy of medication use may improve diabetes medication adherence.

Project description:Hispanics in the United States represent diverse racial, ethnic, and socioeconomic groups, and manifest heterogeneous cardiovascular risks including diabetes. It is not known if there are residual differences in the control of diabetes among Hispanic groups given uniform access to diabetes care.To evaluate glucose control differences among Mexicans, Puerto Ricans, and Dominicans receiving substantial diabetes care and support in the Action to Control Cardiovascular Risk in Diabetes (ACCORD) trial.Secondary analysis of data from a randomized trial comparing two treatment strategies: intensive, targeting glycated hemoglobin below 6.0 %, and standard, targeting glycated hemoglobin between 7.0 % and 7.9 %.Seven hundred and sixteen Hispanic and 6066 non-Hispanic white participants were recruited from 77 clinical sites across the United States and Canada. There were 243 Mexicans, 199 Puerto Ricans, and 150 Dominicans; and 135 of these Hispanic groups were born in the United States.Glycated hemoglobinCompared to Puerto Ricans, Mexicans were more likely (HR=1.38, CI:0.90-2.10) and Dominicans as likely (HR=1.01, CI:0.66-1.54) to achieve glycated hemoglobin goal in the intensive arm. Participants born in the United States achieved glycated hemoglobin goal at a higher rate than those born elsewhere (HR=1.57, CI:0.99-2.51 in the intensive arm, HR=1.51, CI:0.95-2.43 in the standard arm). These differences were not statistically significant. In the intensive arm, Puerto Ricans (OR=0.47, CI:0.31-0.71), and Dominicans (OR=0.41, CI:0.26-0.66) were less likely than non-Hispanic whites to achieve glycated hemoglobin goal, whereas the difference between non-Hispanic whites and Mexicans was not statistically significant, (OR=0.66, CI:0.43-1.02).Hispanic groups, given access to comprehensive diabetes care, differed from each other non-significantly and had a variable divergence from non-Hispanic whites in achieving intensive glycated hemoglobin goal. These differences, if confirmed, could be due to such factors as variable acculturation and functional health literacy levels that were not measured in the ACCORD trial, but should be further explored in future studies.

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Relationships between Medication Adherence and Cardiovascular Disease Risk Factor Control in Elderly Patients with Diabetes.

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Relationships between Medication Adherence and Cardiovascular Disease Risk Factor Control in Elderly Patients with Diabetes.

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