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AHRQ Research Studies
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Research Studies is a compilation of published research articles funded by AHRQ or authored by AHRQ researchers.
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1 to 4 of 4 Research Studies DisplayedGlynn A, Hernandez I, Roberts ET
Consequences of forgoing prescription drug subsidies among low-income Medicare beneficiaries with diabetes.
This study’s objective was to estimate the take-up of the Medicare Part D Low-Income Subsidy (LIS) among Medicare beneficiaries with diabetes and examine differences in out-of-pocket costs and prescription drug use between LIS enrollees and LIS-eligible non-enrollees. Data from the Health and Retirement Study linked to Medicare administrative data from 2008 to 2016 was used. The authors first estimated LIS take-up stratified by income (≤100% of the Federal Poverty Level [FPL] and >100% to ≤150% of FPL). Second, to assess the consequences of forgoing the LIS among near-poor beneficiaries (incomes >100% to ≤150% of FPL), they conducted propensity score-weighted regression analyses to compare out-of-pocket costs, prescription drug use, and cost-related medication non-adherence among LIS enrollees and LIS-eligible non-enrollees. Among Medicare beneficiaries with diabetes, 68.1% of those considered near-poor (incomes >100% to ≤150% of FPL) received the LIS, compared to 90.3% of those with incomes ≤100% of FPL. Among near-poor beneficiaries, LIS-eligible non-enrollees incurred higher annual out-of-pocket drug spending ($518], filled 7.3 fewer prescriptions for diabetes, hypertension, and hyperlipidemia drugs, and were 8.9 percentage points more likely to report skipping drugs due to cost. all compared to LIS enrollees.
AHRQ-funded; HS026727.
Citation: Glynn A, Hernandez I, Roberts ET .
Consequences of forgoing prescription drug subsidies among low-income Medicare beneficiaries with diabetes.
Health Serv Res 2022 Oct;57(5):1136-44. doi: 10.1111/1475-6773.13990..
Keywords: Medication, Diabetes, Chronic Conditions, Low-Income, Medicare, Healthcare Costs
McCoy RG, Van Houten HK, Deng Y
Comparison of diabetes medications used by adults with commercial insurance vs Medicare Advantage, 2016 to 2019.
Investigators sought to compare trends in initiation of treatment with GLP-1RA, SGLT2i, and DPP-4i by older adults with type 2 diabetes insured by Medicare Advantage vs commercial health plans. They found that Medicare Advantage beneficiaries may be less likely than commercially insured beneficiaries to be treated with newer medications to lower glucose levels, with greater disparities among lower-income patients. They recommended further investigation of nonclinical factors contributing to treatment decisions and efforts to promote greater equity in diabetes management.
AHRQ-funded; HS025164.
Citation: McCoy RG, Van Houten HK, Deng Y .
Comparison of diabetes medications used by adults with commercial insurance vs Medicare Advantage, 2016 to 2019.
JAMA Netw Open 2021 Feb;4(2):e2035792. doi: 10.1001/jamanetworkopen.2020.35792..
Keywords: Elderly, Diabetes, Chronic Conditions, Medication, Medicare, Health Insurance, Disparities, Low-Income
Osborn CY, Mayberry LS, Kim JM
Medication adherence may be more important than other behaviours for optimizing glycaemic control among low-income adults.
The authors sought to identify which behaviors are most important for HbA1c among low-socioeconomic status patients with type 2 diabetes mellitus. They found that only medication adherence was significantly associated with lower HbA1c after adjusting for the other self-care behaviours and further adjusting for demographic and diabetes characteristics. They suggested that focused efforts to improve medication adherence among low-socioeconomic status patient populations may improve glycemic control.
AHRQ-funded; HS022990.
Citation: Osborn CY, Mayberry LS, Kim JM .
Medication adherence may be more important than other behaviours for optimizing glycaemic control among low-income adults.
J Clin Pharm Ther 2016 Jun;41(3):256-9. doi: 10.1111/jcpt.12360.
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Keywords: Diabetes, Low-Income, Medication, Patient Adherence/Compliance, Patient-Centered Outcomes Research
Ratanawongsa N, Karter AJ, Quan J
Reach and validity of an objective medication adherence measure among safety net health plan members with diabetes: a cross-sectional study.
The objective of this study was to evaluate the performance of continuous medication gap (CMG) for diverse, low-income managed care members with diabetes. It concluded that CMG demonstrated acceptable inclusiveness and validity in a diverse, low-income safety net population, comparable with its performance in studies among other insured populations.
AHRQ-funded; HS020684; HS022561; HS017261.
Citation: Ratanawongsa N, Karter AJ, Quan J .
Reach and validity of an objective medication adherence measure among safety net health plan members with diabetes: a cross-sectional study.
J Manag Care Spec Pharm 2015 Aug;21(8):688-98. doi: 10.18553/jmcp.2015.21.8.688..
Keywords: Diabetes, Patient Adherence/Compliance, Patient Self-Management, Medication, Low-Income