National Healthcare Quality and Disparities Report
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AHRQ Research Studies Date
Topics
- Blood Pressure (1)
- Cancer (2)
- Cancer: Prostate Cancer (1)
- Cardiovascular Conditions (2)
- Chronic Conditions (2)
- Comparative Effectiveness (1)
- Depression (2)
- Diabetes (3)
- Elderly (5)
- Evidence-Based Practice (1)
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- Healthcare Utilization (1)
- Heart Disease and Health (5)
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- Medicaid (1)
- (-) Medicare (16)
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- Medication: Safety (1)
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- (-) Patient Adherence/Compliance (16)
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- Quality Measures (2)
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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.
Results
1 to 16 of 16 Research Studies DisplayedLevin JS, Komanduri S, Whaley C
Association between hospital-physician vertical integration and medication adherence rates.
This study’s goal was to test the association between vertical integration of primary care providers (PCPs) and adherence rates for anti-diabetics, renin angiotensin system antagonists (RASA), and statins. Data was extracted from Medicare Part B outpatient fee-for-service claims and Medicare Part D event data from 2014 to 2017. There was a 23% increase in the proportion of patients who had a vertically integrated PCP during the study period. Changes in adherence did not differ significantly between patients based on whether their PCP became integrated. However, among patients with PCPs who become integrated, there were significant decreases in patients who were above 80 years old, were Black, Asian, Hispanic, or Native America, and had greater comorbidities for all three classes.
AHRQ-funded; HS024067.
Citation: Levin JS, Komanduri S, Whaley C .
Association between hospital-physician vertical integration and medication adherence rates.
Health Serv Res 2023 Apr; 58(2):356-64. doi: 10.1111/1475-6773.14090.
Keywords: Medication, Patient Adherence/Compliance, Medicare, Primary Care
Wickwire EM, Bailey MD, Somers VK
CPAP adherence is associated with reduced inpatient utilization among older adult Medicare beneficiaries with pre-existing cardiovascular disease.
The purpose of this study was to examine the impact of adherence to continuous positive airway pressure (CPAP) therapy on health care utilization among a nationally representative and sample of older adults with multiple morbidities and pre-existing cardiovascular disease and subsequently diagnosed with obstructive sleep apnea in the United States. The investigators concluded that in this nationally representative sample of older Medicare beneficiaries with multiple morbidities and relative to low adherers, high adherers demonstrated reduced inpatient utilization.
AHRQ-funded; HS024560.
Citation: Wickwire EM, Bailey MD, Somers VK .
CPAP adherence is associated with reduced inpatient utilization among older adult Medicare beneficiaries with pre-existing cardiovascular disease.
J Clin Sleep Med 2022 Jan;18(1):39-45. doi: 10.5664/jcsm.9478..
Keywords: Elderly, Medicare, Sleep Problems, Cardiovascular Conditions, Patient Adherence/Compliance, Hospitalization, Healthcare Utilization, Respiratory Conditions
Caram MEV, Oerline MK, Dusetzina S
Adherence and out-of-pocket costs among Medicare beneficiaries who are prescribed oral targeted therapies for advanced prostate cancer.
The authors investigated coping and material measures of the financial hardship of abiraterone and enzalutamide among patients with advanced prostate cancer with Medicare Part D coverage. They found substantial variations in the adherence rate and out-of-pocket payments, with sociodemographic patient and regional factors found to be associated with both aspects.
AHRQ-funded; HS025707.
Citation: Caram MEV, Oerline MK, Dusetzina S .
Adherence and out-of-pocket costs among Medicare beneficiaries who are prescribed oral targeted therapies for advanced prostate cancer.
Cancer 2020 Dec 1;126(23):5050-59. doi: 10.1002/cncr.33176..
Keywords: Patient Adherence/Compliance, Medicare, Cancer: Prostate Cancer, Cancer, Medication, Healthcare Costs
Doll JA, Hellkamp AS, Thomas L
The association of pre- and posthospital medication adherence in myocardial infarction patients.
Nonadherence to optimal medical therapy following myocardial infarction (MI) is associated with adverse clinical outcomes such as stent thrombosis, recurrent cardiovascular events, and death. Whether adherence to medications prior to MI predicts post-MI medication adherence is unknown. In this study, the investigators assessed adherence to P2Y12 inhibitors and statins before and after admission for MI among 8,147 MI patients who had Medicare insurance with Part D prescription coverage.
AHRQ-funded; HS021092.
Citation: Doll JA, Hellkamp AS, Thomas L .
The association of pre- and posthospital medication adherence in myocardial infarction patients.
Am Heart J 2019 Feb;208:74-80. doi: 10.1016/j.ahj.2018.11.004..
Keywords: Cardiovascular Conditions, Elderly, Heart Disease and Health, Medicare, Medication, Patient Adherence/Compliance
Maciejewski ML, Hammill BG, Voils CI
Prescriber continuity and medication availability in older adults with cardiometabolic conditions.
Researchers examined whether the number of prescribers of essential medications was associated with the availability of medications, a surrogate for adherence, to manage diabetes, hypertension or dyslipidemia. They found that the number of prescribers was not significantly associated with availability of oral diabetes agents but having more prescribers is associated with increased medication availability in older Medicare beneficiaries with dyslipidemia or hypertension.
AHRQ-funded; HS023085.
Citation: Maciejewski ML, Hammill BG, Voils CI .
Prescriber continuity and medication availability in older adults with cardiometabolic conditions.
SAGE Open Med 2018 Feb 6;6:2050312118757388. doi: 10.1177/2050312118757388.
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Keywords: Chronic Conditions, Elderly, Medicare, Medication, Patient Adherence/Compliance
Shen C, Zhao B, Liu L
Adherence to tyrosine kinase inhibitors among Medicare Part D beneficiaries with chronic myeloid leukemia.
The authors of this study identified 836 patients with chronic myeloid leukemia (CML) with Medicare Part D insurance coverage who were new tyrosine kinase inhibitors (TKI) users and examined treatment nonadherence. They indicted that the current population-based study found a significantly higher rate of nonadherence among heavily subsidized patients with substantially lower out-of-pocket costs, which suggested that future research is needed to help lower the nonadherence rate among these individuals.
AHRQ-funded; HS020263.
Citation: Shen C, Zhao B, Liu L .
Adherence to tyrosine kinase inhibitors among Medicare Part D beneficiaries with chronic myeloid leukemia.
Cancer 2018 Jan 15;124(2):364-73. doi: 10.1002/cncr.31050.
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Keywords: Chronic Conditions, Medication, Medicare, Patient Adherence/Compliance
Zullo MD, Gathright EC, Dolansky MA
Influence of depression on utilization of cardiac rehabilitation postmyocardial infarction: A study of 158 991 Medicare beneficiaries.
The purpose of this study was to examine the association between depression diagnosis and participation in cardiac rehabilitation (CR) in a large sample of Medicare beneficiaries with recent myocardial infarction (MI). It concluded that diagnosis of depression in Medicare beneficiaries was strongly associated with attending CR and attending more sessions of CR compared with those without depression. Depression is not a barrier to CR participation after MI in Medicare beneficiaries.
AHRQ-funded; HS019795.
Citation: Zullo MD, Gathright EC, Dolansky MA .
Influence of depression on utilization of cardiac rehabilitation postmyocardial infarction: A study of 158 991 Medicare beneficiaries.
J Cardiopulm Rehabil Prev 2017 Jan;37(1):22-29. doi: 10.1097/hcr.0000000000000222.
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Keywords: Heart Disease and Health, Depression, Medicare, Patient Adherence/Compliance, Comparative Effectiveness
Doll JA, Hellkamp AS, Goyal A
Treatment, outcomes, and adherence to medication regimens among dual Medicare-Medicaid-eligible adults with myocardial infarction.
The purpose of the study was to examine the association of dual-eligible status with clinical outcomes and adherence to medication regimens among older adults after MI. The investigators found that compared with Medicare-only patients, older adults with dual Medicare-Medicaid eligibility presenting with MI had superior rates of medication adherence but higher rates of postdischarge readmission and adverse cardiovascular outcomes.
AHRQ-funded; HS021092.
Citation: Doll JA, Hellkamp AS, Goyal A .
Treatment, outcomes, and adherence to medication regimens among dual Medicare-Medicaid-eligible adults with myocardial infarction.
JAMA Cardiol 2016 Oct 1;1(7):787-94. doi: 10.1001/jamacardio.2016.2724..
Keywords: Elderly, Medicaid, Medicare, Medication, Heart Disease and Health, Outcomes, Patient Adherence/Compliance
Tajeu GS, Kent ST, Kronish IM
Trends in antihypertensive medication discontinuation and low adherence among Medicare beneficiaries initiating treatment from 2007 to 2012.
The authors analyzed a 5% sample of Medicare beneficiaries initiating antihypertensive medication between 2007 and 2012 to assess whether reductions occurred in discontinuation and low adherence. They found that low adherence decreased and was more common among racial/ethnic minorities, beneficiaries with Medicaid buy-in, and those with polypharmacy, and was less common among females, beneficiaries initiating antihypertensive medication with multiple classes or a 90-day prescription fill, with dementia, a history of stroke, and those who reached the Medicare Part D coverage gap in the previous year. They concluded that although low adherence has decreased, rates of discontinuation and low adherence remain high.
AHRQ-funded; HS024262.
Citation: Tajeu GS, Kent ST, Kronish IM .
Trends in antihypertensive medication discontinuation and low adherence among Medicare beneficiaries initiating treatment from 2007 to 2012.
Hypertension 2016 Sep;68(3):565-75. doi: 10.1161/hypertensionaha.116.07720.
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Keywords: Blood Pressure, Medication, Medicare, Patient Adherence/Compliance
Farris KB, Salgado TM, Aneese N
Effect of clinical and attitudinal characteristics on obtaining comprehensive medication reviews.
The researchers sought to quantify the association between attitudinal and clinical factors with intention and predict future behavior to obtain a comprehensive medication reviews (CMR) among Medicare Part D beneficiaries. They found that worrying about medications doing more harm than good, number of pharmacies where participants obtained their medications from, number of medications, and number of medical conditions predicted intention to obtain a CMR.
AHRQ-funded; HS018353.
Citation: Farris KB, Salgado TM, Aneese N .
Effect of clinical and attitudinal characteristics on obtaining comprehensive medication reviews.
J Manag Care Spec Pharm 2016 Apr;22(4):388-95. doi: 10.18553/jmcp.2016.22.4.388.
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Keywords: Medication, Medicare, Elderly, Medication: Safety, Patient Adherence/Compliance
Goyal A, de Lemos JA, Peng SA
Association of patient enrollment in Medicare Part D with outcomes after acute myocardial infarction.
The researchers investigated whether enrollment versus nonenrollment in Medicare's prescription drug plan (Part D) is associated with better outcomes after acute myocardial infarction (AMI). They found that only half of Medicare-insured patients with AMI were enrolled in Part D by hospital discharge, and their 30-day and 1-year adjusted outcomes did not differ substantially from nonenrollees.
AHRQ-funded; HS021092.
Citation: Goyal A, de Lemos JA, Peng SA .
Association of patient enrollment in Medicare Part D with outcomes after acute myocardial infarction.
Circ Cardiovasc Qual Outcomes 2015 Nov;8(6):567-75. doi: 10.1161/circoutcomes.115.001650.
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Keywords: Heart Disease and Health, Medicare, Patient-Centered Outcomes Research, Medication, Patient Adherence/Compliance
Stuart BC, Davidoff AJ, Erten MZ
AHRQ Author: Davidoff AJ
Changes in medication management after a diagnosis of cancer among Medicare beneficiaries with diabetes.
The researchers sought to determine whether a new cancer diagnosis is associated with changes in medication adherence among Medicare beneficiaries with diabetes. They concluded that cancer diagnosis among patients with diabetes reduced adherence with evidence-based medications, particularly if patients’ life expectancy was short.
Citation: Stuart BC, Davidoff AJ, Erten MZ .
Changes in medication management after a diagnosis of cancer among Medicare beneficiaries with diabetes.
J Oncol Pract 2015 Nov;11(6):429-34. doi: 10.1200/jop.2014.003046..
Keywords: Medication, Medicare, Cancer, Diabetes, Patient Adherence/Compliance
Schmittdiel JA, Nichols GA, Dyer W
Health care system-level factors associated with performance on Medicare STAR adherence metrics in a large, integrated delivery system.
The researchers examined the association of Medicare STAR adherence metrics with system-wide factors for patients with diabetes. They found that the strongest predictor of achieving STAR-defined medication adherence for patients with diabetes was a greater days’ supply of medications. Other important factors were use of a mail order pharmacy, lower copayments and lower annual individual out-of-pocket maximums.
AHRQ-funded; HS019859
Citation: Schmittdiel JA, Nichols GA, Dyer W .
Health care system-level factors associated with performance on Medicare STAR adherence metrics in a large, integrated delivery system.
Med Care. 2015 Apr;53(4):332-7. doi: 10.1097/mlr.0000000000000328..
Keywords: Medicare, Diabetes, Patient Adherence/Compliance, Quality Measures
Schmittdiel J, Raebel M, Dyer W
Medicare Star excludes diabetes patients with poor CVD risk factor control.
This study is designed to improve understanding of novel CMS quality measures (adherence to antihypertensives, antihyperlipidemics, and oral antihyperglycemics) by assessing the proportion of Medicare patients with diabetes who are excluded from the Medicare Star medication adherence metrics due to early nonadherence and insulin use. Medicare’s STAR measures are used to evaluate the performance of Medicare Advantage plans.
AHRQ-funded; HS019859
Citation: Schmittdiel J, Raebel M, Dyer W .
Medicare Star excludes diabetes patients with poor CVD risk factor control.
Am J Manag Care. 2014 Dec; 20(12):e573-81..
Keywords: Medicare, Diabetes, Quality Measures, Patient Adherence/Compliance
Bao Y, Ryan AM, Shao H
Generic initiation and antidepressant therapy adherence under Medicare Part D.
This study assessed the effects of initiating antidepressant treatment with a generic versus a branded prescription (generic initiation) on adherence to antidepressant therapy for the treatment of depression. It found that starting patients with generics had benefits for antidepressant adherence by lowering out-of-pocket costs for all patients and by mitigating the effect of the Part D coverage gap faced by patients not receiving low-income subsidies.
AHRQ-funded; HS018546.
Citation: Bao Y, Ryan AM, Shao H .
Generic initiation and antidepressant therapy adherence under Medicare Part D.
Am J Manag Care 2013 Dec;19(12):989-98..
Keywords: Medication, Depression, Medicare, Patient Adherence/Compliance
Stuart B, Davidoff A, Erten M
AHRQ Author: Davidoff A
How Medicare Part D benefit phases affect adherence with evidence-based medications following acute myocardial infarction.
The authors assessed the impact of Medicare Part D benefit phases on adherence with evidence-based medications after hospitalization for an acute myocardial infarction (AMI). They found that as the Part D doughnut hole is gradually filled in by 2020, Medicare Part D enrollees with critical diseases such as AMI who rely heavily on brand name drugs are likely to exhibit modest increases in adherence, while those reliant on generic drugs are less likely to be affected.
AHRQ-authored.
Citation: Stuart B, Davidoff A, Erten M .
How Medicare Part D benefit phases affect adherence with evidence-based medications following acute myocardial infarction.
Health Serv Res 2013 Dec;48(6 Pt 1):1960-77. doi: 10.1111/1475-6773.12073.
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Keywords: Evidence-Based Practice, Medicare, Medication, Heart Disease and Health, Patient Adherence/Compliance