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- Cardiovascular Conditions (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 10 of 10 Research Studies DisplayedJarrin OF, Nyandege AN, Grafova IB
Validity of race and ethnicity codes in Medicare administrative data compared with gold-standard self-reported race collected during routine home health care visits.
The authors compared the validity of two race/ethnicity variables found in Medicare administrative data against a gold-standard source also available in the Medicare data warehouse. They found that the race/ethnicity variables contained in Medicare administrative data for minority health disparities research can be improved through the use of self-reported race/ethnicity data. They conclude that future work to improve the accuracy of Medicare beneficiaries' race/ethnicity data should incorporate and augment the self-reported race/ethnicity data contained in assessment and survey data, available within the Medicare data warehouse.
AHRQ-funded; HS022406.
Citation: Jarrin OF, Nyandege AN, Grafova IB .
Validity of race and ethnicity codes in Medicare administrative data compared with gold-standard self-reported race collected during routine home health care visits.
Med Care 2020 Jan;58(1):e1-e8. doi: 10.1097/mlr.0000000000001216..
Keywords: Racial and Ethnic Minorities, Home Healthcare, Medicare, Data, Disparities, Research Methodologies
Lewis VA, Joynet Maddox K, Austin AM
Developing and validating a measure to estimate poverty in Medicare administrative data.
The purpose of this study was to develop and validate a measure that estimates individual level poverty in Medicare administrative data that can be used in studies of Medicare claims. The investigators indicate that a poverty score can be calculated using Medicare administrative data for use as a continuous or binary measure and that this measure can improve researchers' ability to identify poverty in Medicare administrative data.
AHRQ-funded; HS024075.
Citation: Lewis VA, Joynet Maddox K, Austin AM .
Developing and validating a measure to estimate poverty in Medicare administrative data.
Med Care 2019 Aug;57(8):601-07. doi: 10.1097/mlr.0000000000001154..
Keywords: Medicare, Data, Low-Income, Research Methodologies
Ghaferi AA, Dimick JB
Practical guide to surgical data sets: Medicare claims data.
In this article, the authors discuss pros and cons of Medicare data and explore commonly studied categories using this data (health policy evaluation, comparative effectiveness research, and outcome variations). They conclude that it is important to frame questions carefully and to use appropriate methods to ensure scientific rigor.
AHRQ-funded; HS023621; HS024403.
Citation: Ghaferi AA, Dimick JB .
Practical guide to surgical data sets: Medicare claims data.
JAMA Surg 2018 Jul;153(7):677-78. doi: 10.1001/jamasurg.2018.0489..
Keywords: Medicare, Data, Surgery, Patient-Centered Outcomes Research, Research Methodologies
Liang Q, Ward S, Pagani FD
Linkage of Medicare records to the interagency registry of mechanically assisted circulatory support.
This study merged Interagency Registry for Mechanically Assisted Circulatory Support (INTERMACS) records with CMS Medicare claims regarding adults receiving durable FDA-approved mechanical circulatory support devices (MCSDs) in order to investigate the uncertainty of penetrance of Medicare beneficiaries within INTERMACS. The results indicated that there was an annual increase in CMS and INTERMACS centers performing durable MCSD implants among adults from 2008 to 2013, but the CMS centers outnumbered the INTERMAC centers throughout this period. Representation within INTERMACS of MCSDs implanted in Medicare beneficiaries more than doubled in 2013. The authors conclude that ‘the vast majority’ of Medicare beneficiaries receiving MCSDs are increasingly captured in INTERMACS, and that contemporary studies in INTERMACS are therefore relevant and generalizable to the Medicare population.
AHRQ-funded; HS022535.
Citation: Liang Q, Ward S, Pagani FD .
Linkage of Medicare records to the interagency registry of mechanically assisted circulatory support.
Ann Thorac Surg 2018 May;105(5):1397-402. doi: 10.1016/j.athoracsur.2017.11.044..
Keywords: Cardiovascular Conditions, Heart Disease and Health, Data, Medicare, Registries
Liang Q, Ward S, Pagani FD
Linkage of Medicare records to the interagency registry of mechanically assisted circulatory support.
This study merged Interagency Registry for Mechanically Assisted Circulatory Support (INTERMACS) records with CMS Medicare claims regarding adults receiving durable FDA-approved mechanical circulatory support devices (MCSDs) in order to investigate the uncertainty of penetrance of Medicare beneficiaries within INTERMACS. The results indicated that there was an annual increase in CMS and INTERMACS centers performing durable MCSD implants among adults from 2008 to 2013, but the CMS centers outnumbered the INTERMAC centers throughout this period. Representation within INTERMACS of MCSDs implanted in Medicare beneficiaries more than doubled in 2013. The authors conclude that ‘the vast majority’ of Medicare beneficiaries receiving MCSDs are increasingly captured in INTERMACS, and that contemporary studies in INTERMACS are therefore relevant and generalizable to the Medicare population.
AHRQ-funded; HS022535.
Citation: Liang Q, Ward S, Pagani FD .
Linkage of Medicare records to the interagency registry of mechanically assisted circulatory support.
Ann Thorac Surg 2018 May;105(5):1397-402. doi: 10.1016/j.athoracsur.2017.11.044..
Keywords: Cardiovascular Conditions, Heart Disease and Health, Data, Medicare, Registries
Thomas KS, Dosa D, Gozalo PL
A methodology to identify a cohort of Medicare beneficiaries residing in large assisted living facilities using administrative data.
The purpose of this study was to develop and test a methodology to identify Medicare beneficiaries residing in assisted living facilities (ALFs). To this end, the investigators compiled a finder file of 9-digit ZIP codes representing large ALFs (25+ beds) by matching Outcome and Assessment Information Set (OASIS) assessments and Medicare Part B Claims to the Medicare enrollment records and addresses of 11,751 ALFs.
AHRQ-funded; HS000011.
Citation: Thomas KS, Dosa D, Gozalo PL .
A methodology to identify a cohort of Medicare beneficiaries residing in large assisted living facilities using administrative data.
Med Care 2018 Feb;56(2):e10-e15. doi: 10.1097/mlr.0000000000000659..
Keywords: Data, Medicare, Research Methodologies
Colantonio LD, Kent ST, Kilgore ML
Agreement between Medicare pharmacy claims, self-report, and medication inventory for assessing lipid-lowering medication use.
This paper analyzed the agreement between Medicare claims for lipid-lowering medication (LLM) and LLM use. Many Medicare beneficiaries reporting LLM use or having LLMs in a medication inventory have no claims for these medications.
AHRQ-funded; HS018517.
Citation: Colantonio LD, Kent ST, Kilgore ML .
Agreement between Medicare pharmacy claims, self-report, and medication inventory for assessing lipid-lowering medication use.
Pharmacoepidemiol Drug Saf 2016 Jul;25(7):827-35. doi: 10.1002/pds.3970.
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Keywords: Medicare, Medication, Elderly, Racial and Ethnic Minorities, Data
Grenda TR, Krell RW, Dimick JB
Reliability of hospital cost profiles in inpatient surgery.
This study sought to discover whether Medicare payments for surgery can reliably compare hospital costs. It found that episode payments for inpatient surgery are a reliable measure of hospital costs for commonly performed procedures, but are less reliable for lower volume operations. These findings suggest that hospital cost profiles based on Medicare claims data may be used to benchmark efficiency, especially for more common procedures.
AHRQ-funded; HS000053.
Citation: Grenda TR, Krell RW, Dimick JB .
Reliability of hospital cost profiles in inpatient surgery.
Surgery 2016 Feb;159(2):375-80. doi: 10.1016/j.surg.2015.06.043..
Keywords: Inpatient Care, Surgery, Healthcare Costs, Medicare, Data
Setoguchi S, Zhu Y, Jalbert JJ
Validity of deterministic record linkage using multiple indirect personal identifiers: linking a large registry to claims data.
The researchers compared the validity of several deterministic record linkage methods with multiple indirect identifiers by using data from the Centers for Medicare and Medicaid Services (CMS) implantable cardioverter-defibrillator (ICD) registry and administrative Medicare inpatient claims data. Linkage rules using 2 or 3 indirect, patient-level identifiers and hospital ID produced linkages with sensitivity of 95% and specificity of 98% compared with a gold standard linkage rule.
AHRQ-funded; 29020050016I; HS017731.
Citation: Setoguchi S, Zhu Y, Jalbert JJ .
Validity of deterministic record linkage using multiple indirect personal identifiers: linking a large registry to claims data.
Circ Cardiovasc Qual Outcomes 2014 May;7(3):475-80. doi: 10.1161/circoutcomes.113.000294..
Keywords: Medical Devices, Medicare, Registries, Data, Inpatient Care
Beaubrun AC, Kanda E, Bond TC
Form CMS-2728 data versus erythropoietin claims data: implications for quality of care studies.
The purpose of this study was to compare predialysis erythropoietin-simulating agents (ESA) care reported on Form CMS-2728 with Medicare claims for ESA treatment submitted for patients 67 years and older at initiation of dialysis with Medicare as the primary payer. It found that the agreement between Form CMS-2728 and claims data is poor and discordant results are observed when comparing the use of these data sources to predict health outcomes.
AHRQ-funded; HS000032.
Citation: Beaubrun AC, Kanda E, Bond TC .
Form CMS-2728 data versus erythropoietin claims data: implications for quality of care studies.
Ren Fail 2013;35(3):320-6. doi: 10.3109/0886022x.2012.747967..
Keywords: Medicare, Data, Elderly, Quality of Care, Kidney Disease and Health