2024
Sex differences in treatment strategies for pulmonary embolism in older adults: The SERIOUS-PE study of RIETE participants and US Medicare beneficiaries.
Bikdeli B, Leyva H, Muriel A, Lin Z, Piazza G, Khairani C, Rosovsky R, Mehdipour G, O'Donoghue M, Madridano O, Lopez-Saez J, Mellado M, Diaz Brasero A, Grandone E, Spagnolo P, Lu Y, Bertoletti L, López-Jiménez L, Jesús Núñez M, Blanco-Molina Á, Gerhard-Herman M, Goldhaber S, Bates S, Jimenez D, Krumholz H, Monreal M. Sex differences in treatment strategies for pulmonary embolism in older adults: The SERIOUS-PE study of RIETE participants and US Medicare beneficiaries. Vascular Medicine 2024, 1358863x241292023. PMID: 39588564, DOI: 10.1177/1358863x241292023.Peer-Reviewed Original ResearchRegistro Informatizado Enfermedad TromboEmbolicaIntermediate-risk PEInferior vena cavaPulmonary embolismFibrinolytic therapyAdvanced therapiesInferior vena cava filter placementUS Medicare beneficiariesSex differencesOlder adultsMedicare beneficiariesAnticoagulation patternsFilter placementVena cavaMale patientsClinical outcomesTreatment strategiesAssess sex differencesPE therapyTherapyRisk factorsStandardized differenceAnticoagulationTherapy utilizationSex disparitiesTrends in use of intensive care during hospitalizations at the end‐of‐life among older adults with advanced cancer
Jain S, Long J, Rao V, Law A, Walkey A, Prsic E, Lindenauer P, Krumholz H, Gross C. Trends in use of intensive care during hospitalizations at the end‐of‐life among older adults with advanced cancer. Journal Of The American Geriatrics Society 2024 PMID: 39090970, DOI: 10.1111/jgs.19119.Peer-Reviewed Original ResearchEnd-of-life hospitalizationsLife-sustaining treatmentEnd-of-lifeIntensity of careIn-hospital deathOlder adultsIntensive care unitAdvanced cancerRisk-adjusted hospitalEvaluate trendsIncreased intensity of careIntensive care unit useSEER-Medicare dataIntensive care unit careMultinomial regression modelsYear of diagnosisIntensive careHospital categoryMedicare beneficiariesSEER-MedicareHospitalization ratesCareCancer characteristicsNoninvasive ventilationHospitalIncorporating Medicare Advantage Admissions Into the CMS Hospital-Wide Readmission Measure
Kyanko K, Sahay K, Wang Y, Li S, Schreiber M, Hager M, Myers R, Johnson W, Zhang J, Krumholz H, Suter L, Triche E. Incorporating Medicare Advantage Admissions Into the CMS Hospital-Wide Readmission Measure. JAMA Network Open 2024, 7: e2414431. PMID: 38829614, PMCID: PMC11148674, DOI: 10.1001/jamanetworkopen.2024.14431.Peer-Reviewed Original ResearchConceptsCenters for Medicare & Medicaid ServicesSpecialty subgroupsPerformance quintileMedicare AdvantageReadmission ratesRisk-standardized readmission ratesHospital-wide readmission measureHospital outcome measuresTest-retest reliabilityRisk-adjustment variablesMeasurement reliabilityAdministrative claims dataReadmission measuresImprove measurement reliabilityIntegrated data repositoryMA beneficiariesQuintile rankingsMedicare beneficiariesMedicaid ServicesAll-causePublic reportingStudy assessed differencesClaims dataOutcome measuresMA cohortRacial Differences in 1-Year Mortality after Hospitalization for Chronic Obstructive Pulmonary Disease in the United States.
Jain S, Priya A, Pekow P, Spitzer K, Walkey A, Opara I, Krumholz H, Lindenauer P. Racial Differences in 1-Year Mortality after Hospitalization for Chronic Obstructive Pulmonary Disease in the United States. Annals Of The American Thoracic Society 2024, 21: 585-594. PMID: 37943953, PMCID: PMC10995557, DOI: 10.1513/annalsats.202304-359oc.Peer-Reviewed Original ResearchChronic obstructive pulmonary diseaseChronic obstructive pulmonary disease hospitalizationsObstructive pulmonary diseaseMedicare beneficiariesWhite racePulmonary diseaseChronic obstructive pulmonary disease exacerbationsChronic obstructive pulmonary disease patientsObstructive pulmonary disease exacerbationsObstructive pulmonary disease patientsHospital-level clusteringPulmonary disease exacerbationsRetrospective cohort studyPulmonary disease patientsCox regression modelIndividual socioeconomic statusDisease exacerbationPulmonary rehabilitationCohort studyDischarge dispositionOverall mortalityIllness severityHospitalized populationCare factorsDisease patientsRacial/Ethnic Disparities in Aortic Valve Replacement Among Medicare Beneficiaries in the United States, 2012-2019
Gupta A, Mori M, Wang Y, Pawar S, Vahl T, Nazif T, Onuma O, Yong C, Sharma R, Kirtane A, Forrest J, George I, Kodali S, Chikwe J, Geirsson A, Makkar R, Leon M, Krumholz H. Racial/Ethnic Disparities in Aortic Valve Replacement Among Medicare Beneficiaries in the United States, 2012-2019. The American Journal Of Medicine 2024, 137: 321-330.e7. PMID: 38190959, PMCID: PMC11019903, DOI: 10.1016/j.amjmed.2023.12.026.Peer-Reviewed Original ResearchAortic valve replacementRace/ethnicityValve replacementAortic stenosisWhite patientsMedicare beneficiariesSurgical aortic valve replacement (SAVR) proceduresCross-sectional cohort studyAortic valve replacement proceduresAortic stenosis treatmentRacial/Ethnic DisparitiesValve replacement proceduresSelf-reported race/ethnicityRace-related differencesIndex admissionIndex hospitalizationCohort studyAsian patientsPrincipal diagnosisProcedural outcomesStenosis treatmentCare spectrumPatientsEthnic disparitiesStenosis
2023
Patterns of Digoxin Prescribing for Medicare Beneficiaries in the United States 2013-2019
See C, Wheelock K, Caraballo C, Khera R, Annapureddy A, Mahajan S, Lu Y, Krumholz H, Murugiah K. Patterns of Digoxin Prescribing for Medicare Beneficiaries in the United States 2013-2019. American Journal Of Medicine Open 2023, 10: 100048. PMID: 38213879, PMCID: PMC10783702, DOI: 10.1016/j.ajmo.2023.100048.Peer-Reviewed Original ResearchDigoxin prescriptionDigoxin useNew heart failure therapiesGeneral medicine physiciansHeart failure therapyMedicare Part D dataPart D dataDigoxin prescribingFailure therapyPrescriber characteristicsMedicine physiciansMedicare beneficiariesPrescribersLikely maleLogistic regressionDigoxinNew prescribersPrescriptionRecent dataCardiology
2021
Clinician Trends in Prescribing Direct Oral Anticoagulants for US Medicare Beneficiaries
Wheelock KM, Ross JS, Murugiah K, Lin Z, Krumholz HM, Khera R. Clinician Trends in Prescribing Direct Oral Anticoagulants for US Medicare Beneficiaries. JAMA Network Open 2021, 4: e2137288. PMID: 34870678, PMCID: PMC8649845, DOI: 10.1001/jamanetworkopen.2021.37288.Peer-Reviewed Original ResearchConceptsDOAC useAnticoagulant prescriptionOral anticoagulantsUS cliniciansMedicare beneficiariesNational clinical practice guidelinesElevated bleeding riskOral anticoagulant prescriptionsRetrospective cohort studyDirect oral anticoagulantsClinical practice guidelinesUS Medicare beneficiariesInternal medicine physiciansNumber of cliniciansAnticoagulant prescribingDOAC prescriptionsUnique cliniciansBleeding riskCohort studyAnticoagulant strategiesPrescription claimsPractice guidelinesMAIN OUTCOMEMost indicationsMedicare populationPatterns of Prescribing Sodium-Glucose Cotransporter-2 Inhibitors for Medicare Beneficiaries in the United States
Sangha V, Lipska K, Lin Z, Inzucchi SE, McGuire DK, Krumholz HM, Khera R. Patterns of Prescribing Sodium-Glucose Cotransporter-2 Inhibitors for Medicare Beneficiaries in the United States. Circulation Cardiovascular Quality And Outcomes 2021, 14: e008381. PMID: 34779654, PMCID: PMC9022137, DOI: 10.1161/circoutcomes.121.008381.Peer-Reviewed Original ResearchConceptsType 2 diabetesMedicare beneficiariesSodium-glucose cotransporter 2 inhibitorsLarge randomized clinical trialsMedicare Part D prescriber dataChronic kidney diseaseCotransporter 2 inhibitorsAtherosclerotic cardiovascular diseasePercent of cliniciansRandomized clinical trialsUS Medicare beneficiariesAdvanced practice providersCross-sectional studyKidney outcomesSGLT2i useSulfonylurea prescriptionUnique cliniciansCardiovascular deathMedication classesKidney diseaseLabel indicationsClinical trialsSGLT2iCardiovascular diseasePractice providersNational Trends and Disparities in Hospitalization for Acute Hypertension Among Medicare Beneficiaries (1999–2019)
Lu Y, Wang Y, Spatz ES, Onuma O, Nasir K, Rodriguez F, Watson KE, Krumholz HM. National Trends and Disparities in Hospitalization for Acute Hypertension Among Medicare Beneficiaries (1999–2019). Circulation 2021, 144: 1683-1693. PMID: 34743531, DOI: 10.1161/circulationaha.121.057056.Peer-Reviewed Original ResearchConceptsHigher hospitalization ratesAcute hypertensionHospitalization ratesMedicare feeService beneficiariesBlack adultsSerial cross-sectional analysisCause readmission rateNational hospitalization ratesPrimary discharge diagnosisAnnual hospitalization rateCause mortality ratesPoisson link functionDual-eligible statusMedicare/MedicaidCross-sectional analysisHypertension controlReadmission ratesDischarge diagnosisDiseases codesMedicare denominatorInpatient filesHypertensionInternational ClassificationMedicare beneficiaries
2020
Unscheduled Care Access in the United States-A Tale of Two Emergency Departments
Venkatesh AK, Greenwood-Ericksen MB, Mei H, Rothenberg C, Lin Z, Krumholz HM. Unscheduled Care Access in the United States-A Tale of Two Emergency Departments. The American Journal Of Emergency Medicine 2020, 45: 374-377. PMID: 33143957, PMCID: PMC8076339, DOI: 10.1016/j.ajem.2020.08.095.Peer-Reviewed Original ResearchConceptsHospital referral regionsED visit ratesEmergency departmentCare ratesVisit ratesMedicare Chronic Conditions WarehouseHospital-based emergency departmentsRole of EDsChronic Conditions WarehouseProportion of beneficiariesDartmouth Atlas hospital referral regionHealthcare delivery systemED utilizationED visitsED useUnscheduled careReferral regionsUrban zip codesCare accessMedicare beneficiariesCare needsCare deliveryOffice settingCare capabilitiesDisproportionate barriersRevascularization Practices and Outcomes in Patients With Multivessel Coronary Artery Disease Who Presented With Acute Myocardial Infarction and Cardiogenic Shock in the US, 2009-2018
Khera R, Secemsky EA, Wang Y, Desai NR, Krumholz HM, Maddox TM, Shunk KA, Virani SS, Bhatt DL, Curtis J, Yeh RW. Revascularization Practices and Outcomes in Patients With Multivessel Coronary Artery Disease Who Presented With Acute Myocardial Infarction and Cardiogenic Shock in the US, 2009-2018. JAMA Internal Medicine 2020, 180: 1317-1327. PMID: 32833024, PMCID: PMC9377424, DOI: 10.1001/jamainternmed.2020.3276.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedCohort StudiesCoronary VesselsFemaleFollow-Up StudiesHospital MortalityHumansMaleMiddle AgedMyocardial InfarctionPatient DischargePercutaneous Coronary InterventionRisk AssessmentRisk FactorsShock, CardiogenicST Elevation Myocardial InfarctionTime FactorsTreatment OutcomeUnited StatesConceptsST-segment elevation myocardial infarctionMultivessel percutaneous coronary interventionMultivessel coronary artery diseasePercutaneous coronary interventionAcute myocardial infarctionCoronary artery diseaseCulprit vessel percutaneous coronary interventionCardiogenic shockHospital mortalityArtery diseaseMyocardial infarctionCohort studyPrimary outcomeHospital variationPCI strategyMedicare beneficiariesUnderwent multivessel PCISignificant hospital variationElevation myocardial infarctionSubset of patientsHigh-risk populationRecent evidenceHospital complicationsPCI useRevascularization practiceWhere Skilled Nursing Facility Residents Get Acute Care: Is the Emergency Department the Medical Home?
Venkatesh AK, Gettel CJ, Mei H, Chou SC, Rothenberg C, Liu SL, D’Onofrio G, Lin Z, Krumholz HM. Where Skilled Nursing Facility Residents Get Acute Care: Is the Emergency Department the Medical Home? Journal Of Applied Gerontology 2020, 40: 828-836. PMID: 32842827, PMCID: PMC7904961, DOI: 10.1177/0733464820950125.Peer-Reviewed Original ResearchConceptsAcute care visitsCare visitsEmergency departmentMedicare beneficiariesSNF staySNF servicesSkilled nursing facility residentsNursing facility residentsSkilled nursing facility servicesAcute care capabilitiesCross-sectional analysisNursing facility servicesHigher proportionAcute careMedical homeFacility residentsCare capabilitiesVisitsNumber of daysStayCareDepartmentFacility servicesBeneficiariesProportionCross‐sectional Analysis of Emergency Department and Acute Care Utilization Among Medicare Beneficiaries
Venkatesh AK, Mei H, Shuling L, D’Onofrio G, Rothenberg C, Lin Z, Krumholz HM. Cross‐sectional Analysis of Emergency Department and Acute Care Utilization Among Medicare Beneficiaries. Academic Emergency Medicine 2020, 27: 570-579. PMID: 32302034, DOI: 10.1111/acem.13971.Peer-Reviewed Original ResearchConceptsMultiple chronic conditionsEmergency departmentUnscheduled careMedicare beneficiariesCross-sectional analysisVisit ratesCare servicesHighest ED visit ratesNumber of EDVulnerable subpopulationsSkilled nursing facility useAmbulatory office settingNon-ED settingsUnscheduled care servicesAcute care utilizationED visit ratesOffice-based visitsAcute care servicesClaims-based definitionNursing facility useMedicare beneficiaries age 65Dual-eligible beneficiariesOlder adult populationBeneficiaries age 65Care visits
2019
Association of Hospital Payment Profiles With Variation in 30-Day Medicare Cost for Inpatients With Heart Failure or Pneumonia
Krumholz HM, Wang Y, Wang K, Lin Z, Bernheim SM, Xu X, Desai NR, Normand ST. Association of Hospital Payment Profiles With Variation in 30-Day Medicare Cost for Inpatients With Heart Failure or Pneumonia. JAMA Network Open 2019, 2: e1915604. PMID: 31730185, PMCID: PMC6902811, DOI: 10.1001/jamanetworkopen.2019.15604.Peer-Reviewed Original ResearchConceptsHeart failureSame patientSame diagnosisMortality rateRisk-standardized mortality ratesHighest quartile hospitalsObservational cohort studyMedian hospitalQuartile hospitalsIndex hospitalizationCohort studyCritical access hospitalsPatient characteristicsHospital variationAcute careEpisode paymentsPrincipal diagnosisMAIN OUTCOMEMedicare feePneumoniaMedicare beneficiariesPatientsCase mixService Part ADifferent hospitalsAssociation of in-hospital resource utilization with post-acute spending in Medicare beneficiaries hospitalized for acute myocardial infarction: a cross-sectional study
Nuti SV, Li SX, Xu X, Ott LS, Lagu T, Desai NR, Murugiah K, Duan M, Martin J, Kim N, Krumholz HM. Association of in-hospital resource utilization with post-acute spending in Medicare beneficiaries hospitalized for acute myocardial infarction: a cross-sectional study. BMC Health Services Research 2019, 19: 190. PMID: 30909904, PMCID: PMC6432744, DOI: 10.1186/s12913-019-4018-0.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionMyocardial infarctionPost-acute care costsPost-acute care utilizationOverall episode costsPremier Healthcare DatabaseHospital resource utilizationStudy of patientsCross-sectional studyGreater resource utilizationPost-acute periodHigh cost tertilesHigh-cost hospitalsHospital meanResultsAmong patientsReadmission ratesCare utilizationHospitalization costsEpisode costsMedicare feeTertileMedicare beneficiariesMortality rateHealthcare databasesService beneficiaries
2018
Variation in and Hospital Characteristics Associated With the Value of Care for Medicare Beneficiaries With Acute Myocardial Infarction, Heart Failure, and Pneumonia
Desai NR, Ott LS, George EJ, Xu X, Kim N, Zhou S, Hsieh A, Nuti SV, Lin Z, Bernheim SM, Krumholz HM. Variation in and Hospital Characteristics Associated With the Value of Care for Medicare Beneficiaries With Acute Myocardial Infarction, Heart Failure, and Pneumonia. JAMA Network Open 2018, 1: e183519. PMID: 30646247, PMCID: PMC6324438, DOI: 10.1001/jamanetworkopen.2018.3519.Peer-Reviewed Original ResearchConceptsRisk-standardized mortality ratesAcute myocardial infarctionHeart failureHigh-value careHospital characteristicsValue of careMyocardial infarctionNational cross-sectional studyHospital risk-standardized mortality ratesMedian risk-standardized mortality rateProportion of patientsSafety-net statusAcute care hospitalsCross-sectional studyLow socioeconomic statusCharacteristics of hospitalsValue-based payment modelsWeak inverse correlationCare hospitalHospital variationHospital typeHospitalizationMAIN OUTCOMEPneumoniaMedicare beneficiariesAssociation of the Hospital Readmissions Reduction Program With Mortality During and After Hospitalization for Acute Myocardial Infarction, Heart Failure, and Pneumonia
Khera R, Dharmarajan K, Wang Y, Lin Z, Bernheim SM, Wang Y, Normand ST, Krumholz HM. Association of the Hospital Readmissions Reduction Program With Mortality During and After Hospitalization for Acute Myocardial Infarction, Heart Failure, and Pneumonia. JAMA Network Open 2018, 1: e182777. PMID: 30646181, PMCID: PMC6324473, DOI: 10.1001/jamanetworkopen.2018.2777.Peer-Reviewed Original ResearchConceptsHospital Readmissions Reduction ProgramAcute myocardial infarctionPostdischarge mortalityHeart failureHRRP announcementReadmissions Reduction ProgramMedicare beneficiariesRisk-adjusted ratesMyocardial infarctionService Medicare beneficiariesReduction programsInterrupted time series frameworkHospital mortalityReduced readmissionsCohort studyPneumonia hospitalizationsReadmission ratesMAIN OUTCOMEPneumoniaMedicare dataHospitalizationHospitalMortalityReadmissionConcomitant harmTrends in 30-Day Readmission Rates for Medicare and Non-Medicare Patients in the Era of the Affordable Care Act
Angraal S, Khera R, Zhou S, Wang Y, Lin Z, Dharmarajan K, Desai NR, Bernheim SM, Drye EE, Nasir K, Horwitz LI, Krumholz HM. Trends in 30-Day Readmission Rates for Medicare and Non-Medicare Patients in the Era of the Affordable Care Act. The American Journal Of Medicine 2018, 131: 1324-1331.e14. PMID: 30016636, PMCID: PMC6380174, DOI: 10.1016/j.amjmed.2018.06.013.Peer-Reviewed Original ResearchConceptsHospital Readmissions Reduction ProgramReadmission ratesAcute myocardial infarctionHeart failurePatient groupMyocardial infarctionCause readmission rateNationwide Readmissions DatabaseReadmissions Reduction ProgramNon-Medicare patientsNon-target conditionsLower readmissionAffordable Care ActMedicare beneficiariesAge groupsPrivate insuranceCare ActPneumoniaInfarctionPatientsReduction programsMedicareGroupReadmissionFailureAssociation of the Overall Well-being of a Population With Health Care Spending for People 65 Years of Age or Older
Riley C, Roy B, Herrin J, Spatz ES, Arora A, Kell KP, Rula EY, Krumholz HM. Association of the Overall Well-being of a Population With Health Care Spending for People 65 Years of Age or Older. JAMA Network Open 2018, 1: e182136. PMID: 30646154, PMCID: PMC6324481, DOI: 10.1001/jamanetworkopen.2018.2136.Peer-Reviewed Original ResearchConceptsMedicare FFS beneficiariesPeople 65 yearsHealth care spendingFFS beneficiariesCare spendingPopulation-based cross-sectional studyLower health care spendingHealth care system capacityCross-sectional studyHealth care systemPopulation levelPayment modelsCare payment modelsHighest quintileInverse associationStudy interventionMAIN OUTCOMEMedicare feeMedicare beneficiariesUS national studyOverall healthMedian household incomeBeing IndexCare systemDemographic characteristicsSex and Race Differences in the Utilization and Outcomes of Coronary Artery Bypass Grafting Among Medicare Beneficiaries, 1999–2014
Angraal S, Khera R, Wang Y, Lu Y, Jean R, Dreyer RP, Geirsson A, Desai NR, Krumholz HM. Sex and Race Differences in the Utilization and Outcomes of Coronary Artery Bypass Grafting Among Medicare Beneficiaries, 1999–2014. Journal Of The American Heart Association 2018, 7: e009014. PMID: 30005557, PMCID: PMC6064835, DOI: 10.1161/jaha.118.009014.Peer-Reviewed Original ResearchConceptsCoronary artery bypassCABG utilizationArtery bypassUse of CABGService Medicare beneficiariesCalendar year trendsCABG mortalityUnderwent CABGReadmission ratesCABG proceduresWhite patientsBlack patientsPatient groupMedicare beneficiariesMedicare feeMortality rateCABGAnnual declineWomenRacial subgroupsRacial differencesGreater declineOutcomesPatientsSex