2018
Association 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 harmSex 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
2017
Quality of Care in the United States Territories, 1999–2012
Nuti SV, Wang Y, Masoudi FA, Nunez-Smith M, Normand ST, Murugiah K, Rodríguez-Vilá O, Ross JS, Krumholz HM. Quality of Care in the United States Territories, 1999–2012. Medical Care 2017, 55: 886-892. PMID: 28906314, PMCID: PMC6482857, DOI: 10.1097/mlr.0000000000000797.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionHeart failureHospitalization ratesMedicare beneficiariesMortality rateService Medicare beneficiariesQuality of careRecent study periodPneumonia hospitalizationsMyocardial infarctionPatient outcomesMillions of AmericansMedicare feeHealth outcomesPneumoniaService beneficiariesHospital reimbursementUnique beneficiariesHealth equityStudy periodPatient paymentsInpatient paymentsHealth careMortalityCare
2015
USE OF ADVANCED THERAPIES FOR ACUTE PULMONARY EMBOLISM AND RELATED OUTCOMES AMONG FEE-FOR-SERVICE MEDICARE BENEFICIARIES FROM 1999 TO 2010
Bikdeli B, Wang Y, Minges K, Desai N, Kim N, Desai M, Spertus J, Masoudi F, Nallamothu B, Goldhaber S, Krumholz H. USE OF ADVANCED THERAPIES FOR ACUTE PULMONARY EMBOLISM AND RELATED OUTCOMES AMONG FEE-FOR-SERVICE MEDICARE BENEFICIARIES FROM 1999 TO 2010. Journal Of The American College Of Cardiology 2015, 65: a2128. DOI: 10.1016/s0735-1097(15)62128-3.Peer-Reviewed Original ResearchAcute pulmonary embolismService Medicare beneficiariesPulmonary embolismMedicare beneficiariesRelated outcomesEmbolism
2012
Based On Key Measures, Care Quality For Medicare Enrollees At Safety-Net And Non-Safety-Net Hospitals Was Almost Equal
Ross JS, Bernheim SM, Lin Z, Drye EE, Chen J, Normand SL, Krumholz HM. Based On Key Measures, Care Quality For Medicare Enrollees At Safety-Net And Non-Safety-Net Hospitals Was Almost Equal. Health Affairs 2012, 31: 1739-1748. PMID: 22869652, PMCID: PMC3527010, DOI: 10.1377/hlthaff.2011.1028.Peer-Reviewed Original ResearchConceptsSafety-net hospitalNet hospitalReadmission ratesUrban hospitalHeart failure mortalityRisk-standardized ratesAcute myocardial infarctionIndicators of careService Medicare beneficiariesHeart failureClinical outcomesMyocardial infarctionWorse outcomesMedicare beneficiariesHospitalMedicare enrolleesHospital qualityCare qualityVulnerable populationsGreater financial strainOutcomesMortalityFinancial strainCareMore affluent populations
2011
National and Regional Trends in Heart Failure Hospitalization and Mortality Rates for Medicare Beneficiaries, 1998-2008
Chen J, Normand SL, Wang Y, Krumholz HM. National and Regional Trends in Heart Failure Hospitalization and Mortality Rates for Medicare Beneficiaries, 1998-2008. JAMA 2011, 306: 1669-1678. PMID: 22009099, PMCID: PMC3688069, DOI: 10.1001/jama.2011.1474.Peer-Reviewed Original ResearchConceptsHF hospitalization ratesHeart failure hospitalizationHospitalization ratesMortality rateFailure hospitalizationHeart failure hospitalization ratesPrincipal discharge diagnosis codeOne-year mortality rateDischarge diagnosis codesIschemic heart diseaseAcute care hospitalsService Medicare beneficiariesLower ratesBlack menHF hospitalizationPatient demographicsCare hospitalDiagnosis codesHeart diseaseRisk factorsMedicare beneficiariesHospitalizationStudy periodMortalityNational meanOperator Experience and Carotid Stenting Outcomes in Medicare Beneficiaries
Nallamothu BK, Gurm HS, Ting HH, Goodney PP, Rogers MA, Curtis JP, Dimick JB, Bates ER, Krumholz HM, Birkmeyer JD. Operator Experience and Carotid Stenting Outcomes in Medicare Beneficiaries. JAMA 2011, 306: 1338-1343. PMID: 21954477, PMCID: PMC3208144, DOI: 10.1001/jama.2011.1357.Peer-Reviewed Original ResearchMeSH KeywordsAge FactorsAgedAged, 80 and overAtherosclerosisCarotid StenosisCenters for Medicare and Medicaid Services, U.S.Clinical CompetenceFee-for-Service PlansFemaleHospital MortalityHumansInsurance CoverageMaleMedicarePhysiciansQuality of Health CareRetrospective StudiesStentsStrokeTime FactorsTreatment OutcomeUnited StatesConceptsAnnual operator volumeCarotid stentingOperator volumeMedicare beneficiariesNational coverage decisionHigh riskOperator experienceStudy periodThirty-day mortalityEmbolic protection devicesHigh-volume operatorsLow-volume operatorsService Medicare beneficiariesLow annual volumeMultivariable adjustmentOlder patientsRate of failureClinical trialsCoverage decisionsObservational studyMAIN OUTCOMEPatientsClinical practiceStentingMore procedures
2010
Use of Administrative Claims Models to Assess 30-Day Mortality Among Veterans Health Administration Hospitals
Ross JS, Maynard C, Krumholz HM, Sun H, Rumsfeld JS, Normand SL, Wang Y, Fihn SD. Use of Administrative Claims Models to Assess 30-Day Mortality Among Veterans Health Administration Hospitals. Medical Care 2010, 48: 652-658. PMID: 20548253, PMCID: PMC3020977, DOI: 10.1097/mlr.0b013e3181dbe35d.Peer-Reviewed Original ResearchConceptsStatistical modelAcute myocardial infarctionVeterans Health Administration hospitalsVHA hospitalsHeart failurePneumonia hospitalizationsC-statisticNon-federal hospitalsMedian numberModest heterogeneityAdministration HospitalAdministrative claims dataService Medicare beneficiariesYears of ageThe performance of US hospitals as reflected in risk‐standardized 30‐day mortality and readmission rates for medicare beneficiaries with pneumonia
Lindenauer PK, Bernheim SM, Grady JN, Lin Z, Wang Y, Wang Y, Merrill AR, Han LF, Rapp MT, Drye EE, Normand S, Krumholz HM. The performance of US hospitals as reflected in risk‐standardized 30‐day mortality and readmission rates for medicare beneficiaries with pneumonia. Journal Of Hospital Medicine 2010, 5: e12-e18. PMID: 20665626, DOI: 10.1002/jhm.822.Peer-Reviewed Original ResearchConceptsRisk-standardized mortality ratesReadmission ratesHospital referral regionsReferral regionsMedicare beneficiariesMortality rateRisk-standardized readmission ratesNonfederal acute care hospitalsNational quality improvement effortsPattern of hospitalAcute care hospitalsCross-sectional studyService Medicare beneficiariesQuality improvement effortsMedian hospitalHospital dischargeElderly patientsHospital admissionCare hospitalReadmission analysisOutpatient MedicareLeading causePrincipal diagnosisPneumoniaPatients
2007
Temporal Trends of Outcomes for Nonagenarians Undergoing Coronary Artery Bypass Grafting, 1993 to 1999
Lichtman JH, Kapoor R, Wang Y, Radford MJ, Allen NB, Krumholz HM. Temporal Trends of Outcomes for Nonagenarians Undergoing Coronary Artery Bypass Grafting, 1993 to 1999. The American Journal Of Cardiology 2007, 100: 1630-1634. PMID: 18036360, DOI: 10.1016/j.amjcard.2007.06.067.Peer-Reviewed Original ResearchConceptsCABG proceduresMortality outcomesMortality rateLong-term mortality outcomesShort-term mortality outcomesOverall crude mortality rateService Medicare patientsCoronary artery bypassLength of stayCrude mortality rateService Medicare beneficiariesSkilled nursing facilitiesHigh mortality rateProjected life expectancyNumber of proceduresArtery bypassDischarge dispositionMedicare patientsMedicare beneficiariesNursing facilitiesNonagenariansMean lengthTemporal trendsLife expectancyWomen
2006
Regional Differences in Process of Care and Outcomes for Older Acute Myocardial Infarction Patients in the United States and Ontario, Canada
Ko DT, Krumholz HM, Wang Y, Foody JM, Masoudi FA, Havranek EP, You JJ, Alter DA, Stukel TA, Newman AM, Tu JV. Regional Differences in Process of Care and Outcomes for Older Acute Myocardial Infarction Patients in the United States and Ontario, Canada. Circulation 2006, 115: 196-203. PMID: 17190861, DOI: 10.1161/circulationaha.106.657601.Peer-Reviewed Original ResearchConceptsRisk-standardized mortality ratesTreatment patternsAMI patientsMortality rateOlder acute myocardial infarction patientsInvasive cardiac procedure useAcute myocardial infarction treatmentAcute myocardial infarction patientsBeta-blocker useCardiac catheterization useCardiac procedure useEnzyme inhibitor useMyocardial infarction patientsProcess of careService Medicare beneficiariesHealth care delivery systemSimilar treatment patternsMyocardial infarction treatmentCare delivery systemInvasive cardiac therapyBaseline characteristicsInhibitor useMedication useIllness severityRandomized trials
2004
Regional variations in racial differences in the treatment of elderly patients hospitalized with acute myocardial infarction
Rathore SS, Masoudi FA, Havranek EP, Krumholz HM. Regional variations in racial differences in the treatment of elderly patients hospitalized with acute myocardial infarction. The American Journal Of Medicine 2004, 117: 811-822. PMID: 15589484, PMCID: PMC2790535, DOI: 10.1016/j.amjmed.2004.06.034.Peer-Reviewed Original ResearchConceptsBeta-blocker useMyocardial infarctionWhite patientsCoronary revascularizationBlack patientsRacial differencesCardiac catheterization useLower crude ratesUse of aspirinDay of admissionHealth care useTreatment of patientsAcute myocardial infarctionService Medicare beneficiariesMedical record dataQuality of careElderly feeRevascularization useAspirin useMultivariable adjustmentElderly patientsCardiac catheterizationCardiac proceduresCare useCrude rate
2003
Race, Quality of Care, and Outcomes of Elderly Patients Hospitalized With Heart Failure
Rathore SS, Foody JM, Wang Y, Smith GL, Herrin J, Masoudi FA, Wolfe P, Havranek EP, Ordin DL, Krumholz HM. Race, Quality of Care, and Outcomes of Elderly Patients Hospitalized With Heart Failure. JAMA 2003, 289: 2517-2524. PMID: 12759323, DOI: 10.1001/jama.289.19.2517.Peer-Reviewed Original ResearchMeSH KeywordsAgedAngiotensin-Converting Enzyme InhibitorsBlack or African AmericanFee-for-Service PlansFemaleHeart FailureHospitalsHumansMaleMedicareMultivariate AnalysisOutcome Assessment, Health CarePatient ReadmissionQuality of Health CareRetrospective StudiesSurvival AnalysisUnited StatesVentricular Function, LeftWhite PeopleConceptsLeft ventricular ejection fractionQuality of careACE inhibitor useWhite patientsBlack patientsHeart failureYear of dischargeACE inhibitorsMultivariable adjustmentInhibitor useLVEF assessmentCrude rateMedicare beneficiariesMortality rateAngiotensin receptor blocker useNational Heart Failure ProjectBlack Medicare patientsHeart Failure ProjectPrescription of angiotensinReceptor blocker useHigh rateVentricular ejection fractionYear of admissionHigher crude ratesService Medicare beneficiaries