2018
Sex differences in health outcomes at one year following acute myocardial infarction: A report from the China Patient-Centered Evaluative Assessment of Cardiac Events prospective acute myocardial infarction study
Dreyer RP, Zheng X, Xu X, Liu S, Li J, Ding Q, Du X, Li X, Zhang H, Masoudi FA, Spertus JA, Krumholz HM, Jiang L. Sex differences in health outcomes at one year following acute myocardial infarction: A report from the China Patient-Centered Evaluative Assessment of Cardiac Events prospective acute myocardial infarction study. European Heart Journal Acute Cardiovascular Care 2018, 8: 273-282. PMID: 30270637, DOI: 10.1177/2048872618803726.Peer-Reviewed Original ResearchConceptsMajor adverse cardiac eventsDisease-specific health statusAdverse cardiac eventsAcute myocardial infarctionGeneric health statusMyocardial infarctionCardiac eventsFemale sexHealth statusWeekly anginaChina PatientHealth outcomesAcute Myocardial Infarction StudyPost-acute myocardial infarctionAcute myocardial infarction patientsLong-term health outcomesCardiac Events (PEACE) studyMyocardial Infarction StudyMyocardial infarction patientsSpecific health statusHigher crude ratesSex differencesCardiovascular deathMultivariable analysisInfarction patientsAdmission diagnoses among patients with heart failure: Variation by ACO performance on a measure of risk-standardized acute admission rates
Benchetrit L, Zimmerman C, Bao H, Dharmarajan K, Altaf F, Herrin J, Lin Z, Krumholz HM, Drye EE, Lipska KJ, Spatz ES. Admission diagnoses among patients with heart failure: Variation by ACO performance on a measure of risk-standardized acute admission rates. American Heart Journal 2018, 207: 19-26. PMID: 30404047, DOI: 10.1016/j.ahj.2018.09.006.Peer-Reviewed Original ResearchMeSH KeywordsAccountable Care OrganizationsAgedAlgorithmsAnalysis of VarianceCardiovascular DiseasesComorbidityFemaleHeart FailureHospitalizationHumansInternational Classification of DiseasesMaleMedicare Part AMedicare Part BPatient AdmissionPatient DischargePatient-Centered CareSex DistributionTime FactorsUnited StatesConceptsHeart failureAccountable care organizationsMean admission rateAdmission ratesAdmission typeAcute admission ratesNoncardiovascular conditionsAdmission diagnosisCause admission ratesMedicare Shared Savings Program Accountable Care OrganizationsRate of hospitalizationPrincipal discharge diagnosisProportion of admissionsType of admissionNoncardiovascular causesHF admissionsHF patientsPerson yearsDischarge diagnosisPatient populationPatientsAdmissionKey quality metricDiagnosisSubstantial proportion
2017
Sex Differences in Trajectories of Risk After Rehospitalization for Heart Failure, Acute Myocardial Infarction, or Pneumonia
Dreyer RP, Dharmarajan K, Hsieh AF, Welsh J, Qin L, Krumholz HM. Sex Differences in Trajectories of Risk After Rehospitalization for Heart Failure, Acute Myocardial Infarction, or Pneumonia. Circulation Cardiovascular Quality And Outcomes 2017, 10: e003271. PMID: 28506980, PMCID: PMC5650228, DOI: 10.1161/circoutcomes.116.003271.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionMyocardial infarctionHeart failureReadmission riskDaily riskImmediate postdischarge periodRisk of rehospitalizationSex differencesDeath 1 yearPrincipal discharge diagnosisHospitalization of patientsAssociation of sexRehospitalization riskPostdischarge periodDischarge diagnosisMedicare patientsHigh riskMortality riskMedicare feeTrajectories of riskRehospitalizationInfarctionService beneficiariesHospitalizationPneumonia
2016
Editor’s Choice-Sex differences in young patients with acute myocardial infarction: A VIRGO study analysis
Bucholz EM, Strait KM, Dreyer RP, Lindau ST, D’Onofrio G, Geda M, Spatz ES, Beltrame JF, Lichtman JH, Lorenze NP, Bueno H, Krumholz HM. Editor’s Choice-Sex differences in young patients with acute myocardial infarction: A VIRGO study analysis. European Heart Journal Acute Cardiovascular Care 2016, 6: 610-622. PMID: 27485141, PMCID: PMC5459677, DOI: 10.1177/2048872616661847.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionMyocardial infarctionYoung womenTime of AMIST-segment elevation myocardial infarctionHigh clinical risk scoreSegment elevation myocardial infarctionChronic obstructive pulmonary diseaseYoung AMI patientsCardiovascular risk factorsClinical risk scorePre-hospital delayProspective cohort studyCongestive heart failureElevation myocardial infarctionObstructive pulmonary diseaseHigh-risk populationYoung menMental health statusElectrocardiogram findingsMorbid obesityCardiovascular riskCohort studyRenal failureYounger patientsProtocol for the China PEACE (Patient-centered Evaluative Assessment of Cardiac Events) Million Persons Project pilot
Lu J, Xuan S, Downing NS, Wu C, Li L, Krumholz HM, Jiang L. Protocol for the China PEACE (Patient-centered Evaluative Assessment of Cardiac Events) Million Persons Project pilot. BMJ Open 2016, 6: e010200. PMID: 26729395, PMCID: PMC4716208, DOI: 10.1136/bmjopen-2015-010200.Peer-Reviewed Original ResearchConceptsHigh-risk subjectsCardiovascular diseaseBlood pressureMedical historyFurther health assessmentsLipid blood testsMillion Persons ProjectPotential lifestyle changesReturn clinic visitsPopulation-based assessmentCommunity-dwelling residentsHealth-related behaviorsCollection of bloodBaseline characteristicsClinic visitsBlood testsLeading causeSurvival statusLifestyle changesHigh riskUrine analysisHealth statusAnthropometric variablesTelephone interviewsCentral Ethics Committee
2015
Trends in Short- and Long-Term Outcomes for Takotsubo Cardiomyopathy Among Medicare Fee-for-Service Beneficiaries, 2007 to 2012
Murugiah K, Wang Y, Desai NR, Spatz ES, Nuti SV, Dreyer RP, Krumholz HM. Trends in Short- and Long-Term Outcomes for Takotsubo Cardiomyopathy Among Medicare Fee-for-Service Beneficiaries, 2007 to 2012. JACC Heart Failure 2015, 4: 197-205. PMID: 26746377, PMCID: PMC5323042, DOI: 10.1016/j.jchf.2015.09.013.Peer-Reviewed Original ResearchConceptsLong-term outcomesReadmission ratesNonwhite patientsHospitalization ratesSecondary diagnosisMedicare feeYears of ageTakotsubo cardiomyopathyWorse outcomesWhite racePatientsService beneficiariesHospitalMortalityTime pointsOutcomesHospitalizationCohortDiagnosisRepresentative dataTakotsuboTTCReadmissionCardiomyopathyYearsDifferences in Colonoscopy Quality Among Facilities: Development of a Post-Colonoscopy Risk-Standardized Rate of Unplanned Hospital Visits
Ranasinghe I, Parzynski CS, Searfoss R, Montague J, Lin Z, Allen J, Vender R, Bhat K, Ross JS, Bernheim S, Krumholz HM, Drye EE. Differences in Colonoscopy Quality Among Facilities: Development of a Post-Colonoscopy Risk-Standardized Rate of Unplanned Hospital Visits. Gastroenterology 2015, 150: 103-113. PMID: 26404952, DOI: 10.1053/j.gastro.2015.09.009.Peer-Reviewed Original ResearchConceptsUnplanned hospital visitsDay of colonoscopyHospital visitsOutpatient facilitiesColonoscopy qualityHealthcare costsRisk-standardized ratesHospital outpatient departmentsUtilization Project dataAmbulatory surgery centersLogistic regression modelsHierarchical logistic regressionQuality improvement effortsPrior arrhythmiaAbdominal painElectrolyte imbalanceOutpatient departmentSurgery centersCommon causeHospital careOutcome measuresPsychiatric disordersColonoscopyUtilization ProjectPatient choiceFrequency and Effects of Excess Dosing of Anticoagulants in Patients ≤55 Years With Acute Myocardial Infarction Who Underwent Percutaneous Coronary Intervention (from the VIRGO Study)
Gupta A, Chui P, Zhou S, Spertus JA, Geda M, Lorenze N, Lee I, Onofrio G, Lichtman JH, Alexander KP, Krumholz HM, Curtis JP. Frequency and Effects of Excess Dosing of Anticoagulants in Patients ≤55 Years With Acute Myocardial Infarction Who Underwent Percutaneous Coronary Intervention (from the VIRGO Study). The American Journal Of Cardiology 2015, 116: 1-7. PMID: 25937348, PMCID: PMC4466069, DOI: 10.1016/j.amjcard.2015.03.032.Peer-Reviewed Original ResearchMeSH KeywordsAdultAge DistributionAngioplasty, Balloon, CoronaryAnticoagulantsAntithrombinsBody Mass IndexCohort StudiesFemaleHemorrhageHeparinHirudinsHumansMaleMiddle AgedMyocardial InfarctionPeptide FragmentsPercutaneous Coronary InterventionPlatelet Glycoprotein GPIIb-IIIa ComplexPrevalenceRecombinant ProteinsRisk AssessmentRisk FactorsSex DistributionTreatment OutcomeUnited StatesConceptsPercutaneous coronary interventionGlycoprotein IIb/IIIa inhibitorsIIb/IIIa inhibitorsExcess dosingAcute myocardial infarctionCoronary interventionMultivariable analysisMyocardial infarctionUnderwent Percutaneous Coronary InterventionLower body weightOlder patientsYounger patientsUnfractionated heparinMedical recordsUnivariate analysisAnticoagulant agentsAnticoagulant drugsBody weightPatientsDosingYounger ageLogistic regressionYoung womenAnticoagulantsGender-based differences
2014
Trends in Acute Myocardial Infarction in Young Patients and Differences by Sex and Race, 2001 to 2010
Gupta A, Wang Y, Spertus JA, Geda M, Lorenze N, Nkonde-Price C, D'Onofrio G, Lichtman JH, Krumholz HM. Trends in Acute Myocardial Infarction in Young Patients and Differences by Sex and Race, 2001 to 2010. Journal Of The American College Of Cardiology 2014, 64: 337-345. PMID: 25060366, PMCID: PMC4415523, DOI: 10.1016/j.jacc.2014.04.054.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionLength of stayHospital mortalityHospitalization ratesClinical characteristicsAge groupsAMI hospitalization ratesYounger patientsMyocardial infarctionLonger LOSNationwide Inpatient Sample dataYoung womenU.S. hospital dischargesPrevalence of comorbiditiesPrincipal discharge diagnosisNational Inpatient SampleSex differencesContemporary longitudinal dataLarge national datasetMore comorbiditiesHospital dischargeDischarge diagnosisInpatient SampleMortality rateAge 30
2013
Age and sex differences in inhospital complication rates and mortality after percutaneous coronary intervention procedures: Evidence from the NCDR®
Lichtman JH, Wang Y, Jones SB, Leifheit-Limson EC, Shaw LJ, Vaccarino V, Rumsfeld JS, Krumholz HM, Curtis JP. Age and sex differences in inhospital complication rates and mortality after percutaneous coronary intervention procedures: Evidence from the NCDR®. American Heart Journal 2013, 167: 376-383. PMID: 24576523, DOI: 10.1016/j.ahj.2013.11.001.Peer-Reviewed Original ResearchConceptsPercutaneous coronary interventionComplication rateOlder womenPCI typeYoung womenInhospital mortalityMortality riskAge groupsElective percutaneous coronary interventionPercutaneous coronary intervention (PCI) proceduresInhospital complication rateRate of complicationsHigh complication rateRisk-adjusted analysisRisk-adjusted mortalityCoronary intervention proceduresUnadjusted complication rateSex-based differencesPCI patientsCathPCI RegistryCoronary interventionYounger patientsClinical factorsHospital admissionMore complicationsTrends in Hospitalization Rates and Outcomes of Endocarditis Among Medicare Beneficiaries
Bikdeli B, Wang Y, Kim N, Desai MM, Quagliarello V, Krumholz HM. Trends in Hospitalization Rates and Outcomes of Endocarditis Among Medicare Beneficiaries. Journal Of The American College Of Cardiology 2013, 62: 2217-2226. PMID: 23994421, PMCID: PMC4335801, DOI: 10.1016/j.jacc.2013.07.071.Peer-Reviewed Original ResearchNational Trends in Heart Failure Hospital Stay Rates, 2001 to 2009
Chen J, Dharmarajan K, Wang Y, Krumholz HM. National Trends in Heart Failure Hospital Stay Rates, 2001 to 2009. Journal Of The American College Of Cardiology 2013, 61: 1078-1088. PMID: 23473413, PMCID: PMC3939721, DOI: 10.1016/j.jacc.2012.11.057.Peer-Reviewed Original ResearchConceptsHospital stay ratesLength of stayHF hospital stayHospital mortalityYears of ageHospital stayPatients 18Stay ratesNational Inpatient Sample dataU.S. hospital dischargesPatients 65 yearsPrimary discharge diagnosisSignificant declineOlder Medicare beneficiariesNational Inpatient SampleBlack menLarge national datasetHospital dischargeOlder patientsPatients 55Younger patientsDischarge diagnosisInpatient SampleMedicare beneficiariesAge 65
2012
Recent Trends in Hospitalization for Acute Myocardial Infarction
Wang OJ, Wang Y, Chen J, Krumholz HM. Recent Trends in Hospitalization for Acute Myocardial Infarction. The American Journal Of Cardiology 2012, 109: 1589-1593. PMID: 22440114, PMCID: PMC3351562, DOI: 10.1016/j.amjcard.2012.01.381.Peer-Reviewed Original Research
2009
Exposure to Low-Dose Ionizing Radiation from Medical Imaging Procedures
Fazel R, Krumholz HM, Wang Y, Ross JS, Chen J, Ting HH, Shah ND, Nasir K, Einstein AJ, Nallamothu BK. Exposure to Low-Dose Ionizing Radiation from Medical Imaging Procedures. New England Journal Of Medicine 2009, 361: 849-857. PMID: 19710483, PMCID: PMC3707303, DOI: 10.1056/nejmoa0901249.Peer-Reviewed Original ResearchConceptsCumulative effective dosesCumulative effective doseEffective dosesEffective doseMean cumulative effective doseImaging proceduresLow-dose ionizing radiationPopulation-based ratesMedian effective doseOutpatient settingGeneral populationHigh dosesUtilization dataDosesEnrolleesStudy periodRadiation exposureNuclear imagingDoseAnnual effective dosesMedical imaging proceduresUnited StatesExposureHealth care marketYears
2007
Acute Myocardial Infarction and Congestive Heart Failure Outcomes at Specialty Cardiac Hospitals
Nallamothu BK, Wang Y, Cram P, Birkmeyer JD, Ross JS, Normand SL, Krumholz HM. Acute Myocardial Infarction and Congestive Heart Failure Outcomes at Specialty Cardiac Hospitals. Circulation 2007, 116: 2280-2287. PMID: 17967975, DOI: 10.1161/circulationaha.107.709220.Peer-Reviewed Original ResearchConceptsCongestive heart failureRisk-standardized mortality ratesAcute myocardial infarctionStandardized mortality ratioSpecialty cardiac hospitalsCardiac hospitalGeneral HospitalMortality ratioMortality rateMyocardial infarctionCongestive heart failure outcomesHeart failure outcomesOutcomes of patientsProportion of facilitiesHeart failureNoncardiovascular diseasesLow prevalencePatient differencesMedicare dataPatientsHospitalFailure outcomesInfarctionOutcomesType of facilityDoes Health Status Differ between Men And Women in Early Recovery after Myocardial Infarction
Garavalia LS, Decker C, Reid KJ, Lichtman JH, Parashar S, Vaccarino V, Krumholz HM, Spertus JA. Does Health Status Differ between Men And Women in Early Recovery after Myocardial Infarction. Journal Of Women's Health 2007, 16: 93-101. PMID: 17324100, DOI: 10.1089/jwh.2006.m073.Peer-Reviewed Original ResearchConceptsMyocardial infarctionHealth statusNon-ST segment elevation myocardial infarctionRisk-adjusted multivariable modelsSegment elevation myocardial infarctionChronic lung diseaseElevation myocardial infarctionWorse health statusPoor physical functioningQuality of lifeResidual anginaCoronary revascularizationHeart failureLung diseaseMI patientsPhysical functionMultivariable PoissonMultivariable modelPhysical functioningEarly recoveryGreater prevalenceInfarctionPatientsAdditional treatmentWomen
2005
Knowledge of Cholesterol Levels and Targets in Patients With Coronary Artery Disease
Cheng S, Lichtman JH, Amatruda JM, Smith GL, Mattera JA, Roumanis SA, Krumholz HM. Knowledge of Cholesterol Levels and Targets in Patients With Coronary Artery Disease. Preventive Cardiology 2005, 8: 11-17. PMID: 15722689, DOI: 10.1111/j.1520-037x.2005.3939.x.Peer-Reviewed Original ResearchConceptsCoronary artery diseaseHigh-density lipoproteinLow-density lipoproteinCholesterol targetsArtery diseaseCholesterol levelsMultiple cardiac risk factorsCardiac risk factorsTotal cholesterol levelsTotal cholesterol valuesRisk factorsCardiovascular diseaseCholesterol valuesPrevious historyPatientsLipoproteinDiseaseCollege educationWomenNonwhitesEducation effortsNational targetsTargetCholesterol
2004
Participation in Cancer Clinical Trials: Race-, Sex-, and Age-Based Disparities
Murthy VH, Krumholz HM, Gross CP. Participation in Cancer Clinical Trials: Race-, Sex-, and Age-Based Disparities. JAMA 2004, 291: 2720-2726. PMID: 15187053, DOI: 10.1001/jama.291.22.2720.Peer-Reviewed Original ResearchConceptsCancer trialsCancer clinical trialsClinical trialsTrial participantsEnrollment fractionWhite patientsAge groupsCross-sectional population-based analysisProstate cancer clinical trialsCancer research participationCancer trial participantsColorectal cancer trialsPatients 75 yearsIncident cancer patientsLung cancer trialsPopulation-based analysisRelative risk ratiosAge-based disparitiesYears of ageNational Cancer InstituteLogistic regression modelsLittle recent informationTrial enrolleesYounger patientsPatient groupHospital Coronary Artery Bypass Graft Surgery Volume and Patient Mortality, 1998–2000
Rathore SS, Epstein AJ, Volpp KG, Krumholz HM. Hospital Coronary Artery Bypass Graft Surgery Volume and Patient Mortality, 1998–2000. Annals Of Surgery 2004, 239: 110-117. PMID: 14685108, PMCID: PMC1356200, DOI: 10.1097/01.sla.0000103066.22732.b8.Peer-Reviewed Original ResearchMeSH KeywordsAge DistributionAgedAnalysis of VarianceCause of DeathCoronary Artery BypassCoronary DiseaseFemaleHospital MortalityHumansIncidenceMaleMiddle AgedOdds RatioOutcome Assessment, Health CareProbabilityRegistriesRetrospective StudiesRisk AssessmentSampling StudiesSex DistributionTotal Quality ManagementUnited StatesConceptsLow-volume hospitalsMedium-volume hospitalsHigh-volume hospitalsSurgery volumeMortality riskMortality rateNational Inpatient Sample databaseRisk-standardized mortality ratesHospital CABG volumeHospital mortality rateRisk of mortalityLower mortality riskHealth care purchasersHospital mortalityMultivariable adjustmentVolume hospitalsBorderline significanceCABG volumeRetrospective analysisVolume groupMortality differencesPatientsHospitalLeapfrog GroupReliable marker
2003
Sex Differences in Health Status After Coronary Artery Bypass Surgery
Vaccarino V, Lin ZQ, Kasl SV, Mattera JA, Roumanis SA, Abramson JL, Krumholz HM. Sex Differences in Health Status After Coronary Artery Bypass Surgery. Circulation 2003, 108: 2642-2647. PMID: 14597590, DOI: 10.1161/01.cir.0000097117.28614.d8.Peer-Reviewed Original ResearchConceptsPhysical functionMental healthReadmission ratesFunctional gainsCoronary artery bypass graft surgeryArtery bypass graft surgeryCoronary artery bypass surgeryLower functional gainsBypass graft surgeryArtery bypass surgeryHigher readmission ratesMan 6 monthsMean score improvementFirst CABGCABG surgeryGraft surgeryBaseline characteristicsBypass surgeryHospital readmissionMultivariable analysisAdverse outcomesFunctional statusFunctional improvementHealth SurveyHealth status