2017
Risk Trajectories of Readmission and Death in the First Year after Hospitalization for Chronic Obstructive Pulmonary Disease
Lindenauer PK, Dharmarajan K, Qin L, Lin Z, Gershon AS, Krumholz HM. Risk Trajectories of Readmission and Death in the First Year after Hospitalization for Chronic Obstructive Pulmonary Disease. American Journal Of Respiratory And Critical Care Medicine 2017, 197: 1009-1017. PMID: 29206052, PMCID: PMC5909167, DOI: 10.1164/rccm.201709-1852oc.Peer-Reviewed Original ResearchConceptsChronic obstructive pulmonary diseaseSame respective groupsObstructive pulmonary diseaseVentilator supportPulmonary diseaseRisk of readmissionRisk of hospitalizationGeneral elderly populationGeneral Medicare populationRisk of deathDaily riskRespective groupsReadmission ratesHospital readmissionAbsolute riskMedicare populationReadmissionElderly populationMedicare beneficiariesHospitalizationClinical servicesFirst monthProlonged riskDeathLongitudinal outcomes
2016
Trajectories of Risk for Specific Readmission Diagnoses after Hospitalization for Heart Failure, Acute Myocardial Infarction, or Pneumonia
Krumholz HM, Hsieh A, Dreyer RP, Welsh J, Desai NR, Dharmarajan K. Trajectories of Risk for Specific Readmission Diagnoses after Hospitalization for Heart Failure, Acute Myocardial Infarction, or Pneumonia. PLOS ONE 2016, 11: e0160492. PMID: 27716841, PMCID: PMC5055318, DOI: 10.1371/journal.pone.0160492.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionRisk of readmissionHeart failureReadmission diagnosesHospital dischargeReadmission riskTiming of riskMyocardial infarctionImmediate post-discharge periodDiagnostic categoriesPhysiologic systemsRisk of rehospitalizationGeneral elderly populationRisk of deathPost-discharge periodPost-discharge interventionsTrauma/injuryHospitalization riskHospitalizationTrajectories of riskElderly populationMedicare feePneumoniaRehospitalizationService beneficiaries
2015
Trajectories of risk after hospitalization for heart failure, acute myocardial infarction, or pneumonia: retrospective cohort study
Dharmarajan K, Hsieh AF, Kulkarni VT, Lin Z, Ross JS, Horwitz LI, Kim N, Suter LG, Lin H, Normand SL, Krumholz HM. Trajectories of risk after hospitalization for heart failure, acute myocardial infarction, or pneumonia: retrospective cohort study. The BMJ 2015, 350: h411. PMID: 25656852, PMCID: PMC4353309, DOI: 10.1136/bmj.h411.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionRetrospective cohort studyHeart failureRisk of deathMyocardial infarctionFirst readmissionAbsolute riskOlder patientsCohort studyRelative riskMedicare feeService beneficiariesRisk of readmissionGeneral elderly populationGeneral older populationRisk trajectoriesHigh-risk periodHospital dischargeHospital admissionDischarge diagnosisAdverse outcomesReadmissionHospitalizationTrajectories of riskElderly population
2013
Income inequality and 30 day outcomes after acute myocardial infarction, heart failure, and pneumonia: retrospective cohort study
Lindenauer PK, Lagu T, Rothberg MB, Avrunin J, Pekow PS, Wang Y, Krumholz HM. Income inequality and 30 day outcomes after acute myocardial infarction, heart failure, and pneumonia: retrospective cohort study. The BMJ 2013, 346: f521. PMID: 23412830, PMCID: PMC3573180, DOI: 10.1136/bmj.f521.Peer-Reviewed Original ResearchConceptsIncome inequalityAcute myocardial infarctionUS statesRetrospective cohort studyDay of admissionHeart failureMyocardial infarctionCohort studyInequality levelsIndividual incomeGini coefficientUS acute care hospitalsHighest quarterDays of dischargeDays of hospitalizationRisk of readmissionRisk of deathPatient socioeconomic characteristicsRisk of mortalityAcute care hospitalsSocioeconomic characteristicsInequalityLogistic regression modelsCare hospitalReadmission analysis
2012
Skilled Nursing Facility Referral and Hospital Readmission Rates after Heart Failure or Myocardial Infarction
Chen J, Ross JS, Carlson MD, Lin Z, Normand SL, Bernheim SM, Drye EE, Ling SM, Han LF, Rapp MT, Krumholz HM. Skilled Nursing Facility Referral and Hospital Readmission Rates after Heart Failure or Myocardial Infarction. The American Journal Of Medicine 2012, 125: 100.e1-100.e9. PMID: 22195535, PMCID: PMC3246370, DOI: 10.1016/j.amjmed.2011.06.011.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionRisk-standardized readmission ratesSkilled nursing facilitiesHeart failureHospital-level variationReadmission ratesMyocardial infarctionRate of dischargeHospital-level readmission ratesSubstantial hospital-level variationService Medicare patientsCause readmission rateRisk of readmissionHospital readmission ratesHF admissionsRegression modelsAMI patientsFacility referralPrincipal diagnosisMedicare patientsMedicare claimsClaims dataAMI admissionsAMI hospitalizationNursing facilities
2003
Outcomes in heart failure patients with preserved ejection fraction Mortality, readmission, and functional decline
Smith GL, Masoudi FA, Vaccarino V, Radford MJ, Krumholz HM. Outcomes in heart failure patients with preserved ejection fraction Mortality, readmission, and functional decline. Journal Of The American College Of Cardiology 2003, 41: 1510-1518. PMID: 12742291, DOI: 10.1016/s0735-1097(03)00185-2.Peer-Reviewed Original ResearchConceptsDepressed ejection fractionRisk of readmissionEjection fractionHeart failureFunctional declineHeart failure patientsHF patientsFailure patientsHospital dischargeHospital readmissionIndependent predictorsClinical outcomesPoor prognosisFunctional statusClinical covariatesClinical trajectoriesReadmissionLower riskPatientsConsiderable burdenCombined outcomeNatural historyMortalityDeathOutcomes
2000
Predictors of readmission among elderly survivors of admission with heart failure
Krumholz H, Chen Y, Wang Y, Vaccarino V, Radford M, Horwitz R. Predictors of readmission among elderly survivors of admission with heart failure. American Heart Journal 2000, 139: 72-77. PMID: 10618565, DOI: 10.1016/s0002-8703(00)90311-9.Peer-Reviewed Original ResearchConceptsHigh-risk patientsHeart failureRisk predictorsCause readmissionClinical factorsValidation cohortHeart failure-related readmissionsPrior heart failurePatients 65 yearsPredictors of readmissionRisk of readmissionMedical record reviewGroup of patientsPrincipal discharge diagnosisResource-intensive interventionsMedicare administrative databasesCreatinine levelsElderly patientsPrior admissionReadmission ratesDerivation cohortRecord reviewDischarge diagnosisAdministrative databasesConnecticut hospitals
1999
Beta-blocker therapy for secondary prevention of myocardial infarction in elderly diabetic patients
Chen J, Marciniak T, Radford M, Wang Y, Krumholz H. Beta-blocker therapy for secondary prevention of myocardial infarction in elderly diabetic patients. Journal Of The American College Of Cardiology 1999, 34: 1388-1394. PMID: 10551683, DOI: 10.1016/s0735-1097(99)00383-6.Peer-Reviewed Original ResearchConceptsBeta-blocker therapyElderly diabetic patientsAcute myocardial infarctionInsulin-treated diabeticsOne-year mortalityDiabetic patientsDiabetic complicationsMyocardial infarctionNational Cooperative Cardiovascular ProjectSix-month readmission ratesOne-year mortality rateRetrospective cohort studyRisk of readmissionHospital medical recordsCooperative Cardiovascular ProjectCommunity practice settingsElderly diabeticsCohort studyComplication rateReadmission ratesSecondary preventionClinical factorsHospital readmissionRandomized trialsPotential confounders