2010
Hospital Volume and 30-Day Mortality for Three Common Medical Conditions
Ross JS, Normand SL, Wang Y, Ko DT, Chen J, Drye EE, Keenan PS, Lichtman JH, Bueno H, Schreiner GC, Krumholz HM. Hospital Volume and 30-Day Mortality for Three Common Medical Conditions. New England Journal Of Medicine 2010, 362: 1110-1118. PMID: 20335587, PMCID: PMC2880468, DOI: 10.1056/nejmsa0907130.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionHospital volumeHeart failureMyocardial infarctionVolume thresholdRisk factorsAnnual hospital volumeHigh-volume hospitalsPatient risk factorsOdds of deathCommon medical conditionsAcute care hospitalsMedicare administrative claimsHierarchical logistic regression modelsCross-sectional analysisLogistic regression modelsCare hospitalHospital characteristicsReduced oddsMedical conditionsAdministrative claimsInfarctionPatientsPneumoniaService beneficiaries
2006
Regionalization of ST-Segment Elevation Acute Coronary Syndromes Care Putting a National Policy in Proper Perspective
Rathore SS, Epstein AJ, Nallamothu BK, Krumholz HM. Regionalization of ST-Segment Elevation Acute Coronary Syndromes Care Putting a National Policy in Proper Perspective. Journal Of The American College Of Cardiology 2006, 47: 1346-1349. PMID: 16580519, PMCID: PMC2789345, DOI: 10.1016/j.jacc.2005.11.053.Peer-Reviewed Original ResearchConceptsPrimary percutaneous coronary interventionPrimary PCISTEMI patientsFibrinolytic therapyPCI hospitalsST-segment elevation myocardial infarction (STEMI) careAcute coronary syndrome careHigh-volume PCI hospitalsHigh-risk STEMI patientsElevation Myocardial Infarction CareHigh-volume hospitalsLow-volume hospitalsPercutaneous coronary interventionMyocardial infarction careCardiac care facilitiesHealth care resourcesHealth care systemInitial hospitalPCI patientsCoronary interventionU.S. health care systemAverage patientSingle deathCare facilitiesPatients
2005
Volume-based referral for cardiovascular procedures in the United States: a cross-sectional regression analysis
Epstein AJ, Rathore SS, Krumholz HM, Volpp K. Volume-based referral for cardiovascular procedures in the United States: a cross-sectional regression analysis. BMC Health Services Research 2005, 5: 42. PMID: 15935099, PMCID: PMC1175086, DOI: 10.1186/1472-6963-5-42.Peer-Reviewed Original ResearchConceptsPercutaneous coronary interventionHigh-volume hospitalsVolume hospitalsLow-volume hospitalsNumber of patientsHospital mortalityCoronary artery bypass graft surgeryLeapfrog GroupArtery bypass graft surgeryNational hospital discharge databaseProcedure-associated mortalityVolume-based referralBypass graft surgeryHospital discharge databaseNumber of deathsCABG patientsHospital CABGGraft surgeryPCI patientsCoronary interventionDischarge databaseRetrospective analysisCABGCardiovascular proceduresPatients
2004
Hospital percutaneous coronary intervention volume and patient mortality, 1998 to 2000 Does the evidence support current procedure volume minimums?
Epstein AJ, Rathore SS, Volpp KG, Krumholz HM. Hospital percutaneous coronary intervention volume and patient mortality, 1998 to 2000 Does the evidence support current procedure volume minimums? Journal Of The American College Of Cardiology 2004, 43: 1755-1762. PMID: 15145095, PMCID: PMC2803067, DOI: 10.1016/j.jacc.2003.09.070.Peer-Reviewed Original ResearchConceptsHigh-volume hospitalsMedium-volume hospitalsLow-volume hospitalsHospital mortalityHigh PCI volume hospitalsPercutaneous coronary intervention volumeACC/AHA guidelinesProcedure-associated mortalityHospital mortality rateCurrent American CollegeHospital discharge databaseAnnual PCI volumesVolume hospitalsAHA guidelinesPatient characteristicsPCI volumePatient mortalityDischarge databaseIntervention volumeRetrospective analysisAmerican CollegeComparable riskMortality ratePatientsHospitalHospital 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