2022
Trends in Use of Single- vs Dual-Chamber Implantable Cardioverter-Defibrillators Among Patients Without a Pacing Indication, 2010-2018
Borne RT, Varosy P, Lan Z, Masoudi FA, Curtis JP, Matlock DD, Peterson PN. Trends in Use of Single- vs Dual-Chamber Implantable Cardioverter-Defibrillators Among Patients Without a Pacing Indication, 2010-2018. JAMA Network Open 2022, 5: e223429. PMID: 35315917, PMCID: PMC8941353, DOI: 10.1001/jamanetworkopen.2022.3429.Peer-Reviewed Original ResearchMeSH KeywordsAtrial FibrillationCardiac Resynchronization TherapyCross-Sectional StudiesDefibrillators, ImplantableHumansMaleMiddle AgedRegistriesConceptsDual-chamber ICDFirst-time ICD implantationPacing indicationICD implantationMedian odds ratioPatient characteristicsOdds ratioAtrial leadNational Cardiovascular Data Registry ICD RegistryCardiac resynchronization therapy indicationDual-chamber ICD implantationMulticenter cross-sectional studyBradycardia pacing indicationSingle-chamber ICDHospital-level variationHigh procedural riskCross-sectional studyLow-value practicesImplantable cardioverter defibrillatorLow-value careCochran-Armitage trend testImplantable cardioverter-defibrillator systemsDual-chamber devicesCardioverter-defibrillator systemsReal-world practiceHospital Characteristics and Early Enrollment Trends in the American College of Cardiology Voluntary Public Reporting Program
Castro-Dominguez YS, Curtis JP, Masoudi FA, Wang Y, Messenger JC, Desai NR, Slattery LE, Dehmer GJ, Minges KE. Hospital Characteristics and Early Enrollment Trends in the American College of Cardiology Voluntary Public Reporting Program. JAMA Network Open 2022, 5: e2147903. PMID: 35142829, PMCID: PMC8832180, DOI: 10.1001/jamanetworkopen.2021.47903.Peer-Reviewed Original ResearchConceptsPublic reporting programsHospital characteristicsCharacteristics of hospitalsEligible hospitalsAmerican CollegeNational Cardiovascular Data Registry CathPCIReporting ProgramHospital rankingsHospital 1 monthCross-sectional studyQuality of careStepwise logistic regressionOdds of participationCoronary interventionDischarge medicationsHospital factorsICD RegistryLarge hospital systemNonparticipating hospitalsProcedural volumeMAIN OUTCOMEHospitalLogistic regressionProcedure dataHospital system
2021
Comparison of Patients Undergoing Percutaneous Coronary Intervention in Contemporary U.S. Practice With ISCHEMIA Trial Population
Chatterjee S, Fanaroff AC, Parzynski C, Curtis J, Kolansky DM, Maddox TM, Mukherjee D, Yeh RW, Giri J. Comparison of Patients Undergoing Percutaneous Coronary Intervention in Contemporary U.S. Practice With ISCHEMIA Trial Population. JACC Cardiovascular Interventions 2021, 14: 2344-2349. PMID: 34736733, DOI: 10.1016/j.jcin.2021.08.047.Peer-Reviewed Original ResearchMeSH KeywordsCross-Sectional StudiesHumansIschemiaMyocardial IschemiaPercutaneous Coronary InterventionTreatment OutcomeConceptsStable ischemic heart diseasePercutaneous coronary interventionISCHEMIA trialSIHD patientsCoronary interventionNational Cardiovascular Data Registry CathPCI RegistryStudy periodHospital mortality rateHigh-risk featuresProportion of patientsTrial inclusion criteriaComparison of patientsIschemic heart diseaseCross-sectional analysisIschemic burdenMedian hospitalAngina symptomsCathPCI RegistryTrial populationComparator groupEnrollment criteriaMyocardial infarctionHeart diseaseU.S. patientsInclusion criteriaUse of Mechanical Circulatory Support Devices Among Patients With Acute Myocardial Infarction Complicated by Cardiogenic Shock
Dhruva SS, Ross JS, Mortazavi BJ, Hurley NC, Krumholz HM, Curtis JP, Berkowitz AP, Masoudi FA, Messenger JC, Parzynski CS, Ngufor CG, Girotra S, Amin AP, Shah ND, Desai NR. Use of Mechanical Circulatory Support Devices Among Patients With Acute Myocardial Infarction Complicated by Cardiogenic Shock. JAMA Network Open 2021, 4: e2037748. PMID: 33616664, PMCID: PMC7900859, DOI: 10.1001/jamanetworkopen.2020.37748.Peer-Reviewed Original ResearchMeSH KeywordsAgedAssisted CirculationCross-Sectional StudiesExtracorporeal Membrane OxygenationFemaleHeart ArrestHeart-Assist DevicesHospitals, High-VolumeHospitals, Low-VolumeHospitals, TeachingHumansIntra-Aortic Balloon PumpingMaleMiddle AgedMyocardial InfarctionPercutaneous Coronary InterventionRisk FactorsShock, CardiogenicConceptsMicroaxial left ventricular assist deviceIntra-aortic balloon pumpLeft ventricular assist devicePercutaneous coronary interventionAcute myocardial infarctionMechanical circulatory support devicesCardiogenic shockHospital-level variationSignificant hospital-level variationCirculatory support devicesMCS devicesUse of IABPDevice useMedian proportionAcute Myocardial Infarction ComplicatedCardiology-National Cardiovascular Data RegistryChest Pain-MI RegistryLimited clinical trial evidenceNational Cardiovascular Data RegistryMyocardial Infarction ComplicatedFirst medical contactSupport devicesClinical trial evidenceExtracorporeal membrane oxygenationCoronary artery stenosis
2020
Association Between Industry Payments to Physicians and Device Selection in ICD Implantation
Annapureddy AR, Henien S, Wang Y, Minges KE, Ross JS, Spatz ES, Desai NR, Peterson PN, Masoudi FA, Curtis JP. Association Between Industry Payments to Physicians and Device Selection in ICD Implantation. JAMA 2020, 324: 1755-1764. PMID: 33141208, PMCID: PMC7610190, DOI: 10.1001/jama.2020.17436.Peer-Reviewed Original ResearchMeSH KeywordsAgedCardiac Resynchronization Therapy DevicesCross-Sectional StudiesDefibrillators, ImplantableFemaleHumansIncomeMaleManufacturing IndustryPhysiciansRegistriesConceptsCRT-D implantationCRT-D devicesCross-sectional studyNational Cardiovascular Data Registry ICD RegistryFirst-time ICDFirst-time implantationProportion of patientsEntire study cohortDevice selectionProportion of devicesICD implantationICD RegistryPrimary outcomeCardiac resynchronizationStudy cohortPatient groupMAIN OUTCOMEPatientsPhysiciansICDAbsolute differenceImplantationManufacturer CHigher total paymentsAssociationFacility Variation in Troponin Ordering Within the Veterans Health Administration
Chui PW, Esserman D, Bastian LA, Curtis JP, Gandhi PU, Rosman L, Desai N, Hauser RG. Facility Variation in Troponin Ordering Within the Veterans Health Administration. Medical Care 2020, 58: 1098-1104. PMID: 33003051, PMCID: PMC7666100, DOI: 10.1097/mlr.0000000000001424.Peer-Reviewed Original ResearchMeSH KeywordsAcute Coronary SyndromeAge FactorsAgedAged, 80 and overComorbidityCross-Sectional StudiesDiagnosis-Related GroupsEmergency Service, HospitalGuideline AdherenceHumansMiddle AgedPractice Guidelines as TopicPractice Patterns, Physicians'Sex FactorsSocioeconomic FactorsTroponinUnited StatesUnited States Department of Veterans AffairsConceptsDownstream resource utilizationVeterans Health AdministrationCase mixHealth AdministrationCurrent United States guidelinesDownstream health care utilizationVeterans Health Administration facilitiesFacility characteristicsAcute coronary syndromeEmergency department visitsPercutaneous coronary interventionHealth care utilizationAcute care facilitiesUnited States guidelinesHigh rateCross-sectional analysisCoronary syndromeCoronary interventionED visitsDepartment visitsCare utilizationHighest quartileCoronary angiogramInpatient admissionsLowest quartileContemporary Trends, Predictors and Outcomes of Perforation During Percutaneous Coronary Intervention (From the NCDR Cath PCI Registry)
Nairooz R, Parzynski CS, Curtis JP, Mohsen A, McNulty E, Uretsky BF, Hakeem A. Contemporary Trends, Predictors and Outcomes of Perforation During Percutaneous Coronary Intervention (From the NCDR Cath PCI Registry). The American Journal Of Cardiology 2020, 130: 37-45. PMID: 32665131, DOI: 10.1016/j.amjcard.2020.06.014.Peer-Reviewed Original ResearchConceptsPercutaneous coronary interventionCoronary artery perforationAdverse eventsCardiogenic shockStudy periodCoronary interventionChronic total occlusion (CTO) PCISaphenous vein graft percutaneous coronary interventionProportion of PCIsVein graft percutaneous coronary interventionNational Cardiovascular Data Registry CathPCI RegistryGraft percutaneous coronary interventionLargest real-world experienceCTO percutaneous coronary interventionComplex percutaneous coronary interventionMultivariable logistic regression modelNon-CP patientsOutcome of perforationTotal PCI volumeUse of atherectomyType C lesionsCoronary artery bypassHigh rateLife-threatening complicationsConcomitant significant increase
2019
Analysis of Temporal Trends and Variation in the Use of Defibrillation Testing in Contemporary Practice
Borne RT, Randolph T, Wang Y, Curtis JP, Peterson PN, Masoudi FA, Sandhu A, Zipse MM, Thomas K, Kutyifa V, Desai NR, Cha YM, Hsu JC, Russo AM. Analysis of Temporal Trends and Variation in the Use of Defibrillation Testing in Contemporary Practice. JAMA Network Open 2019, 2: e1913553. PMID: 31626314, PMCID: PMC6813586, DOI: 10.1001/jamanetworkopen.2019.13553.Peer-Reviewed Original ResearchConceptsNational Cardiovascular Data Registry ICD RegistryMedian odds ratioDefibrillation testingLow testing ratesTesting ratesHigher testing ratesICD RegistryFirst-time ICD implantationImplantable cardioverter defibrillator implantationMulticenter cross-sectional studyAdvanced heart failureCardioverter-defibrillator implantationIschemic heart diseaseCross-sectional studyICD implantationHeart failureICD placementVentricular arrhythmiasMean ageHeart diseaseVentricular tachycardiaOdds ratioHigher oddsMAIN OUTCOMEFirst calendar quarterAssociation of Statewide Certificate of Need Regulations With Percutaneous Coronary Intervention Appropriateness and Outcomes
Chui PW, Parzynski CS, Ross JS, Desai NR, Gurm HS, Spertus JA, Seto AH, Ho V, Curtis JP. Association of Statewide Certificate of Need Regulations With Percutaneous Coronary Intervention Appropriateness and Outcomes. Journal Of The American Heart Association 2019, 8: e010373. PMID: 30642222, PMCID: PMC6497347, DOI: 10.1161/jaha.118.010373.Peer-Reviewed Original ResearchConceptsAcute coronary syndromePercutaneous coronary interventionPCI proceduresCON statesAppropriate use criteriaNon-CON statesCoronary syndromePCI registryCoronary interventionCON regulationsIntervention appropriatenessChi-square analysisAmerican CollegeHealthcare costsNeed regulationsPCI appropriatenessUse criteriaAbsolute differenceHealthcare servicesNew healthcare servicesAssociationPCILower proportionOutcomesACS
2018
Industry Payments to Cardiologists
Annapureddy A, Murugiah K, Minges KE, Chui PW, Desai N, Curtis JP. Industry Payments to Cardiologists. Circulation Cardiovascular Quality And Outcomes 2018, 11: e005016. PMID: 30562077, DOI: 10.1161/circoutcomes.118.005016.Peer-Reviewed Original ResearchAssociation of the US Department of Justice Investigation of Implantable Cardioverter-Defibrillators and Devices Not Meeting the Medicare National Coverage Determination, 2007-2015
Desai NR, Bourdillon PM, Parzynski CS, Brindis RG, Spatz ES, Masters C, Minges KE, Peterson P, Masoudi FA, Oetgen WJ, Buxton A, Zipes DP, Curtis JP. Association of the US Department of Justice Investigation of Implantable Cardioverter-Defibrillators and Devices Not Meeting the Medicare National Coverage Determination, 2007-2015. JAMA 2018, 320: 63-71. PMID: 29971398, PMCID: PMC6583049, DOI: 10.1001/jama.2018.8151.Peer-Reviewed Original ResearchConceptsPrimary prevention ICDsNon-Medicare beneficiariesAbsolute decreaseNational Cardiovascular Data Registry ICD RegistrySerial cross-sectional analysisStudy periodImplantable cardioverter defibrillatorRelative decreaseCross-sectional analysisProportion of devicesInitial ICDICD RegistryPrimary preventionCardioverter defibrillatorMAIN OUTCOMEMedicare beneficiariesUS hospitalsHospital groupHospitalICDMore rapid decreasesModest decreaseDepartmentMedicareUS DepartmentComparison of Physician Visual Assessment With Quantitative Coronary Angiography in Assessment of Stenosis Severity in China
Zhang H, Mu L, Hu S, Nallamothu BK, Lansky AJ, Xu B, Bouras G, Cohen DJ, Spertus JA, Masoudi FA, Curtis JP, Gao R, Ge J, Yang Y, Li J, Li X, Zheng X, Li Y, Krumholz HM, Jiang L. Comparison of Physician Visual Assessment With Quantitative Coronary Angiography in Assessment of Stenosis Severity in China. JAMA Internal Medicine 2018, 178: 239-247. PMID: 29340571, PMCID: PMC5838612, DOI: 10.1001/jamainternmed.2017.7821.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overChinaCoronary AngiographyCoronary StenosisCoronary VesselsCross-Sectional StudiesFemaleFollow-Up StudiesHumansIncidenceMaleMiddle AgedPercutaneous Coronary InterventionPractice Patterns, Physicians'Predictive Value of TestsProspective StudiesRisk AssessmentSeverity of Illness IndexTime FactorsConceptsPhysician visual assessmentPercutaneous coronary interventionAcute myocardial infarctionQuantitative coronary angiographyStenosis severityCoronary angiographyMean agePCI studiesMean percent diameter stenosisIndependent core laboratoryPercent diameter stenosisCross-sectional studyNon-AMI patientsStandard clinical practiceFractional flow reserveSubset of participantsQCA assessmentCoronary revascularizationMore stenosisCoronary interventionCoronary lesionsChina PatientCoronary angiogramDiameter stenosisMyocardial infarction
2017
Carotid Endarterectomy and Carotid Artery Stenting in the US Medicare Population, 1999-2014
Lichtman JH, Jones MR, Leifheit EC, Sheffet AJ, Howard G, Lal BK, Howard VJ, Wang Y, Curtis J, Brott TG. Carotid Endarterectomy and Carotid Artery Stenting in the US Medicare Population, 1999-2014. JAMA 2017, 318: 1035-1046. PMID: 28975306, PMCID: PMC5818799, DOI: 10.1001/jama.2017.12882.Peer-Reviewed Original ResearchConceptsVascular risk factorsCarotid endarterectomyCarotid arteryHospital mortalityCause mortalityRevascularization ratesIschemic strokeMyocardial infarctionRisk factorsMedicare beneficiariesSerial cross-sectional analysisUnderwent carotid arteryNumber of patientsUS national trendsService Medicare beneficiariesCross-sectional analysisSymptomatic patientsSymptomatic statusUnique patientsCarotid stenosisEndarterectomyMedicare inpatientMAIN OUTCOMEMedicare feePatientsHospital Performance on Percutaneous Coronary Intervention Process and Outcomes Measures
Chui PW, Parzynski CS, Nallamothu BK, Masoudi FA, Krumholz HM, Curtis JP. Hospital Performance on Percutaneous Coronary Intervention Process and Outcomes Measures. Journal Of The American Heart Association 2017, 6: e004276. PMID: 28446493, PMCID: PMC5524055, DOI: 10.1161/jaha.116.004276.Peer-Reviewed Original ResearchMeSH KeywordsCardiac RehabilitationCoronary DiseaseCross-Sectional StudiesHealthcare DisparitiesHumansHydroxymethylglutaryl-CoA Reductase InhibitorsMedicarePatient DischargePatient ReadmissionPercutaneous Coronary InterventionPlatelet Aggregation InhibitorsProcess Assessment, Health CareQuality ImprovementQuality Indicators, Health CareReferral and ConsultationRegistriesRisk FactorsTime FactorsTime-to-TreatmentTreatment OutcomeUnited StatesConceptsProcess measuresReadmission ratesOutcome measuresNational Cardiovascular Data Registry CathPCI RegistryHospital performancePercutaneous coronary interventionSpecific process measuresRisk-standardized mortalityPCI patientsCathPCI RegistryCoronary interventionHospital variationOutcome ratesHospital qualityPhysician ConsortiumMortalitySmall percentageWeak correlationAssociationIntervention processPatients
2016
Impact of Glycoprotein IIb/IIIa Inhibitors Use on Outcomes After Lower Extremity Endovascular Interventions From Nationwide Inpatient Sample (2006–2011)
Arora S, Panaich SS, Patel N, Patel NJ, Lahewala S, Thakkar B, Savani C, Jhamnani S, Singh V, Patel N, Patel S, Sonani R, Patel A, Tripathi B, Deshmukh A, Chothani A, Patel J, Bhatt P, Mohamad T, Remetz MS, Curtis JP, Attaran RR, Mena CI, Schreiber T, Grines C, Cleman M, Forrest JK, Badheka AO. Impact of Glycoprotein IIb/IIIa Inhibitors Use on Outcomes After Lower Extremity Endovascular Interventions From Nationwide Inpatient Sample (2006–2011). Catheterization And Cardiovascular Interventions 2016, 88: 605-616. PMID: 26914274, DOI: 10.1002/ccd.26452.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAged, 80 and overAmputation, SurgicalCross-Sectional StudiesDatabases, FactualDrug CostsEndovascular ProceduresFemaleHospital CostsHospital MortalityHumansLimb SalvageLogistic ModelsLower ExtremityMaleMiddle AgedMultivariate AnalysisOdds RatioPeripheral Arterial DiseasePlatelet Aggregation InhibitorsPlatelet Glycoprotein GPIIb-IIIa ComplexPropensity ScoreRisk FactorsTime FactorsTreatment OutcomeUnited StatesYoung AdultConceptsGlycoprotein IIb/IIIa inhibitorsPeripheral endovascular interventionsHospital mortalityHospitalization costsEndovascular interventionGPI useAmputation rateUtilization Project Nationwide Inpatient Sample databaseTwo-level hierarchical multivariateIIb/IIIa inhibitorsNationwide Inpatient Sample databaseLower amputation ratesPaucity of dataHospital outcomesPostprocedural complicationsSecondary outcomesPropensity matchingStudy cohortHealthcare costsICD-9Multivariate analysisStudy outcomesSample databaseMortalityHierarchical multivariate
2015
Appropriate Use Criteria for Coronary Revascularization and Trends in Utilization, Patient Selection, and Appropriateness of Percutaneous Coronary Intervention
Desai NR, Bradley SM, Parzynski CS, Nallamothu BK, Chan PS, Spertus JA, Patel MR, Ader J, Soufer A, Krumholz HM, Curtis JP. Appropriate Use Criteria for Coronary Revascularization and Trends in Utilization, Patient Selection, and Appropriateness of Percutaneous Coronary Intervention. JAMA 2015, 314: 2045-2053. PMID: 26551163, PMCID: PMC5459470, DOI: 10.1001/jama.2015.13764.Peer-Reviewed Original ResearchMeSH KeywordsAgedAngina PectorisCross-Sectional StudiesFemaleHumansMaleMyocardial RevascularizationPatient SelectionPercutaneous Coronary InterventionSeverity of Illness IndexConceptsNonacute percutaneous coronary interventionPercutaneous coronary interventionAppropriate use criteriaInappropriate percutaneous coronary interventionHospital-level variationCoronary revascularizationPatient selectionUse criteriaCoronary interventionStudy periodAppropriateness of PCINational Cardiovascular Data Registry CathPCI RegistryProportion of PCIsMultivessel coronary artery diseaseHigh-risk findingsCoronary artery diseaseAnnual PCI volumesCross-sectional analysisAngina severityAntianginal medicationsAcute indicationsCathPCI RegistryArtery diseasePCI volumePCI proceduresEffect of Hospital Volume on Outcomes of Transcatheter Aortic Valve Implantation
Badheka AO, Patel NJ, Panaich SS, Patel SV, Jhamnani S, Singh V, Pant S, Patel N, Patel N, Arora S, Thakkar B, Manvar S, Dhoble A, Patel A, Savani C, Patel J, Chothani A, Savani GT, Deshmukh A, Grines CL, Curtis J, Mangi AA, Cleman M, Forrest JK. Effect of Hospital Volume on Outcomes of Transcatheter Aortic Valve Implantation. The American Journal Of Cardiology 2015, 116: 587-594. PMID: 26092276, DOI: 10.1016/j.amjcard.2015.05.019.Peer-Reviewed Original ResearchConceptsTranscatheter aortic valve implantationLength of stayShorter LOSNationwide Inpatient Sample databaseInhospital mortality rateAortic valve implantationLower hospitalization costsHospital volumeInhospital mortalityComplication rateValve implantationHospitalization costsMortality rateUtilization Project Nationwide Inpatient Sample databaseHigher annual hospital volumeOverall inhospital mortality rateMedian LOSClinical Modification procedure codesMultivariate logistic regression modelAnnual hospital volumeLowest volume quartileLow-volume hospitalsPostprocedural complication rateCost of hospitalizationCross-sectional study
2014
In-Hospital Complications Associated With Reoperations of Implantable Cardioverter Defibrillators
Steckman DA, Varosy PD, Parzynski CS, Masoudi FA, Curtis JP, Sauer WH, Nguyen DT. In-Hospital Complications Associated With Reoperations of Implantable Cardioverter Defibrillators. The American Journal Of Cardiology 2014, 114: 419-426. PMID: 24927972, DOI: 10.1016/j.amjcard.2014.05.010.Peer-Reviewed Original ResearchConceptsHospital complicationsComplication rateRepeat proceduresLead extractionICD proceduresMultivariable adjusted odds ratiosNational Cardiovascular Data RegistryInitial implantImplantable cardioverter-defibrillator (ICD) proceduresHierarchical multivariable logistic regressionHospital adverse eventsAdjusted odds ratioHigh complication rateMultivariable logistic regressionLarge national cohortImplantable cardioverter defibrillatorHospital deathAdverse eventsICD implantationPatient characteristicsNational cohortOdds ratioProcedural outcomesCardioverter defibrillatorHigh risk
2013
Safety of Pacemaker Implantation in Nonagenarians
Mandawat A, Curtis JP, Mandawat A, Njike VY, Lampert R. Safety of Pacemaker Implantation in Nonagenarians. Circulation 2013, 127: 1453-1465. PMID: 23513066, DOI: 10.1161/circulationaha.113.001434.Peer-Reviewed Original ResearchMeSH KeywordsAge DistributionAgedAged, 80 and overArrhythmias, CardiacComorbidityCross-Sectional StudiesFemaleHealth Care CostsHospital MortalityHumansLength of StayLinear ModelsLogistic ModelsMaleMultivariate AnalysisOutcome and Process Assessment, Health CarePacemaker, ArtificialPredictive Value of TestsUnited StatesConceptsLength of stayYears of ageSevere comorbiditiesPacemaker implantationUtilization Project Nationwide Inpatient SampleInitial pacemaker implantationCase-mix variationMantel-Haenszel testStepwise linear regression modelHospital mortalityUnadjusted mortalityComplication rateMultivariable analysisUnadjusted outcomesInpatient SampleHealthcare costsPatientsComorbiditiesHierarchical logistic modelsStayNonagenariansMortalityAgeOutcomesComplications
2012
Hospital strategies for reducing risk-standardized mortality rates in acute myocardial infarction.
Bradley EH, Curry LA, Spatz ES, Herrin J, Cherlin EJ, Curtis JP, Thompson JW, Ting HH, Wang Y, Krumholz HM. Hospital strategies for reducing risk-standardized mortality rates in acute myocardial infarction. Annals Of Internal Medicine 2012, 156: 618-26. PMID: 22547471, PMCID: PMC3386642, DOI: 10.7326/0003-4819-156-9-201205010-00003.Peer-Reviewed Original ResearchConceptsRisk-standardized mortality ratesAcute myocardial infarctionLower risk-standardized mortality ratesMyocardial infarctionNurse championsMortality rateHospital strategiesHospital risk-standardized mortality ratesHospital-level factorsIntensive care unitAcute care hospitalsCardiac catheterization laboratoryCross-sectional surveyUnited Health FoundationCare hospitalCare unitCross-sectional designAMI casesAMI volumeCatheterization laboratoryHospital cliniciansHospitalMultivariate analysisPatientsHealth Foundation