2018
Quantifying the utilization of medical devices necessary to detect postmarket safety differences: A case study of implantable cardioverter defibrillators
Bates J, Parzynski CS, Dhruva SS, Coppi A, Kuntz R, Li S, Marinac‐Dabic D, Masoudi FA, Shaw RE, Warner F, Krumholz HM, Ross JS. Quantifying the utilization of medical devices necessary to detect postmarket safety differences: A case study of implantable cardioverter defibrillators. Pharmacoepidemiology And Drug Safety 2018, 27: 848-856. PMID: 29896873, PMCID: PMC6436550, DOI: 10.1002/pds.4565.Peer-Reviewed Original ResearchConceptsAdverse event ratesSafety differencesEvent ratesMedical device utilizationICD utilizationRate ratioNational Cardiovascular Data RegistryICD modelsImplantable cardioverter defibrillatorEvent rate ratioMost patientsCardioverter defibrillatorProportion of individualsAmerican CollegeData registryRoutine surveillanceSample size estimatesAverage event rateDevice utilizationSignificance levelDifferencesPatientsRegistryDefibrillatorICD
2015
Insurance and Prehospital Delay in Patients ≤55 Years With Acute Myocardial Infarction
Chen SI, Wang Y, Dreyer R, Strait KM, Spatz ES, Xu X, Smolderen KG, Desai NR, Lorenze NP, Lichtman JH, Spertus JA, D'Onofrio G, Bueno H, Masoudi FA, Krumholz HM. Insurance and Prehospital Delay in Patients ≤55 Years With Acute Myocardial Infarction. The American Journal Of Cardiology 2015, 116: 1827-1832. PMID: 26541907, PMCID: PMC5323057, DOI: 10.1016/j.amjcard.2015.09.018.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionPrehospital delayInsurance statusMyocardial infarctionSpanish patientsGender differencesHealth care systemUS patientsProspective studyUS cohortUS womenPatientsUniversal insuranceCare systemWomenSignificant gender differencesInfarctionMenInsurance groupsHoursStatusAssociationLarge proportionDifferencesCohort
2005
Racial differences in reperfusion therapy use in patients hospitalized with myocardial infarction: A regional phenomenon
Rathore SS, Frederick PD, Every NR, Barron HV, Krumholz HM. Racial differences in reperfusion therapy use in patients hospitalized with myocardial infarction: A regional phenomenon. American Heart Journal 2005, 149: 1074-1081. PMID: 15976791, PMCID: PMC2790272, DOI: 10.1016/j.ahj.2004.08.018.Peer-Reviewed Original ResearchConceptsTherapy useMyocardial infarctionBlack patientsReperfusion therapyWhite patientsRacial differencesLower crude ratesMyocardial Infarction 2Reperfusion therapy ratesCohort of patientsTherapy ratesMultivariable adjustmentClinical contraindicationsNational registryPractice patternsCrude ratePatientsInfarctionGeographic regionsTherapyLower ratesTreatmentNational patternsContraindicationsDifferences
2004
Differences, disparities, and biases: clarifying racial variations in health care use.
Rathore SS, Krumholz HM. Differences, disparities, and biases: clarifying racial variations in health care use. Annals Of Internal Medicine 2004, 141: 635-8. PMID: 15492343, DOI: 10.7326/0003-4819-141-8-200410190-00011.Peer-Reviewed Original ResearchConceptsHealth care useCare useRacial variationRacial differencesHealth care system factorsAdverse consequencesClinical factorsClinical contraindicationsTreatment eligibilityPatient preferencesObservational studyEvidence of differencesMedical literatureRacial disparitiesHealth careInitial reportSystem factorsDifferent causesTreatmentReports of variationReportDisparitiesContraindicationsDifferencesCare
2001
Racial Differences in the Use of Cardiac Catheterization after Acute Myocardial Infarction
Chen J, Rathore S, Radford M, Wang Y, Krumholz H. Racial Differences in the Use of Cardiac Catheterization after Acute Myocardial Infarction. New England Journal Of Medicine 2001, 344: 1443-1449. PMID: 11346810, DOI: 10.1056/nejm200105103441906.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionCardiac catheterizationBlack patientsWhite patientsMyocardial infarctionCooperative Cardiovascular ProjectPatterns of careAdjusted mortality rateRacial differencesBlack physiciansStudy cohortCatheterizationInfarctionMedicare beneficiariesMortality ratePatientsPhysiciansWhite physiciansLower ratesSignificant interactionCohortRaceDifferencesCare
1997
Differences in physician compensation for cardiovascular services by age, sex, and race.
Krumholz HM, Fendrick AM, Williams C, Hynes WM. Differences in physician compensation for cardiovascular services by age, sex, and race. The American Journal Of Managed Care 1997, 3: 557-63. PMID: 10169524.Peer-Reviewed Original ResearchConceptsConsecutive patientsCoronary angioplastyCardiovascular servicesPercutaneous transluminal coronary angioplastyPatients 75 yearsTransluminal coronary angioplastyPercutaneous coronary angioplastyPatients 40Patients 65Patient characteristicsPatient groupInsurance statusCardiology practicePhysiciansStress testingAngioplastySignificant differencesPatientsLower ratesSimilar differencesPhysician compensationAgeSexYearsDifferences