2020
SalivaDirect: A simplified and flexible platform to enhance SARS-CoV-2 testing capacity
Vogels CBF, Watkins AE, Harden CA, Brackney DE, Shafer J, Wang J, Caraballo C, Kalinich CC, Ott IM, Fauver JR, Kudo E, Lu P, Venkataraman A, Tokuyama M, Moore AJ, Muenker MC, Casanovas-Massana A, Fournier J, Bermejo S, Campbell M, Datta R, Nelson A, Team Y, Anastasio K, Askenase M, Batsu M, Bickerton S, Brower K, Bucklin M, Cahill S, Cao Y, Courchaine E, DeIuliis G, Earnest R, Geng B, Goldman-Israelow B, Handoko R, Khoury-Hanold W, Kim D, Knaggs L, Kuang M, Lapidus S, Lim J, Linehan M, Lu-Culligan A, Martin A, Matos I, McDonald D, Minasyan M, Nakahata M, Naushad N, Nouws J, Obaid A, Odio C, Oh J, Omer S, Park A, Park H, Peng X, Petrone M, Prophet S, Rice T, Rose K, Sewanan L, Sharma L, Shaw A, Shepard D, Smolgovsky M, Sonnert N, Strong Y, Todeasa C, Valdez J, Velazquez S, Vijayakumar P, White E, Yang Y, Dela Cruz C, Ko A, Iwasaki A, Krumholz H, Matheus J, Hui P, Liu C, Farhadian S, Sikka R, Wyllie A, Grubaugh N. SalivaDirect: A simplified and flexible platform to enhance SARS-CoV-2 testing capacity. Med 2020, 2: 263-280.e6. PMID: 33521748, PMCID: PMC7836249, DOI: 10.1016/j.medj.2020.12.010.Peer-Reviewed Original ResearchConceptsEmergency use authorizationSARS-CoV-2 testingSARS-CoV-2 screeningSARS-CoV-2 testing capacitySupply chain shortagesHospital cohortNasopharyngeal swabsHealthy individualsDrug AdministrationHigh positive agreementQRT-PCR assaysDiagnostic testsU.S. FoodSafe reopeningTesting capacityGlobal healthPositive agreementFast GrantLower ratesSalivaNucleic acid extractionSwabsValid alternativeAssay costsCollection tubes
2019
Sex-Based Differences in Presentation, Treatment, and Complications Among Older Adults Hospitalized for Acute Myocardial Infarction
Nanna MG, Hajduk AM, Krumholz HM, Murphy TE, Dreyer RP, Alexander KP, Geda M, Tsang S, Welty FK, Safdar B, Lakshminarayan DK, Chaudhry SI, Dodson JA. Sex-Based Differences in Presentation, Treatment, and Complications Among Older Adults Hospitalized for Acute Myocardial Infarction. Circulation Cardiovascular Quality And Outcomes 2019, 12: e005691. PMID: 31607145, PMCID: PMC6913190, DOI: 10.1161/circoutcomes.119.005691.Peer-Reviewed Original ResearchMeSH KeywordsAge FactorsAgedAged, 80 and overComorbidityDisability EvaluationFemaleHealth Status DisparitiesHealthcare DisparitiesHumansLife StyleMaleMyocardial RevascularizationNon-ST Elevated Myocardial InfarctionPatient AdmissionPrevalenceProspective StudiesRisk AssessmentRisk FactorsSex FactorsSocial Determinants of HealthST Elevation Myocardial InfarctionTime FactorsTreatment OutcomeUnited StatesConceptsAcute myocardial infarctionSex-based differencesPercutaneous coronary interventionFunctional impairmentOlder adultsHospital complicationsCoronary interventionOlder patientsCoronary diseaseMyocardial infarctionAge-related functional impairmentsAge-associated functional impairmentsLower ratesPrior coronary diseaseObstructive coronary diseaseProspective observational studyNSTEMI subgroupSTEMI subgroupUnderwent revascularizationAcute myocardialChest painClinical presentationAMI subgroupRisk factorsHigh prevalenceDo pregnant women living in higher well-being populations in the USA experience lower risk of preterm delivery? A cross-sectional study
Riley C, Roy B, Herrin J, Spatz E, Silvestri MT, Arora A, Kell KP, Rula EY, Krumholz HM. Do pregnant women living in higher well-being populations in the USA experience lower risk of preterm delivery? A cross-sectional study. BMJ Open 2019, 9: e024143. PMID: 31048427, PMCID: PMC6501974, DOI: 10.1136/bmjopen-2018-024143.Peer-Reviewed Original ResearchConceptsPreterm birthCross-sectional studyIndividual risk factorsPreterm deliveryRisk factorsPregnant womenLower riskMaternal risk factorsPrimary outcome measurePrimary independent variableGestational ageMaternal riskOutcome measuresUS birthsHealth StatisticsBirth dataBeing IndexWomenBirthGallup-Sharecare WellLower ratesQuintileRiskDeliveryPopulation
2018
Comparison of Prevalence, Awareness, Treatment, and Control of Cardiovascular Risk Factors in China and the United States
Lu Y, Wang P, Zhou T, Lu J, Spatz ES, Nasir K, Jiang L, Krumholz HM. Comparison of Prevalence, Awareness, Treatment, and Control of Cardiovascular Risk Factors in China and the United States. Journal Of The American Heart Association 2018, 7: e007462. PMID: 29374046, PMCID: PMC5850247, DOI: 10.1161/jaha.117.007462.Peer-Reviewed Original ResearchMeSH KeywordsAgedAntihypertensive AgentsAttitude of Health PersonnelBlood GlucoseBlood PressureBody Mass IndexCardiovascular DiseasesChinaDiabetes MellitusDyslipidemiasFemaleHealth Knowledge, Attitudes, PracticeHealth Status DisparitiesHumansHypertensionHypolipidemic AgentsLipidsLongitudinal StudiesMaleMiddle AgedNutrition SurveysObesityPractice Patterns, Physicians'PrevalencePrognosisRisk AssessmentRisk FactorsTime FactorsUnited StatesWaist CircumferenceConceptsHigher stroke prevalenceCardiovascular risk factorsHigh-sensitivity C-reactive proteinBody mass indexC-reactive proteinRisk factorsBlood pressureWaist circumferenceMass indexStroke prevalenceCardiovascular risk factor profileHigher mean blood pressureControl of hypertensionMean blood pressureBlood pressure levelsRisk factor profileComparison of prevalenceRepresentative population sampleLower ratesDyslipidemia awarenessSevere hypertensionHemoglobin A1cHypertension treatmentControl ratePlasma glucose
2012
Appropriate And Inappropriate Imaging Rates For Prostate Cancer Go Hand In Hand By Region, As If Set By Thermostat
Makarov DV, Desai R, Yu JB, Sharma R, Abraham N, Albertsen PC, Krumholz HM, Penson DF, Gross CP. Appropriate And Inappropriate Imaging Rates For Prostate Cancer Go Hand In Hand By Region, As If Set By Thermostat. Health Affairs 2012, 31: 730-740. PMID: 22492890, DOI: 10.1377/hlthaff.2011.0336.Peer-Reviewed Original ResearchConceptsInappropriate imagingAppropriate imagingProstate cancerHigh-risk prostate cancerHigh rateHigh-risk patientsHealth care utilizationProstate cancer patientsCross-sectional studyOverall imaging rateHealth care costsLower ratesCare utilizationCancer patientsAppropriate treatmentAdvanced imagingCare costsPatientsHealth care organizationsCare organizationsCancerCost containmentImagingImaging rateRegional variation
2011
National and Regional Trends in Heart Failure Hospitalization and Mortality Rates for Medicare Beneficiaries, 1998-2008
Chen J, Normand SL, Wang Y, Krumholz HM. National and Regional Trends in Heart Failure Hospitalization and Mortality Rates for Medicare Beneficiaries, 1998-2008. JAMA 2011, 306: 1669-1678. PMID: 22009099, PMCID: PMC3688069, DOI: 10.1001/jama.2011.1474.Peer-Reviewed Original ResearchConceptsHF hospitalization ratesHeart failure hospitalizationHospitalization ratesMortality rateFailure hospitalizationHeart failure hospitalization ratesPrincipal discharge diagnosis codeOne-year mortality rateDischarge diagnosis codesIschemic heart diseaseAcute care hospitalsService Medicare beneficiariesLower ratesBlack menHF hospitalizationPatient demographicsCare hospitalDiagnosis codesHeart diseaseRisk factorsMedicare beneficiariesHospitalizationStudy periodMortalityNational meanDo Imaging Studies Performed in Physician Offices Increase Downstream Utilization? An Empiric Analysis of Cardiac Stress Testing With Imaging
Chen J, Fazel R, Ross JS, McNamara RL, Einstein AJ, Al-Mallah M, Krumholz HM, Nallamothu BK. Do Imaging Studies Performed in Physician Offices Increase Downstream Utilization? An Empiric Analysis of Cardiac Stress Testing With Imaging. JACC Cardiovascular Imaging 2011, 4: 630-637. PMID: 21679898, PMCID: PMC3319749, DOI: 10.1016/j.jcmg.2011.04.003.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAged, 80 and overCardiac CatheterizationChi-Square DistributionEchocardiography, StressEmpirical ResearchFemaleHealthcare DisparitiesHumansInsurance, HealthLogistic ModelsMaleMiddle AgedMyocardial Perfusion ImagingMyocardial RevascularizationOffice VisitsOutpatient Clinics, HospitalPractice Patterns, Physicians'Predictive Value of TestsResidence CharacteristicsTime FactorsUnited StatesYoung AdultConceptsMyocardial perfusion imagingSubsequent myocardial perfusion imagingProportion of patientsStress echocardiographyCardiac catheterizationHospital outpatient settingPhysician's officeOutpatient settingStress testingSubsequent cardiac testingCardiac stress testingDownstream resource utilizationHospital outpatient facilitiesCardiac testingPrivate health insuranceDownstream testingOffice imagingPerfusion imagingCatheterizationImaging studiesOutpatient imagingPatientsHealth insuranceLower ratesHigh rate
2009
Racial Differences in Survival After In-Hospital Cardiac Arrest
Chan PS, Nichol G, Krumholz HM, Spertus JA, Jones PG, Peterson ED, Rathore SS, Nallamothu BK, Investigators F. Racial Differences in Survival After In-Hospital Cardiac Arrest. JAMA 2009, 302: 1195-1201. PMID: 19755698, PMCID: PMC2795316, DOI: 10.1001/jama.2009.1340.Peer-Reviewed Original ResearchConceptsHospital cardiac arrestCardiac arrestBlack patientsWhite patientsSuccessful resuscitationPostresuscitation survivalRacial differencesHospital sitesIn-Hospital Cardiac ArrestLower ratesPulseless ventricular tachycardiaRate of survivalCohort studyHospital dischargePatient characteristicsClinical factorsImmediate resuscitationPostresuscitation periodNational registryVentricular tachycardiaHospital CenterVentricular fibrillationCardiopulmonary resuscitationAdditional adjustmentPatients
2008
Delayed Time to Defibrillation after In-Hospital Cardiac Arrest
S. C, M. K, Graham N, K. N, Investigators T. Delayed Time to Defibrillation after In-Hospital Cardiac Arrest. New England Journal Of Medicine 2008, 358: 9-17. PMID: 18172170, DOI: 10.1056/nejmoa0706467.Peer-Reviewed Original ResearchMeSH KeywordsAgedComorbidityElectric CountershockFemaleHeart ArrestHeart FailureHospital Bed CapacityHospital MortalityHospitalizationHumansLogistic ModelsMaleMiddle AgedMultivariate AnalysisMyocardial InfarctionRetrospective StudiesSurvival AnalysisTachycardia, VentricularTime FactorsVentricular FibrillationConceptsHospital cardiac arrestCardiac arrestHospital dischargeIn-Hospital Cardiac ArrestOverall median timePulseless ventricular tachycardiaMultivariable logistic regressionLower ratesMedian timeVentricular arrhythmiasBlack raceHospital characteristicsNational registryVentricular tachycardiaCardiopulmonary resuscitationExpert guidelinesVentricular fibrillationHospital unitsLogistic regressionPatientsDefibrillationSurvivalArrestHospitalMinutes of delay
2007
Certificate of Need Regulation and Cardiac Catheterization Appropriateness After Acute Myocardial Infarction
Ross JS, Ho V, Wang Y, Cha SS, Epstein AJ, Masoudi FA, Nallamothu BK, Krumholz HM. Certificate of Need Regulation and Cardiac Catheterization Appropriateness After Acute Myocardial Infarction. Circulation 2007, 115: 1012-1019. PMID: 17283258, DOI: 10.1161/circulationaha.106.658377.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionMyocardial infarctionCardiac catheterizationHospital coronary artery bypass graft surgeryCoronary artery bypass graft surgeryArtery bypass graft surgeryLower ratesUS acute care hospitalsCardiac catheterization capabilitiesChart-abstracted dataBypass graft surgeryDay of admissionAcute care hospitalsComplex medical careQuality of careGraft surgeryCatheterization ratesClinical characteristicsCON regulationsHospital characteristicsMedicare patientsRetrospective analysisCatheterizationHealthcare costsFull cohort
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
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