2019
Development and Testing of Improved Models to Predict Payment Using Centers for Medicare & Medicaid Services Claims Data
Krumholz HM, Warner F, Coppi A, Triche EW, Li SX, Mahajan S, Li Y, Bernheim SM, Grady J, Dorsey K, Desai NR, Lin Z, Normand ST. Development and Testing of Improved Models to Predict Payment Using Centers for Medicare & Medicaid Services Claims Data. JAMA Network Open 2019, 2: e198406. PMID: 31411709, PMCID: PMC6694388, DOI: 10.1001/jamanetworkopen.2019.8406.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionHeart failurePopulation-based programsPOA codesSingle diagnostic codeDiagnostic codesComparative effectiveness research studyPublic reportingIndex admission diagnosisDays of hospitalizationClinical Modification codesService claims dataAcute care hospitalsMultiple care settingsPatient-level modelsAdmission diagnosisTotal hospitalizationsCare hospitalPrevious diagnosisNinth RevisionMyocardial infarctionCandidate variablesCare settingsClaims dataMAIN OUTCOME
2017
Incorporating Stroke Severity Into Hospital Measures of 30-Day Mortality After Ischemic Stroke Hospitalization
Schwartz J, Wang Y, Qin L, Schwamm LH, Fonarow GC, Cormier N, Dorsey K, McNamara RL, Suter LG, Krumholz HM, Bernheim SM. Incorporating Stroke Severity Into Hospital Measures of 30-Day Mortality After Ischemic Stroke Hospitalization. Stroke 2017, 48: 3101-3107. PMID: 28954922, DOI: 10.1161/strokeaha.117.017960.Peer-Reviewed Original ResearchConceptsRisk-standardized mortality ratesElectronic health record dataHealth record dataStroke severityClaims dataMortality rateAmerican Heart Association/American Stroke AssociationHealth Stroke Scale scoreRisk variablesMedicaid ServicesRisk adjustmentMedian risk-standardized mortality rateGuidelines-Stroke registryLow-mortality hospitalsStroke Scale scoreAcute ischemic strokeAmerican Stroke AssociationOdds of mortalityMortality measuresRecord dataIschemic stroke hospitalizationsHigh-mortality hospitalsService claims dataRisk-adjustment variablesHospital admission
2016
Long-Term Risk for Device-Related Complications and Reoperations After Implantable Cardioverter-Defibrillator Implantation: An Observational Cohort Study.
Ranasinghe I, Parzynski CS, Freeman JV, Dreyer RP, Ross JS, Akar JG, Krumholz HM, Curtis JP. Long-Term Risk for Device-Related Complications and Reoperations After Implantable Cardioverter-Defibrillator Implantation: An Observational Cohort Study. Annals Of Internal Medicine 2016, 165: 20-29. PMID: 27135392, DOI: 10.7326/m15-2732.Peer-Reviewed Original ResearchICD-related complicationsNational Cardiovascular Data RegistryObservational cohort studyDevice-related complicationsICD implantationLong-term riskCohort studyMedicare feeNational Cardiovascular Data Registry ICD RegistryImplantable cardioverter defibrillator implantationImplantable cardioverter-defibrillator placementCardioverter-defibrillator implantationService claims dataCRT-D devicesSingle-chamber devicesCumulative incidenceNonfatal outcomesICD RegistryService patientsBlack raceFemale sexReoperationAmerican CollegeClaims dataComplicationsIncidence and Determinants of Traumatic Intracranial Bleeding Among Older Veterans Receiving Warfarin for Atrial Fibrillation
Dodson JA, Petrone A, Gagnon DR, Tinetti ME, Krumholz HM, Gaziano JM. Incidence and Determinants of Traumatic Intracranial Bleeding Among Older Veterans Receiving Warfarin for Atrial Fibrillation. JAMA Cardiology 2016, 1: 65. PMID: 27437657, PMCID: PMC5600874, DOI: 10.1001/jamacardio.2015.0345.Peer-Reviewed Original ResearchConceptsTraumatic intracranial bleedingIntracranial bleedingInternational normalized ratioIschemic strokeAtrial fibrillationIncidence rateAnticonvulsant useWarfarin therapyNormalized ratioRisk factorsOlder adultsVeterans AffairsCox proportional hazards regressionVA electronic medical recordsMean patient agePatients 75 yearsRetrospective cohort studyClinical Modification codesCoronary artery diseaseProportional hazards regressionService claims dataVA administrative dataSignificant predictorsHealth care professionalsElectronic medical records
2013
Diagnoses and Timing of 30-Day Readmissions After Hospitalization for Heart Failure, Acute Myocardial Infarction, or Pneumonia
Dharmarajan K, Hsieh AF, Lin Z, Bueno H, Ross JS, Horwitz LI, Barreto-Filho JA, Kim N, Bernheim SM, Suter LG, Drye EE, Krumholz HM. Diagnoses and Timing of 30-Day Readmissions After Hospitalization for Heart Failure, Acute Myocardial Infarction, or Pneumonia. JAMA 2013, 309: 355-363. PMID: 23340637, PMCID: PMC3688083, DOI: 10.1001/jama.2012.216476.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionCommon readmission diagnosesAcute MI hospitalizationReadmission diagnosesDays of hospitalizationPatient demographic characteristicsHeart failureMyocardial infarctionHF hospitalizationReadmission timingPneumonia hospitalizationsMedian timeMI hospitalizationMedicare feeIndex HF hospitalizationIndex pneumonia hospitalizationProportion of patientsDemographic characteristicsService claims dataMI cohortPneumonia cohortHF cohortCondition categoriesHospitalizationReadmission