2021
Incorporating Present-on-Admission Indicators in Medicare Claims to Inform Hospital Quality Measure Risk Adjustment Models
Triche EW, Xin X, Stackland S, Purvis D, Harris A, Yu H, Grady JN, Li SX, Bernheim SM, Krumholz HM, Poyer J, Dorsey K. Incorporating Present-on-Admission Indicators in Medicare Claims to Inform Hospital Quality Measure Risk Adjustment Models. JAMA Network Open 2021, 4: e218512. PMID: 33978722, PMCID: PMC8116982, DOI: 10.1001/jamanetworkopen.2021.8512.Peer-Reviewed Original ResearchConceptsPOA indicatorRisk factorsOutcome measuresQuality outcome measuresRisk-adjustment modelsClaims dataAdmission indicatorsPatient risk factorsAcute myocardial infarctionPatient-level outcomesAdministrative claims dataQuality improvement studyClaims-based measuresComparative effectiveness studiesPatient claims dataInternational Statistical ClassificationMortality outcome measuresRelated Health ProblemsHospital quality measuresRisk model performanceHospital stayIndex admissionCare algorithmHeart failureMortality outcomes
2019
Comparative Effectiveness of New Approaches to Improve Mortality Risk Models From Medicare Claims Data
Krumholz HM, Coppi AC, Warner F, Triche EW, Li SX, Mahajan S, Li Y, Bernheim SM, Grady J, Dorsey K, Lin Z, Normand ST. Comparative Effectiveness of New Approaches to Improve Mortality Risk Models From Medicare Claims Data. JAMA Network Open 2019, 2: e197314. PMID: 31314120, PMCID: PMC6647547, DOI: 10.1001/jamanetworkopen.2019.7314.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionICD-9-CM codesMortality risk modelHeart failureHospital admissionC-statisticMAIN OUTCOMEMortality rateRisk-standardized mortality ratesHospital risk-standardized mortality ratesIndex admission diagnosisPatients 65 yearsDays of hospitalizationComparative effectiveness studiesClaims-based dataHospital-level performance measuresMedicare claims dataPatient-level modelsCMS modelRisk-adjustment modelsRisk modelHospital performance measuresAdmission diagnosisNinth RevisionMyocardial infarctionComparison of Machine Learning Methods With National Cardiovascular Data Registry Models for Prediction of Risk of Bleeding After Percutaneous Coronary Intervention
Mortazavi BJ, Bucholz EM, Desai NR, Huang C, Curtis JP, Masoudi FA, Shaw RE, Negahban SN, Krumholz HM. Comparison of Machine Learning Methods With National Cardiovascular Data Registry Models for Prediction of Risk of Bleeding After Percutaneous Coronary Intervention. JAMA Network Open 2019, 2: e196835. PMID: 31290991, PMCID: PMC6624806, DOI: 10.1001/jamanetworkopen.2019.6835.Peer-Reviewed Original ResearchConceptsPercutaneous coronary interventionMajor bleedingC-statisticCoronary interventionMAIN OUTCOMEIndex percutaneous coronary interventionSubsequent coronary artery bypassPercutaneous coronary intervention (PCI) proceduresHospital major bleedingMajor bleeding ratesNationwide clinical registryCoronary artery bypassCoronary intervention proceduresComparative effectiveness studiesRisk score modelComplexity of presentationMean c-statisticCoronary angiography dataRegistry modelNCDR modelsArtery bypassBleeding eventsPrediction of riskClinical variablesBleeding rate
2018
Rationale, Design and Methodology of the Computerized Registry of Patients with Venous Thromboembolism (RIETE)
Bikdeli B, Jimenez D, Hawkins M, Ortíz S, Prandoni P, Brenner B, Decousus H, Masoudi FA, Trujillo-Santos J, Krumholz HM, Monreal M. Rationale, Design and Methodology of the Computerized Registry of Patients with Venous Thromboembolism (RIETE). Thrombosis And Haemostasis 2018, 118: 214-224. PMID: 29304541, PMCID: PMC5821113, DOI: 10.1160/th17-07-0511.Peer-Reviewed Original ResearchMeSH KeywordsAnticoagulantsCardiologyCause of DeathFemaleFollow-Up StudiesHemorrhageHumansInternational CooperationIschemiaPregnancyPregnancy Complications, CardiovascularProspective StudiesPuerperal DisordersPulmonary EmbolismRecurrenceRegistriesResearch DesignTreatment OutcomeVena Cava FiltersVenous ThromboembolismConceptsOutcomes of patientsVenous thromboembolismDeep vein thrombosisPulmonary embolismOngoing registryClinical trialsOutcomes of VTEPragmatic comparative effectiveness studyLong-term outcome dataUnstable pulmonary embolismPattern of presentationPatterns of carePrevalent vascular diseaseComparative effectiveness studiesHospital deathVein thrombosisVenous thrombosisPreventable causeComputerized registryVascular diseaseRIETEInclusion criteriaThrombotic conditionsOutcome dataPatients
2015
Hospital Variability in Use of Anticoagulant Strategies During Acute Myocardial Infarction Treated With an Early Invasive Strategy
Arnold SV, Li SX, Alexander KP, Spertus JA, Nallamothu BK, Curtis JP, Kosiborod M, Gupta A, Wang TY, Lin H, Dharmarajan K, Strait KM, Lowe TJ, Krumholz HM. Hospital Variability in Use of Anticoagulant Strategies During Acute Myocardial Infarction Treated With an Early Invasive Strategy. Journal Of The American Heart Association 2015, 4: e002009. PMID: 26077589, PMCID: PMC4599539, DOI: 10.1161/jaha.115.002009.Peer-Reviewed Original ResearchConceptsEarly invasive strategyAnticoagulant strategiesMyocardial infarctionBleeding rateInvasive strategyAcute myocardial infarction patientsOptimal anticoagulant strategyHalf of patientsPercutaneous coronary interventionAcute myocardial infarctionMyocardial infarction patientsHospital use patternsComparative effectiveness studiesRisk-standardized mortalityChoice of anticoagulantsMedian odds ratioCoronary interventionPatient factorsSystemic anticoagulationHospital variabilityInfarction patientsPrincipal diagnosisOdds ratioMultivariate regression modelPatterns of useEffectiveness of implantable cardioverter-defibrillators in survivors of inhospital cardiac arrest
Chan PS, Krumholz HM, Spertus JA, Curtis LH, Li Y, Hammill BG, Nallamothu BK, investigators A. Effectiveness of implantable cardioverter-defibrillators in survivors of inhospital cardiac arrest. American Heart Journal 2015, 169: 870-878.e1. PMID: 26027626, PMCID: PMC4451609, DOI: 10.1016/j.ahj.2015.02.016.Peer-Reviewed Original ResearchConceptsInhospital cardiac arrestLong-term mortalityHospital cardiac arrestCardiac arrestICD treatmentLower long-term mortalityImplantable cardioverter-defibrillator therapyHigh illness acuityHigher unadjusted mortalityICD-treated patientsCardiac Arrest RegistryCardioverter-defibrillator therapyPulseless ventricular tachycardiaHigh-risk populationComparative effectiveness studiesLong-term survivalPropensity score analysisLower mortality rateArrest etiologyEligible survivorsICD trialsHospital deathICD therapyIndex hospitalizationUntreated patients