2021
Effects of forced disruption in Medicaid managed care on children with asthma
Piwnica‐Worms K, Staiger B, Ross JS, Rosenthal MS, Ndumele CD. Effects of forced disruption in Medicaid managed care on children with asthma. Health Services Research 2021, 56: 668-676. PMID: 33624290, PMCID: PMC8313960, DOI: 10.1111/1475-6773.13643.Peer-Reviewed Original ResearchConceptsPrimary care providersPersistent asthmaCare plansOutpatient visitsCare utilizationCare administrative claims dataEmergency department utilizationHealth care utilizationAdministrative claims dataIndicators of asthmaProportion of childrenPatients outpatientHealth utilizationAdministrative claimsAsthmaCare providersClaims dataNumber of childrenConsistent associationMedicaidVisitsChildrenOutpatientsPercentage point decreaseEnrollment data
2019
Feasibility of Using Real-World Data to Replicate Clinical Trial Evidence
Bartlett VL, Dhruva SS, Shah ND, Ryan P, Ross JS. Feasibility of Using Real-World Data to Replicate Clinical Trial Evidence. JAMA Network Open 2019, 2: e1912869. PMID: 31596493, PMCID: PMC6802419, DOI: 10.1001/jamanetworkopen.2019.12869.Peer-Reviewed Original ResearchConceptsPrimary end pointClinical trialsReal-world evidenceEnd pointElectronic health recordsEHR dataExclusion criteriaClinical trial evidenceRandomized clinical trialsHigh-impact general medical journalsReal-world populationInsurance claimsTraditional clinical trialsCross-sectional analysisSame clinical questionPercentage of trialsPrimary outcomeClinical outcomesClinical evidenceTrial evidenceTrial populationTrial inclusionObservational studyAdministrative claimsMAIN OUTCOME
2017
Trends in Omalizumab Utilization for Asthma: Evidence of Suboptimal Patient Selection
Jeffery MM, Shah ND, Karaca-Mandic P, Ross JS, Rank MA. Trends in Omalizumab Utilization for Asthma: Evidence of Suboptimal Patient Selection. The Journal Of Allergy And Clinical Immunology In Practice 2017, 6: 1568-1577.e4. PMID: 28958746, DOI: 10.1016/j.jaip.2017.07.034.Peer-Reviewed Original ResearchConceptsOmalizumab initiationAsthma controlICS-LABAPatient selectionLow adherenceBetter asthma controlCohort of nonusersSuboptimal patient selectionPoor asthma controlLow adherence ratesPatient-level characteristicsLarge US databaseMedicare Advantage beneficiariesAsthma biologicsExacerbation frequencyOmalizumab useIncident useComparison cohortICS/Medication adherenceAdherence ratesPrevalent usersAdministrative claimsAsthmaUtilization trends
2016
Impact of Hospitalization for Acute Myocardial Infarction on Adherence to Statins Among Older Adults
Kronish IM, Ross JS, Zhao H, Muntner P. Impact of Hospitalization for Acute Myocardial Infarction on Adherence to Statins Among Older Adults. Circulation Cardiovascular Quality And Outcomes 2016, 9: 364-371. PMID: 27220368, PMCID: PMC4956547, DOI: 10.1161/circoutcomes.115.002418.Peer-Reviewed Original ResearchMeSH KeywordsAdministrative Claims, HealthcareAgedAged, 80 and overDatabases, FactualDyslipidemiasFemaleHealth Knowledge, Attitudes, PracticeHospitalizationHumansHydroxymethylglutaryl-CoA Reductase InhibitorsMaleMedicareMedication AdherenceMyocardial InfarctionRisk AssessmentRisk FactorsTherapeuticsTime FactorsUnited StatesConceptsAcute myocardial infarctionImpact of hospitalizationAMI hospitalizationMyocardial infarctionProportion of patientsPatients adherentStatin adherentNonadherent patientsAdherent patientsMedicare patientsHospitalizationAdministrative claimsStatinsMedicare beneficiariesPatientsPneumoniaSubsequent adherenceOlder adultsInfarctionRandom sampleAdherenceAdherentYearsProportionCohort
2010
Cumulative Exposure to Ionizing Radiation From Diagnostic and Therapeutic Cardiac Imaging Procedures A Population-Based Analysis
Chen J, Einstein AJ, Fazel R, Krumholz HM, Wang Y, Ross JS, Ting HH, Shah ND, Nasir K, Nallamothu BK. Cumulative Exposure to Ionizing Radiation From Diagnostic and Therapeutic Cardiac Imaging Procedures A Population-Based Analysis. Journal Of The American College Of Cardiology 2010, 56: 702-711. PMID: 20619569, PMCID: PMC2952402, DOI: 10.1016/j.jacc.2010.05.014.Peer-Reviewed Original ResearchConceptsCardiac imaging proceduresCumulative effective doseMSv/yearEffective dosesImaging proceduresEffective doseRadiation exposureGeneral populationAnnual population-based ratesCardiac computed tomography (CT) studiesMean cumulative effective dosePopulation-based annual rateCumulative effective dosesMyocardial perfusion imagingComputed tomography studyPopulation-based ratesSubstantial radiation exposureCumulative dosesAdministrative claimsMyocardial perfusionPhysician's officeCumulative exposurePerfusion imagingPatientsTomography studyHospital Volume and 30-Day Mortality for Three Common Medical Conditions
Ross JS, Normand SL, Wang Y, Ko DT, Chen J, Drye EE, Keenan PS, Lichtman JH, Bueno H, Schreiner GC, Krumholz HM. Hospital Volume and 30-Day Mortality for Three Common Medical Conditions. New England Journal Of Medicine 2010, 362: 1110-1118. PMID: 20335587, PMCID: PMC2880468, DOI: 10.1056/nejmsa0907130.Peer-Reviewed Original ResearchConceptsAcute myocardial infarctionHospital volumeHeart failureMyocardial infarctionVolume thresholdRisk factorsAnnual hospital volumeHigh-volume hospitalsPatient risk factorsOdds of deathCommon medical conditionsAcute care hospitalsMedicare administrative claimsHierarchical logistic regression modelsCross-sectional analysisLogistic regression modelsCare hospitalHospital characteristicsReduced oddsMedical conditionsAdministrative claimsInfarctionPatientsPneumoniaService beneficiaries