2023
After 50 Years, Health Professional Shortage Areas Had No Significant Impact On Mortality Or Physician Density
Markowski J, Wallace J, Ndumele C. After 50 Years, Health Professional Shortage Areas Had No Significant Impact On Mortality Or Physician Density. Health Affairs 2023, 42: 1507-1516. PMID: 37931191, DOI: 10.1377/hlthaff.2023.00478.Peer-Reviewed Original ResearchAssociation between Medicare eligibility at age 65 years and in-hospital treatment patterns and health outcomes for patients with trauma: regression discontinuity approach
Bhaumik D, Ndumele C, Scott J, Wallace J. Association between Medicare eligibility at age 65 years and in-hospital treatment patterns and health outcomes for patients with trauma: regression discontinuity approach. The BMJ 2023, 382: e074289. PMID: 37433620, PMCID: PMC10334336, DOI: 10.1136/bmj-2022-074289.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedBody FluidsHospitalizationHospitalsHumansMedicareMiddle AgedNursing HomesUnited StatesConceptsAge 65 yearsHealth insurance coverageHospital admissionTreatment patternsInsurance coverageSimilar patientsTrauma encountersAge 65Health systemLevel II trauma centerPatient's hospital admissionShare of patientsMain outcome measuresProcess of careDischarge planning processHospital mortalityHospital stayTrauma centerTrauma bayTreatment decisionsOutcome measuresAmerican CollegeInpatient facilitiesLevel INursing homesState-Level Variation in Supplemental Maternity Kick Payments in Medicaid Managed Care
Auty S, Daw J, Wallace J. State-Level Variation in Supplemental Maternity Kick Payments in Medicaid Managed Care. JAMA Internal Medicine 2023, 183: 80-82. PMID: 36374489, PMCID: PMC9664368, DOI: 10.1001/jamainternmed.2022.5146.Peer-Reviewed Original ResearchRisk Adjustment And Promoting Health Equity In Population-Based Payment: Concepts And Evidence
McWilliams J, Weinreb G, Ding L, Ndumele C, Wallace J. Risk Adjustment And Promoting Health Equity In Population-Based Payment: Concepts And Evidence. Health Affairs 2023, 42: 105-114. PMID: 36623215, PMCID: PMC9901844, DOI: 10.1377/hlthaff.2022.00916.Peer-Reviewed Original ResearchConceptsRisk adjustmentHealth equityCurrent risk adjustmentHealth care useSocial risk factorsPromoting Health EquityFunctional statusCare useRisk factorsMedicare populationEthnic disparitiesHispanic beneficiariesSocial determinantsWhite beneficiariesPopulation-based paymentsPopulation-based payment modelAnnual spendingPayment modelsHigher proportionPopulationAdjustmentPredictive accuracy
2022
Long-Term Stability of Coverage Among Michigan Medicaid Beneficiaries : A Cohort Study.
Ndumele C, Lollo A, Krumholz H, Schlesinger M, Wallace J. Long-Term Stability of Coverage Among Michigan Medicaid Beneficiaries : A Cohort Study. Annals Of Internal Medicine 2022, 176: 22-28. PMID: 36469920, DOI: 10.7326/m22-1313.Peer-Reviewed Original ResearchResidual Confounding in Health Plan Performance Assessments: Evidence From Randomization in Medicaid.
Wallace J, McWilliams JM, Lollo A, Eaton J, Ndumele CD. Residual Confounding in Health Plan Performance Assessments: Evidence From Randomization in Medicaid. Annals Of Internal Medicine 2022, 175: 314-324. PMID: 34978862, DOI: 10.7326/m21-0881.Peer-Reviewed Original ResearchConceptsResidual confoundingObservational populationRandomized populationCare useMedicaid populationRisk adjustmentAvoidable emergency department visitsState Medicaid populationDental care usePrimary care useEmergency department visitsHealth plan performancePlan performancePatient characteristicsDepartment visitsBaseline differencesPatient differencesArnold VenturesFurther adjustmentEnrollee characteristicsEnrolleesTotal spendingProvider effectsConfoundingMean spending
2021
Changes in Racial and Ethnic Disparities in Access to Care and Health Among US Adults at Age 65 Years
Wallace J, Jiang K, Goldsmith-Pinkham P, Song Z. Changes in Racial and Ethnic Disparities in Access to Care and Health Among US Adults at Age 65 Years. JAMA Internal Medicine 2021, 181: 1207-1215. PMID: 34309621, PMCID: PMC8314180, DOI: 10.1001/jamainternmed.2021.3922.Peer-Reviewed Original ResearchConceptsAge 65 yearsSelf-reported healthCost-related barriersCross-sectional studyEthnic disparitiesUsual sourceUS adultsHispanic individualsBlack individualsBehavioral Risk Factor Surveillance SystemRisk Factor Surveillance SystemPoor self-reported healthInfluenza vaccination ratesInsurance coverageHealth insuranceUS Affordable Care ActHispanic respondentsProportion of respondentsPrevention WideInfluenza vaccinationInfluenza vaccineVaccination ratesAffordable Care ActUS CentersMAIN OUTCOMEOut-of-Network Laboratory Test Spending, Utilization, and Prices in the US
Song Z, Lillehaugen T, Wallace J. Out-of-Network Laboratory Test Spending, Utilization, and Prices in the US. JAMA 2021, 325: 1674-1676. PMID: 33904879, PMCID: PMC8080228, DOI: 10.1001/jama.2021.0720.Peer-Reviewed Original Research