2024
Supplemental Nutrition Assistance Program Work Requirements and Safety-Net Program Participation
Ndumele C, Factor H, Lavallee M, Lollo A, Wallace J. Supplemental Nutrition Assistance Program Work Requirements and Safety-Net Program Participation. JAMA Internal Medicine 2024, 185 PMID: 39495527, DOI: 10.1001/jamainternmed.2024.5932.Peer-Reviewed Original ResearchSupplemental Nutrition Assistance ProgramSNAP work requirementsAble-bodied adultsChronic conditionsCharacteristics of individualsLow-incomeCohort studyMedicaid coverageNutrition Assistance ProgramSocioeconomic characteristics of individualsProportion of enrolleesChronic illnessMain OutcomesProgram enrollmentMedicaid enrolleesYounger beneficiariesSocioeconomic characteristicsMedicaidStatistically significant changesTarget populationEnrolleesAssistance programsCaregiversSafety-net programsBeneficiariesAlternative Payment Models and Performance in Federally Qualified Health Centers
Markowski J, Wallace J, Schlesinger M, Ndumele C. Alternative Payment Models and Performance in Federally Qualified Health Centers. JAMA Internal Medicine 2024, 184: 1065-1073. PMID: 38976258, PMCID: PMC11231906, DOI: 10.1001/jamainternmed.2024.2754.Peer-Reviewed Original ResearchPayment modelsMeasures of health care qualityPayer mixFederally Qualified Health CentersCohort studyValue-based payment modelsHealth care safety netColorectal cancer screeningHealth promotion modelHealth care qualityQualified Health CentersUniform Data SystemHealth outcome measuresAlternative payment modelsRisk profileFQHC patientsAssociated with clinicCare qualityChild BMIAdult BMICancer screeningState Medicaid programsIncentivizing qualityHealth centersRetrospective cohort studyAdverse selection and network design under regulated plan prices: Evidence from Medicaid
Kreider A, Layton T, Shepard M, Wallace J. Adverse selection and network design under regulated plan prices: Evidence from Medicaid. Journal Of Health Economics 2024, 97: 102901. PMID: 38944945, PMCID: PMC11392643, DOI: 10.1016/j.jhealeco.2024.102901.Peer-Reviewed Original ResearchDiscrepancies in Estimating Excess Death by Political Party Affiliation During the COVID-19 Pandemic—Reply
Wallace J, Goldsmith-Pinkham P, Schwartz J. Discrepancies in Estimating Excess Death by Political Party Affiliation During the COVID-19 Pandemic—Reply. JAMA Internal Medicine 2024, 184: 119-120. PMID: 38010659, DOI: 10.1001/jamainternmed.2023.6068.Peer-Reviewed Original Research
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 ResearchExcess Death Rates for Republican and Democratic Registered Voters in Florida and Ohio During the COVID-19 Pandemic
Wallace J, Goldsmith-Pinkham P, Schwartz J. Excess Death Rates for Republican and Democratic Registered Voters in Florida and Ohio During the COVID-19 Pandemic. JAMA Internal Medicine 2023, 183: 916-923. PMID: 37486680, PMCID: PMC10366951, DOI: 10.1001/jamainternmed.2023.1154.Peer-Reviewed Original ResearchConceptsExcess death rateDeath rateCOVID-19 pandemicLow vaccination ratesCOVID-19 vaccinationCross-sectional studyAge 25 yearsCOVID-19 vaccineHigher COVID-19 death ratesCOVID-19 death ratesCross-sectional comparisonMedian ageAdjusted analysisVaccination ratesExcess mortalityVaccination attitudesMAIN OUTCOMEWeekly deathsMortality rateExcess deathsMortality recordsMortality dataStudy sampleDeathVaccineAssociation 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 ResearchConceptsAge 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 homesWhat Difference Does a Health Plan Make? Evidence from Random Plan Assignment in Medicaid.
Geruso M, Layton T, Wallace J. What Difference Does a Health Plan Make? Evidence from Random Plan Assignment in Medicaid. American Economic Journal Applied Economics 2023, 15: 341-379. PMID: 37621701, PMCID: PMC10445793, DOI: 10.1257/app.20210843.Peer-Reviewed Original ResearchRisk Adjustment And Health Equity: The Authors Reply
McWilliams J, Weinreb G, Ndumele C, Wallace J. Risk Adjustment And Health Equity: The Authors Reply. Health Affairs 2023, 42: 732-732. PMID: 37126745, DOI: 10.1377/hlthaff.2023.00297.Peer-Reviewed Original ResearchWhat Does a Provider Network Do? Evidence from Random Assignment in Medicaid Managed Care
Wallace J. What Does a Provider Network Do? Evidence from Random Assignment in Medicaid Managed Care. American Economic Journal Economic Policy 2023, 15: 473-509. DOI: 10.1257/pol.20210162.Peer-Reviewed Original ResearchState-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 ResearchSupporting Innovation in Medicaid Policy - Interventions to Increase Adoption of RCTs.
Wallace J, Smith J, Venkataramani A. Supporting Innovation in Medicaid Policy - Interventions to Increase Adoption of RCTs. The New England Journal Of Medicine 2022, 386: 1775-1777. PMID: 35522003, DOI: 10.1056/NEJMp2119726.Peer-Reviewed Original ResearchMeasuring Changes in Disparity Gaps: An Application to Health Insurance
Goldsmith-Pinkham P, Jiang K, Song Z, Wallace J. Measuring Changes in Disparity Gaps: An Application to Health Insurance. AEA Papers And Proceedings 2022, 112: 356-360. DOI: 10.1257/pandp.20221111.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