2024
Trends in use of intensive care during hospitalizations at the end‐of‐life among older adults with advanced cancer
Jain S, Long J, Rao V, Law A, Walkey A, Prsic E, Lindenauer P, Krumholz H, Gross C. Trends in use of intensive care during hospitalizations at the end‐of‐life among older adults with advanced cancer. Journal Of The American Geriatrics Society 2024 PMID: 39090970, DOI: 10.1111/jgs.19119.Peer-Reviewed Original ResearchEnd-of-life hospitalizationsLife-sustaining treatmentEnd-of-lifeIntensity of careIn-hospital deathOlder adultsIntensive care unitAdvanced cancerRisk-adjusted hospitalEvaluate trendsIncreased intensity of careIntensive care unit useSEER-Medicare dataIntensive care unit careMultinomial regression modelsYear of diagnosisIntensive careHospital categoryMedicare beneficiariesSEER-MedicareHospitalization ratesCareCancer characteristicsNoninvasive ventilationHospitalArea Vulnerability and Disparities in Therapy for Patients With Metastatic Renal Cell Carcinoma
Rahman S, Long J, Westvold S, Leapman M, Spees L, Hurwitz M, McManus H, Gross C, Wheeler S, Dinan M. Area Vulnerability and Disparities in Therapy for Patients With Metastatic Renal Cell Carcinoma. JAMA Network Open 2024, 7: e248747. PMID: 38687479, PMCID: PMC11061765, DOI: 10.1001/jamanetworkopen.2024.8747.Peer-Reviewed Original ResearchConceptsMetastatic renal cell carcinomaArea-level measuresRenal cell carcinomaPatient-level factorsSystemic therapyEthnic disparitiesRelative risk ratiosSocially vulnerable areasCell carcinomaMeasures of social vulnerabilityMedicare beneficiariesCohort studyFee-for-service Medicare Parts AOdds ratioReceipt of systemic therapyLogistic regressionArea-level characteristicsAssociated with lack of treatmentNon-Hispanic blacksRetrospective cohort studyIndividual-level demographicsNon-Hispanic whitesAssociated with disparitiesUS Medicare beneficiariesMeasures of disadvantage
2023
Total and treatment-related costs of care associated with in patients with metastatic renal cell carcinoma receiving targeted or immune therapy.
Rahman S, Long J, Westvold S, Wheeler S, Spees L, Leapman M, Hurwitz M, McManus H, Gross C, Dinan M. Total and treatment-related costs of care associated with in patients with metastatic renal cell carcinoma receiving targeted or immune therapy. JCO Oncology Practice 2023, 19: 28-28. DOI: 10.1200/op.2023.19.11_suppl.28.Peer-Reviewed Original ResearchMetastatic renal cell carcinomaOral anticancer agentsInitial treatmentRetrospective cohort studyUse of immunotherapyYear of diagnosisRenal cell carcinomaDirect treatment costsMean Medicare paymentsMedicare paymentsMedicare Part DInitial therapyCohort studyMetastatic diagnosisCell carcinomaCombination therapyImmunotherapyMedicare beneficiariesPatientsAge 65Disease controlOlder ageStudy periodTherapyDiagnosisDisparities in immune and targeted therapy utilization for older US patients with metastatic renal cell carcinoma
Chow R, Long J, Hassan S, Wheeler S, Spees L, Leapman M, Hurwitz M, McManus H, Gross C, Dinan M. Disparities in immune and targeted therapy utilization for older US patients with metastatic renal cell carcinoma. JNCI Cancer Spectrum 2023, 7: pkad036. PMID: 37202354, PMCID: PMC10276895, DOI: 10.1093/jncics/pkad036.Peer-Reviewed Original ResearchConceptsOral anticancer agentsTherapy utilizationMedicare beneficiariesNon-Hispanic white raceMetastatic renal cell carcinomaNon-Hispanic black raceOlder US patientsUS Medicare beneficiariesRenal cell carcinomaLogistic regression modelsTherapy receiptMultivariable adjustmentSystemic therapyMale sexUS patientsCell carcinomaStudy criteriaBlack raceFemale sexPatient raceWhite raceImmunotherapyOutcomes persistSexPatientsEvolution of systemic therapy from 2015 to 2019 for older patients in the United States with metastatic renal cell carcinoma.
Chow R, Long J, Hassan S, Wheeler S, Spees L, Leapman M, Hurwitz M, McManus H, Gross C, Dinan M. Evolution of systemic therapy from 2015 to 2019 for older patients in the United States with metastatic renal cell carcinoma. Journal Of Clinical Oncology 2023, 41: 610-610. DOI: 10.1200/jco.2023.41.6_suppl.610.Peer-Reviewed Original ResearchMetastatic renal cell carcinomaImmune checkpoint inhibitorsOral anti-cancer agentsNon-Hispanic white patientsSystemic therapyRenal cell carcinomaNHW patientsWhite patientsCell carcinomaMedicare beneficiariesService Medicare Parts ARetrospective cohort studyOverall treatment rateMedicare Part AIO therapyMRCC therapyAnti-cancer agentsCheckpoint inhibitorsCohort studyOlder patientsRandomized trialsSurvival improvementFirst therapyStudy criteriaTreatment receiptUse of Monitoring Tests Among Patients With Localized Prostate Cancer Managed With Observation
Leapman M, Wang R, Loeb S, Seibert T, Gaylis F, Lowentritt B, Brown G, Chen R, Lin D, Witte J, Cooperberg M, Catalona W, Gross C, Ma X. Use of Monitoring Tests Among Patients With Localized Prostate Cancer Managed With Observation. Journal Of Urology 2023, 209: 710-718. PMID: 36753746, DOI: 10.1097/ju.0000000000003159.Peer-Reviewed Original ResearchConceptsIntermediate-risk prostate cancerMixed-effects Poisson regressionPSA testingProstate biopsyProstate cancerEffects Poisson regressionMedicare beneficiariesPoisson regressionAdditional prostate biopsyRetrospective cohort studyProstate MRILocalized prostate cancerRepeat prostate biopsyRate of biopsyRace/ethnicityCensus tract povertyMedian followCohort studyMedian ageMonitoring testsProvider factorsPSA testClinical riskBiopsySociodemographic factors
2018
Association between Oncologist Ownership of Imaging Facilities and Utilization: An Analysis of Positron-Emission Tomography (PET) Use in Lymphoma Settings with Variable PET Utility
Huntington S, Zhu W, Hoag J, Wang R, Zeidan A, Giri S, Podoltsev N, Gore S, Ma X, Gross C, Davidoff A. Association between Oncologist Ownership of Imaging Facilities and Utilization: An Analysis of Positron-Emission Tomography (PET) Use in Lymphoma Settings with Variable PET Utility. Blood 2018, 132: 3538. DOI: 10.1182/blood-2018-99-115140.Peer-Reviewed Original ResearchChronic lymphocytic leukemiaConsensus guidelinesFollicular lymphomaPET scansClinical utilityMedicare beneficiariesSetting of CLLEnd Results-Medicare dataPopulation-based cohort studyLarge B-cell lymphomaLow-value imagingLymphoma-directed therapyFirst-line therapyPatients' sociodemographic characteristicsElixhauser Comorbidity IndexPositron emission tomography useYears of treatmentLow clinical utilityLymphoma settingPet ownershipB-cell lymphomaHierarchical multivariable modelUse of PETTreating oncologistComorbidity indexPersistent Use of Extended Fractionation Palliative Radiation Therapy for Medicare Beneficiaries with Metastatic Breast Cancer: 2011-2014
Yu J, Pollack C, Herrin J, Zhu W, Soulos P, Xu X, Gross C. Persistent Use of Extended Fractionation Palliative Radiation Therapy for Medicare Beneficiaries with Metastatic Breast Cancer: 2011-2014. International Journal Of Radiation Oncology • Biology • Physics 2018, 102: e425. DOI: 10.1016/j.ijrobp.2018.07.1241.Peer-Reviewed Original ResearchMP53-08 USE OF PROSTATE MAGNETIC RESONANCE IMAGING AMONG MEDICARE BENEFICIARIES WITH LOW-RISK PROSTATE CANCER IS ASSOCIATED WITH A HIGHER LIKELIHOOD OF DEFINITIVE TREATMENT
Leapman M, Wang R, Park H, Yu J, Gross C, Ma X. MP53-08 USE OF PROSTATE MAGNETIC RESONANCE IMAGING AMONG MEDICARE BENEFICIARIES WITH LOW-RISK PROSTATE CANCER IS ASSOCIATED WITH A HIGHER LIKELIHOOD OF DEFINITIVE TREATMENT. Journal Of Urology 2018, 199: e707. DOI: 10.1016/j.juro.2018.02.1679.Peer-Reviewed Original Research
2015
Lack of Association Between Costs of Care and Overall Survival (OS) Among Medicare Beneficiaries with Myelodysplastic Syndromes (MDS) in the United States (US)
Zeidan A, Wang R, Davidoff A, Gore S, Soulos P, Huntington S, Gross C, Ma X. Lack of Association Between Costs of Care and Overall Survival (OS) Among Medicare Beneficiaries with Myelodysplastic Syndromes (MDS) in the United States (US). Blood 2015, 126: 873. DOI: 10.1182/blood.v126.23.873.873.Peer-Reviewed Original ResearchDisability Status ScoreOverall survivalMyelodysplastic syndromeMDS patientsCost of careStudy cohortLack of associationHistologic subtypeStatus scoreMedicare beneficiariesEnd Results-Medicare databaseProportional hazards regression modelsOverall study cohortMedian overall survivalOutcomes of patientsElixhauser comorbidity scoreDate of diagnosisEntire study cohortKaplan-Meier methodHazards regression modelsDisease-related costsNon-white raceEnd of studyDate of deathMedicare Part A
2014
Evolution of Breast Cancer Screening in the Medicare Population: Clinical and Economic Implications
Killelea BK, Long JB, Chagpar AB, Ma X, Wang R, Ross JS, Gross CP. Evolution of Breast Cancer Screening in the Medicare Population: Clinical and Economic Implications. Journal Of The National Cancer Institute 2014, 106: dju159. PMID: 25031307, PMCID: PMC4155428, DOI: 10.1093/jnci/dju159.Peer-Reviewed Original ResearchConceptsEnd Results-MedicareBreast cancer stageCohort of womenEarly-stage tumorsBreast cancer screeningAdjunct imagingSignificant changesCancer screeningCancer stageIncidence rateBreast cancerAdjunct procedureOlder womenMedicare populationMedicare beneficiariesClinical practiceComputer-aided detectionPoisson regressionNational feeCohortBreast ultrasoundWomenEarlier cohortsLater cohortsMedicare spendingStereotactic body radiosurgery versus intensity modulated radiotherapy for prostate cancer: Comparison of toxicity.
Yu J, Cramer L, Herrin J, Soulos P, Potosky A, Gross C. Stereotactic body radiosurgery versus intensity modulated radiotherapy for prostate cancer: Comparison of toxicity. Journal Of Clinical Oncology 2014, 32: 89-89. DOI: 10.1200/jco.2014.32.4_suppl.89.Peer-Reviewed Original ResearchStereotactic body radiosurgeryGU complicationsProstate cancerSBRT patientsIMRT patientsGU toxicityRate of complicationsRetrospective observational studyBladder outlet obstructionHigh cure ratesRandom-effects modelCost of treatmentOutlet obstructionUrinary incontinenceTreatment initiationRetrospective studyCure rateUrethral strictureDiagnosis codesPrimary treatmentObservational studyRadiation therapyMean costMedicare beneficiariesPatients
2012
Proton Versus Intensity-Modulated Radiotherapy for Prostate Cancer: Patterns of Care and Early Toxicity
Yu JB, Soulos PR, Herrin J, Cramer LD, Potosky AL, Roberts KB, Gross CP. Proton Versus Intensity-Modulated Radiotherapy for Prostate Cancer: Patterns of Care and Early Toxicity. Journal Of The National Cancer Institute 2012, 105: 25-32. PMID: 23243199, PMCID: PMC3536640, DOI: 10.1093/jnci/djs463.Peer-Reviewed Original ResearchConceptsIntensity-modulated radiotherapyProstate cancerMedicare beneficiariesGenitourinary toxicityEarly toxicityProton radiotherapyMultivariable logistic regressionPatterns of careMain outcome measuresType of radiotherapyMedicare reimbursementClinical benefitRetrospective studyPRT patientsOutcome measuresComprehensive cohortPRT useIMRT patientsPatientsSociodemographic characteristicsRadiotherapyCancerLogistic regressionMonthsSignificant differencesShort-term complications and use of breast brachytherapy in the national Medicare population in 2008-2009.
Presley C, Soulos P, Herrin J, Roberts K, Yu J, Killelea B, Lesnikoski B, Long J, Gross C. Short-term complications and use of breast brachytherapy in the national Medicare population in 2008-2009. Journal Of Clinical Oncology 2012, 30: 1030-1030. DOI: 10.1200/jco.2012.30.15_suppl.1030.Peer-Reviewed Original ResearchWhole breast irradiationHospital referral regionsBone complicationsClinical characteristicsSkin complicationsReferral regionsEarly-stage breast cancerNational treatment patternsOne-year overallReceipt of chemotherapyNumber of comorbiditiesShort-term complicationsDeep tissuesNational Medicare populationAdjuvant radiationComplication rateTreatment patternsDiagnosis codesBreast cancerMedicare claimsMedicare populationComplicationsMedicare beneficiariesTreatment groupsClinical practiceAssessing the Impact of a Cooperative Group Trial on Breast Cancer Care in the Medicare Population
Soulos PR, Yu JB, Roberts KB, Raldow AC, Herrin J, Long JB, Gross CP. Assessing the Impact of a Cooperative Group Trial on Breast Cancer Care in the Medicare Population. Journal Of Clinical Oncology 2012, 30: 1601-1607. PMID: 22393088, PMCID: PMC3383112, DOI: 10.1200/jco.2011.39.4890.Peer-Reviewed Original ResearchMeSH KeywordsAge FactorsAgedAged, 80 and overBreast NeoplasmsCombined Modality TherapyDisease-Free SurvivalFemaleHumansLife ExpectancyMastectomy, SegmentalMedicareNeoplasm InvasivenessNeoplasm StagingPrognosisRadiotherapy, AdjuvantRisk AssessmentSEER ProgramSurvival AnalysisTreatment OutcomeUnited StatesConceptsUse of RTAdjuvant radiation therapyRadiation therapyOlder womenRT useLife expectancyBreast cancerMedicare populationEnd Results-Medicare dataStage I breast cancerStrata of ageCooperative group trialsI breast cancerBreast cancer careStrata of patientsHealth system characteristicsLog-binomial regressionShort life expectancySample of womenTreatment guidelinesCancer careInclusion criteriaGroup trialsMedicare beneficiariesClinical practice