2019
Income disparities in needle biopsy patients prior to breast cancer surgery across physician peer groups
Killelea BK, Herrin J, Soulos PR, Pollack CE, Forman HP, Yu J, Xu X, Tannenbaum S, Wang SY, Gross CP. Income disparities in needle biopsy patients prior to breast cancer surgery across physician peer groups. Breast Cancer 2019, 27: 381-388. PMID: 31792804, PMCID: PMC7512133, DOI: 10.1007/s12282-019-01028-4.Peer-Reviewed Original ResearchConceptsPhysician peer groupsLow-income patientsNeedle biopsyOdds ratioHigh-income patientsBreast cancer surgeryMethodsThe SurveillanceCancer surgeryIncome patientsMedicare databaseBiopsy patientsMedicare beneficiariesPatientsBiopsyLow incomeGroupDisparitiesReceiptEnd resultHigher incomeSurgeryPeer groupEpidemiologyFurther workGroup-level effectsHospital Variation in Spending for Lung Cancer Resection in Medicare Beneficiaries
Jean RA, Bongiovanni T, Soulos PR, Chiu AS, Herrin J, Kim N, Xu X, Kim AW, Gross CP. Hospital Variation in Spending for Lung Cancer Resection in Medicare Beneficiaries. The Annals Of Thoracic Surgery 2019, 108: 1710-1716. PMID: 31400321, DOI: 10.1016/j.athoracsur.2019.06.048.Peer-Reviewed Original ResearchConceptsStage I non-small cell lung carcinomaNon-small cell lung carcinomaCell lung carcinomaHospital volumeLung carcinomaComplication rateMedicare beneficiariesExcess costsEnd Results-MedicareIndex hospital costsLung cancer careMean excess costLung cancer resectionHospital-level variationNumber of complicationsLung cancer treatmentEpisode of careCost of careLowest cost quintileIndex hospitalizationCancer resectionHospital factorsPerioperative careHospital variationSurgical hospitalization
2018
Surgeon peer network characteristics and adoption of new imaging techniques in breast cancer: A study of perioperative MRI
Tannenbaum SS, Soulos PR, Herrin J, Pollack CE, Xu X, Christakis NA, Forman HP, Yu JB, Killelea BK, Wang S, Gross CP. Surgeon peer network characteristics and adoption of new imaging techniques in breast cancer: A study of perioperative MRI. Cancer Medicine 2018, 7: 5901-5909. PMID: 30444005, PMCID: PMC6308117, DOI: 10.1002/cam4.1821.Peer-Reviewed Original ResearchConceptsPrimary care physiciansPatient-sharing networksBreast cancerPerioperative MRISubsequent receiptNon-cancer patientsBreast cancer practiceMultivariable hierarchical modelsUse of MRIClinical characteristicsCare physiciansFemale patientsCancer practiceMedicare databaseNew imaging techniquesMedicare sampleStage 0Claims dataPatientsPhysician groupsMRISurgeonsCancerEquivocal evidencePhysiciansPhysician peer group characteristics and timeliness of breast cancer surgery
Bachand J, Soulos PR, Herrin J, Pollack CE, Xu X, Ma X, Gross CP. Physician peer group characteristics and timeliness of breast cancer surgery. Breast Cancer Research And Treatment 2018, 170: 657-665. PMID: 29693229, PMCID: PMC6048589, DOI: 10.1007/s10549-018-4789-8.Peer-Reviewed Original ResearchConceptsPhysician peer groupsSurgical delayProvider densityPatient racial compositionBreast cancerEnd Results-Medicare dataBreast cancer patientsBreast cancer surgeryResultsThe study sampleConclusionsThe likelihoodBlack patientsCancer surgeryCancer patientsSurgeryPatientsStudy sampleWomenCancerAssociationGroupGroup characteristicsPurposeLittleInterdisciplinary groupPeer groupEpidemiology
2017
The Impact of Social Contagion on Physician Adoption of Advanced Imaging Tests in Breast Cancer
Pollack CE, Soulos PR, Herrin J, Xu X, Christakis NA, Forman HP, Yu JB, Killelea BK, Wang SY, Gross CP. The Impact of Social Contagion on Physician Adoption of Advanced Imaging Tests in Breast Cancer. Journal Of The National Cancer Institute 2017, 109: djw330. PMID: 28376191, PMCID: PMC6059114, DOI: 10.1093/jnci/djw330.Peer-Reviewed Original ResearchConceptsMagnetic resonance imagingBaseline usePositron emission tomography scanEnd Results-MedicareEmission tomography scanBreast cancer practiceImaging modalitiesAdvanced imaging testsHierarchical logistic regression modelsLogistic regression modelsPatient characteristicsUnproven benefitCancer practiceMRI/PETTomography scanBreast cancerMRI useImaging testsClinical practicePET useResonance imagingPET imagingPhysician peersPhysician adoptionBaseline period
2015
The Role of Patient Factors, Cancer Characteristics, and Treatment Patterns in the Cost of Care for Medicare Beneficiaries with Breast Cancer
Xu X, Herrin J, Soulos PR, Saraf A, Roberts KB, Killelea BK, Wang SY, Long JB, Wang R, Ma X, Gross CP. The Role of Patient Factors, Cancer Characteristics, and Treatment Patterns in the Cost of Care for Medicare Beneficiaries with Breast Cancer. Health Services Research 2015, 51: 167-186. PMID: 26119176, PMCID: PMC4722219, DOI: 10.1111/1475-6773.12328.Peer-Reviewed Original ResearchConceptsBreast cancer careHospital referral regionsCancer careMedicare expendituresBreast cancerRadiation therapyTreatment factorsMean Medicare expendituresEnd Results-MedicareSpecific treatment modalitiesContribution of patientCost of careHighest spending quintilePatient factorsTreatment patternsTumor characteristicsCancer characteristicsTreatment modalitiesReferral regionsMedicare beneficiariesQuintilePatientsCancerCareTherapyOlder Women With Localized Breast Cancer: Costs And Survival Rates Increased Across Two Time Periods
Feinstein AJ, Long J, Soulos PR, Ma X, Herrin J, Frick KD, Chagpar AB, Krumholz HM, Yu JB, Ross JS, Gross CP. Older Women With Localized Breast Cancer: Costs And Survival Rates Increased Across Two Time Periods. Health Affairs 2015, 34: 592-600. PMID: 25847641, DOI: 10.1377/hlthaff.2014.1119.Peer-Reviewed Original ResearchConceptsStage II diseaseStage III diseaseCancer-related costsCancer careBreast cancerMedian costSurvival rateEnd Results Program-MedicareFive-year survivalCancer care costsBreast surgerySurvival outcomesImproved outcomesOlder womenRadiation therapyCare costsStage IIDiseaseStudy periodWomenCancerCareSignificant national attentionOutcomesPercent
2013
Use of New Treatment Modalities for Non-small Cell Lung Cancer Care in the Medicare Population
Vest MT, Herrin J, Soulos PR, Decker RH, Tanoue L, Michaud G, Kim AW, Detterbeck F, Morgensztern D, Gross CP. Use of New Treatment Modalities for Non-small Cell Lung Cancer Care in the Medicare Population. CHEST Journal 2013, 143: 429-435. PMID: 23187634, PMCID: PMC3566996, DOI: 10.1378/chest.12-1149.Peer-Reviewed Original ResearchConceptsNon-small cell lung cancerStage I non-small cell lung cancerVideo-assisted thoracoscopic surgeryProportion of patientsOlder patientsCancer careNon-small cell lung cancer careEarly-stage non-small cell lung cancerStage non-small cell lung cancerEnd Results-Medicare databaseLung cancer careCell lung cancerCurative local therapyNew treatment modalitiesOverall useNew surgical techniqueType of treatmentNew radiation modalitiesRadiation therapy modalitiesSurgical resectionCurative therapyLocal therapyMore patientsThoracoscopic surgeryMean age
2012
The Adoption of New Adjuvant Radiation Therapy Modalities Among Medicare Beneficiaries With Breast Cancer: Clinical Correlates and Cost Implications
Roberts KB, Soulos PR, Herrin J, Yu JB, Long JB, Dostaler E, Gross CP. The Adoption of New Adjuvant Radiation Therapy Modalities Among Medicare Beneficiaries With Breast Cancer: Clinical Correlates and Cost Implications. International Journal Of Radiation Oncology • Biology • Physics 2012, 85: 1186-1192. PMID: 23182396, PMCID: PMC3606652, DOI: 10.1016/j.ijrobp.2012.10.009.Peer-Reviewed Original ResearchConceptsExternal beam radiation therapyRadiation therapy modalitiesRadiation therapy costsBreast cancerRadiation therapyTherapy modalitiesTherapy costsBrachytherapy useRadiation oncologistsEnd Results-Medicare databaseConventional external beam radiation therapyAdoption of intensityBreast-conserving surgeryRadiation therapy useUse of IMRTBeam radiation therapyNewer radiation therapy modalitiesHierarchical logistic regressionHospital-based facilitiesTherapy useClinical factorsClinical correlatesTreatment optionsTreatment choicePhysician preferenceAssessing 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
2010
Impact of Hospice Disenrollment on Health Care Use and Medicare Expenditures for Patients With Cancer
Carlson MD, Herrin J, Du Q, Epstein AJ, Barry CL, Morrison RS, Back AL, Bradley EH. Impact of Hospice Disenrollment on Health Care Use and Medicare Expenditures for Patients With Cancer. Journal Of Clinical Oncology 2010, 28: 4371-4375. PMID: 20805463, PMCID: PMC2954136, DOI: 10.1200/jco.2009.26.1818.Peer-Reviewed Original ResearchConceptsHealth care useHospice disenrollmentCare useMedicare expendituresHospice usersEmergency departmentIntensive care unit admissionEnd Results-Medicare dataHigher health care useDisease-directed treatmentCare unit admissionRate of hospitalizationIntensive care unitLargest diagnostic groupResult of cancerTotal Medicare expendituresHospital deathUnit admissionCare unitMultivariable analysisFamily caregiversPatientsHospice teamPatient careDiagnostic groups
2009
Hospice Characteristics and the Disenrollment of Patients with Cancer
Carlson MD, Herrin J, Du Q, Epstein AJ, Cherlin E, Morrison RS, Bradley EH. Hospice Characteristics and the Disenrollment of Patients with Cancer. Health Services Research 2009, 44: 2004-2021. PMID: 19656230, PMCID: PMC2796311, DOI: 10.1111/j.1475-6773.2009.01002.x.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overFemaleHospice CareHumansMaleMedicareNeoplasmsPatient DropoutsSEER ProgramUnited StatesConceptsPatient disenrollmentEnd Results-Medicare dataSmaller hospicesTypes of hospicesNew hospiceLong-stay patientsHigh disenrollment ratesMedicare hospice benefitClinical characteristicsDisenrollment ratesPatientsHospice benefitSecondary analysisHospiceDisenrollmentRural statusCancerOrganizational-level barriersStaff mixHospice characteristicsIndependent effectsFiscal intermediariesHigh rateMedicare certificationEpidemiology