2021
Trend of Non-contrast Chest Computed Tomography Use in the Lung Cancer Screening Era: SEER-Medicare 2008–2016
Yang SC, Gross C, Wang JD, Wang SY. Trend of Non-contrast Chest Computed Tomography Use in the Lung Cancer Screening Era: SEER-Medicare 2008–2016. Journal Of General Internal Medicine 2021, 36: 3589-3591. PMID: 33469753, PMCID: PMC8606484, DOI: 10.1007/s11606-020-06586-4.Peer-Reviewed Original Research
2020
Geographic Variations of Potentially Curative Treatments for Hepatocellular Carcinoma in the United States: A SEER-Medicare Study.
Cheng E, Hung P, Wang SY. Geographic Variations of Potentially Curative Treatments for Hepatocellular Carcinoma in the United States: A SEER-Medicare Study. Journal Of The National Comprehensive Cancer Network 2020, 18: 729-736. PMID: 32502978, DOI: 10.6004/jnccn.2020.7529.Peer-Reviewed Original ResearchMeSH KeywordsAgedCarcinoma, HepatocellularFemaleHumansLiver NeoplasmsMaleMedicareSEER ProgramSurvival AnalysisUnited StatesConceptsHospital referral regionsCurative treatmentHepatocellular carcinomaIncidence of HCCCox proportional hazards modelSEER-Medicare studyPercutaneous ethanol injectionHepatitis B virusProportional hazards modelMore comorbiditiesSurgical resectionSurvival benefitTreatment patternsSEER-MedicareB virusRadiofrequency ablationEthanol injectionTreatment utilizationReferral regionsBetter survivalLower riskHazards modelPatientsSurvivalTreatmentAssociations Between End-of-Life Expenditures and Hospice Stay Length Vary by Clinical Condition and Expenditure Duration
Hung P, Hsu SH, Wang SY. Associations Between End-of-Life Expenditures and Hospice Stay Length Vary by Clinical Condition and Expenditure Duration. Value In Health 2020, 23: 697-704. PMID: 32540226, DOI: 10.1016/j.jval.2020.01.021.Peer-Reviewed Original ResearchConceptsChronic obstructive pulmonary diseaseCongestive heart failureEOL expendituresHospice staysEnd Results-Medicare dataLonger hospice staysObstructive pulmonary diseaseMonths of lifeDays of lifeDistinct disease trajectoriesPatient disease groupsCancer decedentsDifferential associationsHeart failureAggressive endPulmonary diseaseHospice lengthMedical covariatesCancer patientsHospice useDisease groupClinical conditionsLife careDisease trajectoriesPatients
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 effects
2018
Associations of preoperative breast magnetic resonance imaging with subsequent mastectomy and breast cancer mortality
Wang SY, Long JB, Killelea BK, Evans SB, Roberts KB, Silber AL, Davidoff AJ, Sedghi T, Gross CP. Associations of preoperative breast magnetic resonance imaging with subsequent mastectomy and breast cancer mortality. Breast Cancer Research And Treatment 2018, 172: 453-461. PMID: 30099634, PMCID: PMC6193824, DOI: 10.1007/s10549-018-4919-3.Peer-Reviewed Original ResearchConceptsBreast-conserving surgeryBreast cancer mortalitySubsequent mastectomyCancer mortalityPre-operative MRIBreast cancerSubgroup analysisStage I/II breast cancerEnd Results-Medicare datasetPreoperative breast magnetic resonanceEarly-stage breast cancerMagnetic resonance imaging useReceipt of radiotherapyBreast magnetic resonanceClinical outcomesCox regressionResultsOur sampleImproved outcomesAdjusted ratesMRI useOlder womenLower riskMastectomyImaging useRadiotherapy
2017
Are Small Breast Cancers Good because They Are Small or Small because They Are Good?
Lannin DR, Wang S. Are Small Breast Cancers Good because They Are Small or Small because They Are Good? New England Journal Of Medicine 2017, 376: 2286-91. PMID: 28591529, DOI: 10.1056/nejmsr1613680.Peer-Reviewed Original ResearchThe 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 periodLonger Periods Of Hospice Service Associated With Lower End-Of-Life Spending In Regions With High Expenditures
Wang S, Hsu SH, Huang S, Soulos PR, Gross CP. Longer Periods Of Hospice Service Associated With Lower End-Of-Life Spending In Regions With High Expenditures. Health Affairs 2017, 36: 328-336. PMID: 28167723, PMCID: PMC5972542, DOI: 10.1377/hlthaff.2016.0683.Peer-Reviewed Original Research
2016
Associations Between End-of-Life Cancer Care Patterns and Medicare Expenditures.
Wang SY, Hall J, Pollack CE, Adelson K, Davidoff AJ, Long JB, Gross CP. Associations Between End-of-Life Cancer Care Patterns and Medicare Expenditures. Journal Of The National Comprehensive Cancer Network 2016, 14: 1001-8. PMID: 27496116, PMCID: PMC5577560, DOI: 10.6004/jnccn.2016.0107.Peer-Reviewed Original ResearchConceptsDay of deathLife care expendituresLife careIntensive endCancer decedentsIntensive care unit admissionCare expendituresLife care interventionsCare unit admissionEmergency department visitsSEER-Medicare databaseLast monthProportion of decedentsHospital referral regionsExpenditure differencesHospital deathICU admissionUnit admissionDepartment visitsHospice enrollmentIntensive careHighest quintileLater chemotherapyHospice useLowest quintilePreoperative breast magnetic resonance imaging and contralateral breast cancer occurrence among older women with ductal carcinoma in situ
Wang SY, Long JB, Killelea BK, Evans SB, Roberts KB, Silber A, Gross CP. Preoperative breast magnetic resonance imaging and contralateral breast cancer occurrence among older women with ductal carcinoma in situ. Breast Cancer Research And Treatment 2016, 158: 139-148. PMID: 27287780, PMCID: PMC5554869, DOI: 10.1007/s10549-016-3858-0.Peer-Reviewed Original ResearchConceptsContralateral breast cancerMagnetic resonance imagingPreoperative magnetic resonance imagingDuctal carcinomaMRI usePreoperative breast magnetic resonance imagingEnd Results-Medicare datasetInvasive contralateral breast cancerOccult contralateral breast cancerResonance imagingSynchronous contralateral breast cancerImpact of MRIStage-specific incidence ratesPreoperative MRI useBreast magnetic resonance imagingBreast cancer occurrenceCBC eventsCBC ratesCumulative incidencePropensity score approachIncidence rateInvasive diseaseBreast cancerCancer occurrenceOlder womenTrends in end-of-life cancer care in the Medicare program
Wang SY, Hall J, Pollack CE, Adelson K, Bradley EH, Long JB, Gross CP. Trends in end-of-life cancer care in the Medicare program. Journal Of Geriatric Oncology 2016, 7: 116-125. PMID: 26783015, PMCID: PMC5577563, DOI: 10.1016/j.jgo.2015.11.007.Peer-Reviewed Original ResearchConceptsLife cancer careDay of deathAggressive endLife careCancer careHospital deathHospice enrollmentEmergency departmentIntensive care unit admissionEnd Results-Medicare dataAggressiveness of endLate hospice enrollmentLife chemotherapy useCare unit admissionHospital referral regionsResult of cancerProportion of beneficiariesChemotherapy useICU admissionUnit admissionED visitsPatient demographicsTumor characteristicsReferral regionsMedicare beneficiaries
2015
Preoperative Breast Magnetic Resonance Imaging and Contralateral Breast Cancer Occurrence Among Older Women With Breast Cancer
Wang SY, Long JB, Killelea BK, Evans SB, Roberts KB, Silber A, Gross CP. Preoperative Breast Magnetic Resonance Imaging and Contralateral Breast Cancer Occurrence Among Older Women With Breast Cancer. Journal Of Clinical Oncology 2015, 34: 321-328. PMID: 26628465, PMCID: PMC4872032, DOI: 10.1200/jco.2015.62.9741.Peer-Reviewed Original ResearchConceptsContralateral breast cancerPreoperative magnetic resonance imagingMagnetic resonance imagingBreast cancerCBC eventsMRI useOlder womenPreoperative breast magnetic resonance imagingOccult contralateral breast cancerResonance imagingStage IIEarly-stage breast cancerPreoperative MRI useBreast magnetic resonance imagingBreast cancer occurrenceSEER-Medicare databaseImpact of detectionDetection rateCumulative incidenceCancer occurrenceStage ICancerPropensity scoreWomenPatientsThe 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 beneficiariesQuintilePatientsCancerCareTherapy
2014
Understanding Regional Variation in Medicare Expenditures for Initial Episodes of Prostate Cancer Care
Wang SY, Wang R, Yu JB, Ma X, Xu X, Kim SP, Soulos PR, Saraf A, Gross CP. Understanding Regional Variation in Medicare Expenditures for Initial Episodes of Prostate Cancer Care. Medical Care 2014, 52: 680-687. PMID: 25023913, PMCID: PMC4129645, DOI: 10.1097/mlr.0000000000000158.Peer-Reviewed Original ResearchConceptsAncillary proceduresPatient characteristicsTreatment modalitiesTreatment intensityEnd Results-Medicare databaseProstate cancer careSpecific treatment modalitiesContribution of patientHospital referral regionsInitial treatmentCancer careInitial episodeNoncancer controlsProstate cancerQuintile 5Referral regionsSubstantial geographic variationCare costsMedicare expendituresCostly modalityTreatment factorsMean expenditureLowest expenditure quintileSurgeryModalitiesCardiovascular events, early discontinuation of trastuzumab, and their impact on survival
Wang SY, Long JB, Hurria A, Owusu C, Steingart RM, Gross CP, Chen J. Cardiovascular events, early discontinuation of trastuzumab, and their impact on survival. Breast Cancer Research And Treatment 2014, 146: 411-419. PMID: 24951268, DOI: 10.1007/s10549-014-3029-0.Peer-Reviewed Original ResearchConceptsCardiovascular eventsEarly discontinuationTrastuzumab treatmentCause mortalityTrastuzumab therapyTrastuzumab discontinuationBreast cancerCox proportional hazards modelContinuous trastuzumab treatmentAdverse cardiovascular eventsPopulation-based cohortFemale Medicare beneficiariesHigher mortality riskProportional hazards modelNon-significant increaseCardiovascular complicationsOlder patientsOverall survivalHeart failureAtrial fibrillationDiscontinuationMortality riskOlder womenMedicare beneficiariesHazards modelExamining the Cost-Effectiveness of Radiation Therapy Among Older Women With Favorable-Risk Breast Cancer
Sen S, Wang SY, Soulos PR, Frick KD, Long JB, Roberts KB, Yu JB, Evans SB, Chagpar AB, Gross CP. Examining the Cost-Effectiveness of Radiation Therapy Among Older Women With Favorable-Risk Breast Cancer. Journal Of The National Cancer Institute 2014, 106: dju008. PMID: 24598714, PMCID: PMC3982782, DOI: 10.1093/jnci/dju008.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overBrachytherapyBreast NeoplasmsComorbidityCost-Benefit AnalysisFemaleHealth ExpendituresHumansLife ExpectancyMedicareNeoplasm Recurrence, LocalNeoplasm StagingQuality of LifeQuality-Adjusted Life YearsRadiotherapy, Intensity-ModulatedRisk AssessmentRisk FactorsSampling StudiesSEER ProgramUnited StatesConceptsExternal beam radiation therapyIncremental cost-effectiveness ratioQuality-adjusted life yearsBreast cancerOlder womenRadiation therapyEnd Results-Medicare databaseRisk breast cancerBeam radiation therapyCost-effectiveness ratioNewer radiation therapy modalitiesQuality of lifeRadiation therapy modalitiesLocal recurrenceTrial criteriaRT modalityTherapy modalitiesLife yearsCancerIncremental costTherapyWomenBaseline stateNew modality
2013
The association of preoperative breast magnetic resonance imaging and multiple breast surgeries among older women with early stage breast cancer
Wang SY, Kuntz KM, Tuttle TM, Jacobs DR, Kane RL, Virnig BA. The association of preoperative breast magnetic resonance imaging and multiple breast surgeries among older women with early stage breast cancer. Breast Cancer Research And Treatment 2013, 138: 137-147. PMID: 23354364, DOI: 10.1007/s10549-013-2420-6.Peer-Reviewed Original ResearchConceptsEarly-stage breast cancerStage breast cancerMultiple surgeriesPreoperative breast MRIBreast cancerAdditional surgeryBreast surgeryPreoperative breast magnetic resonance imagingEnd Results-Medicare databaseBreast MRIInitial treatment episodeMore additional surgeriesPhysician-level predictorsBreast magnetic resonance imagingMagnetic resonance imaging (MRI) utilizationInitial treatment periodMultilevel logistic regression modelsMedian odds ratioMagnetic resonance imagingLogistic regression modelsPrimary surgeryTumor characteristicsMRI evaluationPartial mastectomyTreatment episodes