2020
Physician trajectories of abandoning long‐course breast radiotherapy and their cost impact
Xu X, Soulos PR, Herrin J, Wang S, Pollack CE, Evans SB, Yu JB, Gross CP. Physician trajectories of abandoning long‐course breast radiotherapy and their cost impact. Health Services Research 2020, 56: 497-506. PMID: 33070305, PMCID: PMC8143683, DOI: 10.1111/1475-6773.13572.Peer-Reviewed Original ResearchConceptsPhysician peer groupsWhole breast irradiationCF-WBIRisk-adjusted ratesBreast radiotherapyPractice patternsLow useChronic Conditions Data WarehouseDistinct practice patternsPatients' clinical characteristicsSetting of radiotherapyAdjuvant breast radiotherapyYears of ageDistinct trajectoriesImportant cost implicationsHigher useAdjuvant radiotherapyClinical characteristicsEligible womenBreast cancerCost implicationsLatent class growth analysisService beneficiariesMedicare programRadiotherapy
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