2021
Patterns of Care for Older Patients With Myelofibrosis: A Population-based Study
Meckstroth S, Wang R, Ma X, Podoltsev N. Patterns of Care for Older Patients With Myelofibrosis: A Population-based Study. Clinical Lymphoma Myeloma & Leukemia 2021, 21: e551-e558. PMID: 33648884, DOI: 10.1016/j.clml.2021.01.025.Peer-Reviewed Original ResearchConceptsPatterns of careOlder patientsEnd Results-Medicare databaseJAK inhibitor eraHigh-risk patientsPopulation-based studyUse of ruxolitinibJAK inhibitor ruxolitinibUnited States FoodRuxolitinib approvalMedian ageMedian timeTreatment patternsD claimsCurrent treatmentInhibitor ruxolitinibPatientsBetter outcomesClinical experienceDrug AdministrationMedicare Part BMyelofibrosisRuxolitinibStates FoodNew drugs
2018
Physician 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
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 beneficiariesQuintilePatientsCancerCareTherapy
2009
Clarification on the categorization of comorbidities
Wang R, Ma X. Clarification on the categorization of comorbidities. Leukemia Research 2009, 34: e74. PMID: 19783302, PMCID: PMC2815216, DOI: 10.1016/j.leukres.2009.08.036.Peer-Reviewed Original ResearchComorbidities and survival in a large cohort of patients with newly diagnosed myelodysplastic syndromes
Wang R, Gross CP, Halene S, Ma X. Comorbidities and survival in a large cohort of patients with newly diagnosed myelodysplastic syndromes. Leukemia Research 2009, 33: 1594-1598. PMID: 19324411, PMCID: PMC2749891, DOI: 10.1016/j.leukres.2009.02.005.Peer-Reviewed Original ResearchConceptsMyelodysplastic syndromeHazard ratioComorbid conditionsMDS patientsCharlson indexMultivariate Cox proportional hazards modelPrognosis of MDSChronic obstructive pulmonary diseaseCox proportional hazards modelLarge population-based studyCongestive heart failureObstructive pulmonary diseaseRole of comorbiditiesMedian survival timePopulation-based studyProportional hazards modelMDS survivalHeart failurePulmonary diseaseIndependent determinantsShorter survivalLarge cohortSurvival timeHazards modelComorbidities
2008
Exposure to infections through day-care attendance and risk of childhood leukaemia
Urayama KY, Ma X, Buffler PA. Exposure to infections through day-care attendance and risk of childhood leukaemia. Radiation Protection Dosimetry 2008, 132: 259-266. PMID: 18940822, PMCID: PMC2879097, DOI: 10.1093/rpd/ncn271.Peer-Reviewed Original ResearchConceptsDay care attendanceRisk of childhoodAcute lymphoblastic leukemiaChildhood leukemiaCommon infectionsMore common infectionsNon-Hispanic white childrenNorthern California Childhood Leukemia StudyCommon B-cell precursorDose-response effectPrevious epidemiological studiesCalifornia Childhood Leukemia StudyChildhood Leukemia StudyB cell precursorsDay care settingsSummary measuresLymphoblastic leukemiaEpidemiological studiesNumber of childrenMajority of studiesInfectionLeukemiaLeukemia StudySocial contactRelevant studies
2005
RAS mutation is associated with hyperdiploidy and parental characteristics in pediatric acute lymphoblastic leukemia
Wiemels JL, Zhang Y, Chang J, Zheng S, Metayer C, Zhang L, Smith MT, Ma X, Selvin S, Buffler PA, Wiencke JK. RAS mutation is associated with hyperdiploidy and parental characteristics in pediatric acute lymphoblastic leukemia. Leukemia 2005, 19: 415-419. PMID: 15674422, DOI: 10.1038/sj.leu.2403641.Peer-Reviewed Original ResearchConceptsRAS mutationsMaternal ageLeukemia casesPediatric acute lymphoblastic leukemiaAcute lymphoblastic leukemia casesDiagnostic bone marrow samplesIncident leukemia casesPaternal preconception smokingNorthern California Childhood Leukemia StudyAcute lymphoblastic leukemiaLymphoblastic leukemia casesBone marrow samplesKRAS codon 12California Childhood Leukemia StudyRAS gene mutationsChildhood Leukemia StudyEtiology of subtypesPreconception smokingCase seriesLymphoblastic leukemiaLeukemia patientsMultivariable modelMarrow samplesHigh hyperdiploidyChildhood leukemia