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 spending
2012
The impact of hypomethylating agents on the cost of care and survival of elderly patients with myelodysplastic syndromes
Wang R, Gross CP, Frick K, Xu X, Long J, Raza A, Galili N, Zikria J, Guan Y, Ma X. The impact of hypomethylating agents on the cost of care and survival of elderly patients with myelodysplastic syndromes. Leukemia Research 2012, 36: 1370-1375. PMID: 22917770, PMCID: PMC3458648, DOI: 10.1016/j.leukres.2012.07.020.Peer-Reviewed Original ResearchConceptsCost of careMyelodysplastic syndromeMDS patientsMedicare expendituresComparative cost-effectiveness studyCohort of patientsTwo-year survivalNon-cancer controlsCost-effectiveness studiesElderly patientsPrevalent cancerEconomic burdenPatientsMajor subtypesSurvivalCareSyndromeUnited StatesHMAsSurvival probabilityEarly periodCohortAgentsCancerSubtypes
2007
Dichlorvos exposure and human cancer risk: results from the Agricultural Health Study
Koutros S, Mahajan R, Zheng T, Hoppin JA, Ma X, Lynch CF, Blair A, Alavanja MC. Dichlorvos exposure and human cancer risk: results from the Agricultural Health Study. Cancer Causes & Control 2007, 19: 59-65. PMID: 17943454, PMCID: PMC2822646, DOI: 10.1007/s10552-007-9070-0.Peer-Reviewed Original ResearchConceptsDDVP exposurePesticide applicatorsRate ratioAgricultural Health Study cohortCumulative exposure daysHealth Study cohortSmall excess riskConfidence intervalsLicensed pesticide applicatorsPoisson regression analysisLymphohematopoietic cancersStudy cohortIncident casesPotential confoundersExcess riskProstate cancerFamily historyCancer riskExposure daysCancerComprehensive questionnaireRegression analysisCohortExposureRisk