2024
USPSTF Colorectal Cancer Screening Recommendation and Uptake for Individuals Aged 45 to 49 Years
Siddique S, Wang R, Yasin F, Gaddy J, Zhang L, Gross C, Ma X. USPSTF Colorectal Cancer Screening Recommendation and Uptake for Individuals Aged 45 to 49 Years. JAMA Network Open 2024, 7: e2436358. PMID: 39361285, PMCID: PMC11450516, DOI: 10.1001/jamanetworkopen.2024.36358.Peer-Reviewed Original ResearchConceptsUS Preventive Services Task ForceUS Preventive Services Task Force recommendationsColorectal cancer screening uptakeAverage-risk individualsScreening uptakeHigher socioeconomic statusSocioeconomic statusScreening recommendationsColorectal cancerColorectal cancer screening recommendationsPreventive Services Task ForceCohort studyCancer screening recommendationsScreening uptake ratesInterrupted time series analysisLow socioeconomic statusPrivate insurance beneficiariesScreening ratesSocioeconomic disparitiesRetrospective cohort studyMain OutcomesPotential disparitiesEvaluate changesClaims dataAbsolute change
2022
Changes in Prostate-Specific Antigen Testing Relative to the Revised US Preventive Services Task Force Recommendation on Prostate Cancer Screening
Leapman MS, Wang R, Park H, Yu JB, Sprenkle PC, Cooperberg MR, Gross CP, Ma X. Changes in Prostate-Specific Antigen Testing Relative to the Revised US Preventive Services Task Force Recommendation on Prostate Cancer Screening. JAMA Oncology 2022, 8: 41-47. PMID: 34762100, PMCID: PMC8587214, DOI: 10.1001/jamaoncol.2021.5143.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overCohort StudiesEarly Detection of CancerHumansMaleMass ScreeningMiddle AgedProstate-Specific AntigenProstatic NeoplasmsRetrospective StudiesConceptsProstate cancer screeningUS Preventive Services Task ForcePSA testingCancer screeningInterrupted time series analysisCohort studyUS Preventive Services Task Force (USPSTF) recommendationDraft statementLarge national cohort studyEligible beneficiariesPSA testing ratesRetrospective cohort studyRate of PSANational cohort studyProstate-specific antigenAge-adjusted ratesTask Force recommendationsUSPSTF guidelinesMedian ageGuideline changesProstate cancerMedian numberMAIN OUTCOMEClaims dataTesting rates
2021
Analysis of Survival Among Adults With Early-Onset Colorectal Cancer in the National Cancer Database
Cheng E, Blackburn HN, Ng K, Spiegelman D, Irwin ML, Ma X, Gross CP, Tabung FK, Giovannucci EL, Kunz PL, Llor X, Billingsley K, Meyerhardt JA, Ahuja N, Fuchs CS. Analysis of Survival Among Adults With Early-Onset Colorectal Cancer in the National Cancer Database. JAMA Network Open 2021, 4: e2112539. PMID: 34132794, PMCID: PMC8209612, DOI: 10.1001/jamanetworkopen.2021.12539.Peer-Reviewed Original ResearchConceptsEarly-onset colorectal cancerOnset colorectal cancerNational Cancer DatabaseColorectal cancerAge 51Overall survivalCancer DatabaseIncidence of CRCCox proportional hazards regressionPrimary colorectal cancerKaplan-Meier analysisProportional hazards regressionAge 50 yearsAge 25 yearsAnalysis of survivalCohort studySurvival benefitHazards regressionUnadjusted analysesCancer incidenceMAIN OUTCOMEAge 35Survival advantageLower riskStage IRegional Adoption of Commercial Gene Expression Testing for Prostate Cancer
Leapman MS, Wang R, Ma S, Gross CP, Ma X. Regional Adoption of Commercial Gene Expression Testing for Prostate Cancer. JAMA Oncology 2021, 7: 52-58. PMID: 33237277, PMCID: PMC7689565, DOI: 10.1001/jamaoncol.2020.6086.Peer-Reviewed Original ResearchConceptsProstate cancerCohort studyGenomic testingTissue-based genomic testsProportion of patientsDynamic cohort studyProstate cancer careProstate cancer screeningHospital referral region levelCommercial health insuranceGene expression testingEligible patientsMedian ageCancer careCancer screeningInclusion criteriaFindings highlight factorsHRR levelMAIN OUTCOMEAdministrative claimsGroup 2Group 1Medicare beneficiariesPatientsMedian household income
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
2013
The cost implications of prostate cancer screening in the Medicare population
Ma X, Wang R, Long JB, Ross JS, Soulos PR, Yu JB, Makarov DV, Gold HT, Gross CP. The cost implications of prostate cancer screening in the Medicare population. Cancer 2013, 120: 96-102. PMID: 24122801, PMCID: PMC3867600, DOI: 10.1002/cncr.28373.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overCohort StudiesEarly Detection of CancerHumansKallikreinsMaleMedicareNeoplasm StagingProstate-Specific AntigenProstatic NeoplasmsSEER ProgramUnited StatesConceptsProstate cancerScreening costsAnnual screening costsPopulation-based cohortProstate cancer screeningHospital referral region levelMale Medicare beneficiariesProstate-specific antigenCancer screeningLowest quartileHRR levelMedicare populationMedicare beneficiariesOlder menNational feeCancerService Medicare programCancer diagnosisMenQuartilePSACost implicationsAnnual expenditureMedicare programBiopsy
2012
Impact of the 2008 US Preventive Services Task Force Recommendation to Discontinue Prostate Cancer Screening Among Male Medicare Beneficiaries
Ross JS, Wang R, Long JB, Gross CP, Ma X. Impact of the 2008 US Preventive Services Task Force Recommendation to Discontinue Prostate Cancer Screening Among Male Medicare Beneficiaries. JAMA Internal Medicine 2012, 172: 1601-1603. PMID: 22987029, PMCID: PMC3597450, DOI: 10.1001/archinternmed.2012.3726.Peer-Reviewed Original ResearchMeSH KeywordsAdvisory CommitteesAgedEarly Detection of CancerGuidelines as TopicHumansIncidenceMaleMass ScreeningMedicareProstatic NeoplasmsRetrospective StudiesUnited States