2024
Global Disparities in the Characteristics and Outcomes of Leukemia Clinical Trials: A Cross-Sectional Study of the ClinicalTrials.gov Database.
Alhajahjeh A, Rotter L, Stempel J, Grimshaw A, Bewersdorf J, Blaha O, Kewan T, Podoltsev N, Shallis R, Mendez L, Stahl M, Zeidan A. Global Disparities in the Characteristics and Outcomes of Leukemia Clinical Trials: A Cross-Sectional Study of the ClinicalTrials.gov Database. JCO Global Oncology 2024, 10: e2400316. PMID: 39621951, DOI: 10.1200/go-24-00316.Peer-Reviewed Original Research
2023
Taking a chance: How likely am I to receive my preferred treatment in a clinical trial?
Walter S, Blaha O, Esserman D. Taking a chance: How likely am I to receive my preferred treatment in a clinical trial? Statistical Methods In Medical Research 2023, 32: 572-592. PMID: 36628522, PMCID: PMC9983058, DOI: 10.1177/09622802221146305.Peer-Reviewed Original ResearchConceptsPatient preference designConcordance ratePreferred treatmentClinical trialsDifferent treatment preferencesProportion of patientsParallel group designPreference designPatient's primary motivationTrial patientsPoor outcomeBlinded trialClinical equipoiseTreatment preferencesTwo-armZelen designAlternative treatmentStudy outcomesStudy designTrialsTreatmentPatientsPotential participantsOutcomesGroup design
2022
Design and analysis of cluster randomized trials with time‐to‐event outcomes under the additive hazards mixed model
Blaha O, Esserman D, Li F. Design and analysis of cluster randomized trials with time‐to‐event outcomes under the additive hazards mixed model. Statistics In Medicine 2022, 41: 4860-4885. PMID: 35908796, PMCID: PMC9588628, DOI: 10.1002/sim.9541.Peer-Reviewed Original ResearchConceptsSample size formulaCluster sizeNew sample size formulaSample size proceduresSize formulaEffect parametersSandwich variance estimatorStatistical inferenceCluster size variationEvent outcomesRandomization-based testsImproved inferenceSize proceduresTreatment effect parametersVariance estimatorSmall sample biasesAnalysis of clustersSimulation studyUnequal cluster sizesFrailty termVariance inflation factorFailure timeSample size requirementsMixed modelsAppropriate definitionBayesian local exchangeability design for phase II basket trials
Liu Y, Kane M, Esserman D, Blaha O, Zelterman D, Wei W. Bayesian local exchangeability design for phase II basket trials. Statistics In Medicine 2022, 41: 4367-4384. PMID: 35777367, PMCID: PMC10279458, DOI: 10.1002/sim.9514.Peer-Reviewed Original ResearchDesign and analysis of partially randomized preference trials with propensity score stratification
Wang Y, Li F, Blaha O, Meng C, Esserman D. Design and analysis of partially randomized preference trials with propensity score stratification. Statistical Methods In Medical Research 2022, 31: 1515-1537. PMID: 35469503, PMCID: PMC10530658, DOI: 10.1177/09622802221095673.Peer-Reviewed Original ResearchSample size calculation in hierarchical 2×2 factorial trials with unequal cluster sizes
Tian Z, Esserman D, Tong G, Blaha O, Dziura J, Peduzzi P, Li F. Sample size calculation in hierarchical 2×2 factorial trials with unequal cluster sizes. Statistics In Medicine 2022, 41: 645-664. PMID: 34978097, PMCID: PMC8962918, DOI: 10.1002/sim.9284.Peer-Reviewed Original Research