Elena Graetz, PhD
Senior Biostatistical AnalystCards
About
Titles
Senior Biostatistical Analyst
Education & Training
- PhD
- University of Illinois at Chicago, Statistics
- BSc
- University of Illinois at Chicago, Mathematics (2016)
- ND
- Freie Universitaet Berlin, Mathematics (2014)
Research
Publications
2025
Simultaneous Symmetrizing Surgery on the Contralateral Breast in Unilateral Autologous Breast Reconstruction Is Cost-Effective
Zhao K, Kammien A, Graetz E, Moore M, Evans B, Schneider E, Ayyala H. Simultaneous Symmetrizing Surgery on the Contralateral Breast in Unilateral Autologous Breast Reconstruction Is Cost-Effective. Journal Of Reconstructive Microsurgery 2025 PMID: 39821138, DOI: 10.1055/a-2517-0803.Peer-Reviewed Original ResearchFree flap reconstructionSymmetrization surgeryFlap reconstructionBreast reconstructionDelayed reconstructionPatient characteristicsSingle-stage breast reconstructionUnilateral autologous breast reconstructionAutologous breast reconstructionSurgical site infectionThirty-day complicationsContralateral breastUnilateral reconstructionImmediate reconstructionSite infectionWound dehiscenceThirty-dayIncreased complicationsNational administrative dataSurgeryRevision surgeryComplicationsPatientsWilcoxon testChi-squareSimultaneous Symmetrizing Surgery on the Contralateral Breast in Unilateral Autologous Breast Reconstruction is Cost-Effective.
Zhao KL, Kammien AJ, Graetz E, Moore MS, Evans BG, Schneider EB, Ayyala HS. Simultaneous Symmetrizing Surgery on the Contralateral Breast in Unilateral Autologous Breast Reconstruction is Cost-Effective. J Reconstr Microsurg 2025 PMID: 39821138, DOI: 10.1055/a-2517-0803.Peer-Reviewed Original ResearchCharacterization of trends in preoperative hemoglobin A1c testing prior to metabolic and bariatric surgery: a retrospective, observational study.
Hamid SA, Graetz E, Zolfaghari EJ, Schultz KS, Schneider EB, Gibbs KE. Characterization of trends in preoperative hemoglobin A1c testing prior to metabolic and bariatric surgery: a retrospective, observational study. Perioper Med (Lond) 2025, 14: 3. PMID: 39789653, DOI: 10.1186/s13741-024-00483-8.Peer-Reviewed Original ResearchCharacterization of trends in preoperative hemoglobin A1c testing prior to metabolic and bariatric surgery: a retrospective, observational study
Hamid S, Graetz E, Zolfaghari E, Schultz K, Schneider E, Gibbs K. Characterization of trends in preoperative hemoglobin A1c testing prior to metabolic and bariatric surgery: a retrospective, observational study. Perioperative Medicine 2025, 14: 3. PMID: 39789653, PMCID: PMC11720298, DOI: 10.1186/s13741-024-00483-8.Peer-Reviewed Original ResearchRobotic Roux-en-Y gastric bypassBariatric surgeryDiabetes statusSleeve gastrectomyA1c testingRoux-en-Y gastric bypassIncreased oddsPreoperative hemoglobin A1cDemographic characteristics of patientsCharacteristics of patientsNon-insulin-dependent diabetesInsulin-dependent patientsBaseline diabetes statusLogistic regression analysisSleep apneaCardiopulmonary comorbiditiesAmerican Society of MetabolicGastric bypassMBSAQIP databaseClinical factorsHemoglobin A1c testingMBS patientsSociety recommendationsHemoglobin A1cDependent patients
2024
Local Infrastructure and Economy Predicts Traffic Related Fatalities in Children.
Hellmann ZJ, Graetz E, Rehman S, Moore M, Schneider EB, Christison-Lagay ER, Solomon DG. Local Infrastructure and Economy Predicts Traffic Related Fatalities in Children. J Pediatr Surg 2024, 162109. PMID: 39753412, DOI: 10.1016/j.jpedsurg.2024.162109.Peer-Reviewed Original ResearchLocal Infrastructure and Economy Predicts Traffic Related Fatalities in Children
Hellmann Z, Graetz E, Rehman S, Moore M, Schneider E, Christison-Lagay E, Solomon D. Local Infrastructure and Economy Predicts Traffic Related Fatalities in Children. Journal Of Pediatric Surgery 2024, 162109. PMID: 39753412, DOI: 10.1016/j.jpedsurg.2024.162109.Peer-Reviewed Original ResearchMotor vehicle collisionsSocial Vulnerability IndexFatality Analysis Reporting SystemPoisson regressionRelated mortality rateMortality rateAverage annual mortality rateMultivariable Poisson regressionPoisson regression modelsTraffic fatalitiesArea deprivationWalking IndexUnivariate Poisson regressionAnnual mortality rateUS CensusDecile increaseMacroeconomic forcesPoor walkabilityState policy changesInclusion criteriaVehicle collisionsCrash-specific informationTraffic related fatalitiesRegression modelsWalkabilitySame Day Discharge after Metabolic and Bariatric Surgery in Adults 65 Years and Older: An Analysis of the 2015 to 2022 MBSAQIP
Hamid S, Graetz E, Esdaille C, Schneider E, Gibbs K. Same Day Discharge after Metabolic and Bariatric Surgery in Adults 65 Years and Older: An Analysis of the 2015 to 2022 MBSAQIP. Obesity Surgery 2024, 35: 25-32. PMID: 39636520, DOI: 10.1007/s11695-024-07611-9.Peer-Reviewed Original ResearchClavien-Dindo complicationsObesity-associated diseasesPostoperative dayBariatric surgeryPrimary sleeve gastrectomyDay dischargeInsulin-dependent diabetesSame-day dischargePOD1 dischargePostoperative morbiditySleeve gastrectomyPatient selectionSafety profileSafety of SDDPatientsSDD protocolCohort of older adultsPOD1Logistic regressionAge groupsSurgeryComplicationsMBSAQIPOlder adultsReadmissionAnalysis of Online Crowdfunding Among Patients Pursuing Metabolic and Bariatric Surgery in the United States
Hamid S, Graetz E, Bakkila B, Chao G, Zolfaghari E, Schultz K, Chetty A, Trabilsy M, Schneider E, Gibbs K. Analysis of Online Crowdfunding Among Patients Pursuing Metabolic and Bariatric Surgery in the United States. Obesity Surgery 2024, 35: 170-180. PMID: 39633092, DOI: 10.1007/s11695-024-07605-7.Peer-Reviewed Original ResearchBariatric surgeryNon-medical expensesRoux-en-Y gastric bypassNon-surgical attemptsRoux-en-YObesity-associated diseasesSleeve gastrectomyGastric bypassBiliopancreatic diversionDuodenal switchAssessed associationsLogistic regressionSurgeryIQRPatientsMedianDiseaseLost wagesHealth-related diseasesUnmet financial needsNational Patterns of Hospital Admission Versus Home Recovery Following Mastectomy for Breast Cancer
Kim L, Moore M, Schneider E, Canner J, Ayyala H, Chen J, Anant P, Graetz E, Lynch M, Zanieski G, Gillego A, Valero M, Proussaloglou E, Berger E, Golshan M, Greenup R, Park T. National Patterns of Hospital Admission Versus Home Recovery Following Mastectomy for Breast Cancer. Annals Of Surgical Oncology 2024, 31: 9088-9099. PMID: 39322830, DOI: 10.1245/s10434-024-16107-w.Peer-Reviewed Original ResearchHR patientsLymph nodesRate of neoadjuvant chemotherapyHospital admissionNational patterns of careEmergency departmentDecrease wound complicationsNeoadjuvant chemo-Hospital re-admissionNeoadjuvant chemotherapyIn-hospital admissionRate of reconstructionPerioperative outcomesPostoperative hematomaComplication ratePostoperative complicationsWound complicationsHome recoveryPatterns of careBreast cancerMastectomyEmergency room visitsMultivariate analysisComplicationsPatientsWeight Nadir and Long-Term Weight Outcomes After Laparoscopic Sleeve Gastrectomy in a Diverse Cohort of Adolescents and Young Adults
Hornick M, Chao G, Ying L, Nadzam G, Duffy A, Ghiassi S, Graetz E, Gibbs K, Morton J. Weight Nadir and Long-Term Weight Outcomes After Laparoscopic Sleeve Gastrectomy in a Diverse Cohort of Adolescents and Young Adults. Obesity Surgery 2024, 34: 2965-2973. PMID: 38935262, DOI: 10.1007/s11695-024-07374-3.Peer-Reviewed Original ResearchPreoperative weightSleeve gastrectomyWeight nadirWeight outcomesIntroductionLaparoscopic sleeve gastrectomyLaparoscopic sleeve gastrectomyGroup of patientsWeight loss strategiesYoung adultsDiverse group of patientsCohort of adolescentsLongitudinal weight dataBariatric proceduresFollow-upNon-Hispanic blacksLoss strategiesMedical recordsPatientsTWLLSGWeight dataWeight recurrenceDiverse cohortGastrectomyWeight change
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Mobile Phone Number
Mailing Address
Yale School of Medicine
P.O. Box 208062
New Haven, CT 06520
United States