2022
National outcomes following benign cardiac tumor resection: A critical sex‐based disparity
Newell P, Zogg CK, Kusner J, Hirji S, Kerolos M, Kaneko T. National outcomes following benign cardiac tumor resection: A critical sex‐based disparity. Journal Of Cardiac Surgery 2022, 37: 2653-2660. PMID: 35662249, DOI: 10.1111/jocs.16654.Peer-Reviewed Original ResearchMeSH KeywordsComorbidityDatabases, FactualFemaleHeart NeoplasmsHumansMaleMiddle AgedPatient ReadmissionRisk FactorsConceptsComposite morbiditySurgical resectionIndependent predictorsMultivariable analysisVentricular tumorsFemale sexBenign primary cardiac tumorsCardiac tumor resectionLower comorbidity burdenPrimary cardiac tumorsNationwide Readmissions DatabaseMajority of patientsIntra-atrial septumNational outcomesSex-based disparitiesComorbidity burdenCardiac tumorsPrimary outcomeFemale patientsMean ageVentricular septumPrimary diagnosisRight atriumTumor locationTumor resection
2021
Post-traumatic seizures following pediatric traumatic brain injury
Elsamadicy AA, Koo AB, David WB, Lee V, Zogg CK, Kundishora AJ, Hong C, Reeves BC, Sarkozy M, Kahle KT, DiLuna M. Post-traumatic seizures following pediatric traumatic brain injury. Clinical Neurology And Neurosurgery 2021, 203: 106556. PMID: 33636505, DOI: 10.1016/j.clineuro.2021.106556.Peer-Reviewed Original ResearchConceptsLoss of consciousnessTraumatic brain injuryPost-traumatic seizuresSeizure developmentBrain injuryRisk factorsPre-existing medical comorbiditiesPediatric traumatic brain injuryClinical risk factorsDevelopment of seizuresRate of seizuresDecrease healthcare costsEtiology of injuryType of injuryLogistic regression analysisQuality of careHospital complicationsMedical comorbiditiesNeurological complicationsPediatric patientsTBI patientsGreater proportionNinth RevisionSubarachnoid hemorrhageSecondary diagnosis
2020
Risk Factors for the Development of Post-Traumatic Hydrocephalus in Children
Elsamadicy AA, Koo AB, Lee V, David WB, Zogg CK, Kundishora AJ, Hong CS, DeSpenza T, Reeve BC, DiLuna M, Kahle KT. Risk Factors for the Development of Post-Traumatic Hydrocephalus in Children. World Neurosurgery 2020, 141: e105-e111. PMID: 32389871, PMCID: PMC7484270, DOI: 10.1016/j.wneu.2020.04.216.Peer-Reviewed Original ResearchConceptsTraumatic brain injuryRisk factorsBrain injuryNationwide Emergency Department Sample databasePost-traumatic hydrocephalusClinical risk factorsDevelopment of hydrocephalusNeurologic complicationsRespiratory complicationsPediatric patientsHydrocephalus developmentNinth RevisionSubarachnoid hemorrhageEmergency departmentSecondary diagnosisPrimary diagnosisSubdural hemorrhageClinical ModificationInternational ClassificationHydrocephalusHemorrhagePatientsBaseline returnSample databaseAge 6Benchmarking the value of care: Variability in hospital costs for common operations and its association with procedure volume.
Zogg CK, Bernard AC, Hirji SA, Minei JP, Staudenmayer KL, Davis KA. Benchmarking the value of care: Variability in hospital costs for common operations and its association with procedure volume. Journal Of Trauma And Acute Care Surgery 2020, 88: 619-628. PMID: 32039972, PMCID: PMC7802807, DOI: 10.1097/ta.0000000000002611.Peer-Reviewed Original ResearchConceptsLaparoscopic appendectomyLaparoscopic cholecystectomyHospital costsMeans of USMedian costProcedure volumeEmergency general surgeryTotal hospital costsMedian hospital costsNational Inpatient SampleAdults 18 yearsNational cost savingsAnnual procedure volumeValue of careHospital complicationsIndex hospitalHealth care valuePatient characteristicsAdverse outcomesInpatient SampleInclusion criteriaGeneral surgeryHospitalLevel IIICommon operationHospital Variation in Geriatric Surgical Safety for Emergency Operation
Becher RD, Sukumar N, DeWane MP, Stolar MJ, Gill TM, Schuster KM, Maung AA, Zogg CK, Davis KA. Hospital Variation in Geriatric Surgical Safety for Emergency Operation. Journal Of The American College Of Surgeons 2020, 230: 966-973.e10. PMID: 32032720, PMCID: PMC7409563, DOI: 10.1016/j.jamcollsurg.2019.10.018.Peer-Reviewed Original ResearchConceptsStandardized mortality ratioHospital-level characteristicsGeneral surgery operationsGeriatric patientsEmergency operationHospital variationEmergency general surgery operationsMean standardized mortality ratioCalifornia State Inpatient DatabaseHospital-based mortalitySignificant hospital variationPatients 65 yearsSubstantial excess mortalitySurgery operationsState Inpatient DatabasesMixed effects logistic regression modelsCommon general surgery operationsLow-mortality outliersLogistic regression modelsPostoperative mortalityHospital deathOlder patientsInpatient DatabaseMortality outcomesNonelective operations
2019
Debunking the July Effect in Cardiac Surgery: A National Analysis of More Than 470,000 Procedures
Shah RM, Hirji SA, Kiehm S, Goel S, Yazdchi F, Bellavia A, Zogg CK, Pelletier MP, Shekar P, Kaneko T. Debunking the July Effect in Cardiac Surgery: A National Analysis of More Than 470,000 Procedures. The Annals Of Thoracic Surgery 2019, 108: 929-934. PMID: 31353035, DOI: 10.1016/j.athoracsur.2019.06.015.Peer-Reviewed Original ResearchMeSH KeywordsAcademic Medical CentersAdultAgedCardiac Surgical ProceduresClinical CompetenceCohort StudiesDatabases, FactualEducation, Medical, GraduateFemaleHospital MortalityHospitals, TeachingHumansInpatientsInternship and ResidencyMaleMedical Staff, HospitalMiddle AgedPostoperative ComplicationsQuality of Health CareRisk AdjustmentSeasonsUnited StatesConceptsAortic valve replacementCardiac surgeryJuly effectHospital mortalityPatient outcomesTeaching hospitalMajor cardiac surgery proceduresSurgical aortic valve replacementCoronary artery bypassCardiac surgery proceduresNational Inpatient SampleRisk-adjusted mortalityMitral valve repairCardiac surgery outcomesHospital complicationsArtery bypassMV surgeryNoncardiac surgeryValve replacementAdjusted mortalityValve repairSurgery outcomesInpatient SampleWorse outcomesHospital support systemsCoding algorithms for defining Charlson and Elixhauser co-morbidities in Read-coded databases
Metcalfe D, Masters J, Delmestri A, Judge A, Perry D, Zogg C, Gabbe B, Costa M. Coding algorithms for defining Charlson and Elixhauser co-morbidities in Read-coded databases. BMC Medical Research Methodology 2019, 19: 115. PMID: 31170931, PMCID: PMC6554904, DOI: 10.1186/s12874-019-0753-5.Peer-Reviewed Original ResearchConceptsCharlson Comorbidity IndexClinical Practice Research DatalinkElixhauser methodHip fractureLogistic regression modelsRead codesLarge primary care databaseUK primary care practicesPrimary care databasePrimary care practicesComorbidity categoriesComorbidity indexRegression modelsComorbidity measuresCare databaseComorbidity codesMethodsTwo researchersPredictive valueCare practicesControl populationPredictive propertiesReceiver Operating Characteristic (ROC) curveCharacteristic curveComorbiditiesOperating Characteristic curveAssociation of Medicaid Expansion Policy with Outcomes in Homeless Patients Requiring Emergency General Surgery
Manzano‐Nunez R, Zogg CK, Bhulani N, McCarty JC, Herrera‐Escobar J, Lu K, Andriotti T, Uribe‐Leitz T, de Jager E, Jarman MP, Haider AH, Ortega G. Association of Medicaid Expansion Policy with Outcomes in Homeless Patients Requiring Emergency General Surgery. World Journal Of Surgery 2019, 43: 1483-1489. PMID: 30706104, DOI: 10.1007/s00268-019-04932-0.Peer-Reviewed Original ResearchConceptsEmergency general surgeryNon-expansion statesMedical adviceHomeless patientsSurgical complicationsMedicaid expansionHospital chargesGeneral surgeryLower oddsPrimary EGS diagnosesHome healthcareMultivariable logistic regressionExpansion statesLength of stayNon-Medicaid expansion statesState Inpatient DatabasesMedicaid expansion statesMultivariable quantile regressionEGS proceduresClinical eventsEGS diagnosesInpatient DatabaseHomeless individualsHigher oddsNon-significant difference
2018
The Cost of Complications Following Major Resection of Malignant Neoplasia
Zogg CK, Ottesen TD, Kebaish KJ, Galivanche A, Murthy S, Changoor NR, Zogg DL, Pawlik TM, Haider AH. The Cost of Complications Following Major Resection of Malignant Neoplasia. Journal Of Gastrointestinal Surgery 2018, 22: 1976-1986. PMID: 29946953, PMCID: PMC6224301, DOI: 10.1007/s11605-018-3850-6.Peer-Reviewed Original ResearchConceptsIncremental hospital costsHospital costsMalignant neoplasiaMajor resectionResection typePre-discharge complicationsSystem-based complicationsImpact of complicationsComplex surgical patientsCost of complicationsLong-term treatmentMore complex patientsMajor gastrointestinal resectionsProviders/payersValue of carePulmonary complicationsUrinary complicationsComplication groupInfectious complicationsAdult patientsRectal resectionSurgical patientsGastrointestinal resectionGI diseaseSurgical outcomesEthnic disparity in primary cutaneous CD30+ T‐cell lymphoproliferative disorders: an analysis of 1496 cases from the US National Cancer Database
Su C, Nguyen KA, Bai HX, Zogg CK, Cao Y, Karakousis G, Zhang PJ, Zhang G, Xiao R. Ethnic disparity in primary cutaneous CD30+ T‐cell lymphoproliferative disorders: an analysis of 1496 cases from the US National Cancer Database. British Journal Of Haematology 2018, 181: 752-759. PMID: 29676444, DOI: 10.1111/bjh.15222.Peer-Reviewed Original ResearchMeSH KeywordsAdultAge FactorsAgedDatabases, FactualDisease-Free SurvivalFemaleFollow-Up StudiesHead and Neck NeoplasmsHumansKi-1 AntigenLymphoproliferative DisordersMaleMiddle AgedNeoplasm ProteinsRetrospective StudiesSex FactorsSkin NeoplasmsSocioeconomic FactorsSurvival RateT-LymphocytesUnited StatesConceptsT-cell lymphoproliferative disorderUS National Cancer DatabaseNational Cancer DatabasePrimary cutaneous CD30Overall survivalShorter overall survivalCutaneous CD30AA patientsLymphoproliferative disordersDisease characteristicsCancer DatabaseCutaneous T-cell lymphoma casesCox proportional hazards regression analysisPrimary cutaneous T-cell lymphomaEthnic disparitiesHigher Charlson-Deyo scoreProportional hazards regression analysisCutaneous T-cell lymphomaT-cell lymphoma casesCharlson-Deyo scorePrimary disease siteReceipt of chemotherapyHazards regression analysisSmall retrospective studiesHigher clinical stageThe Epidemiology of Pediatric Head Injury Treated Outside of Hospital Emergency Departments
Zogg CK, Haring RS, Xu L, Canner JK, AlSulaim HA, Hashmi ZG, Salim A, Engineer LD, Haider AH, Bell JM, Schneider EB. The Epidemiology of Pediatric Head Injury Treated Outside of Hospital Emergency Departments. Epidemiology 2018, 29: 269-279. PMID: 29240568, PMCID: PMC5937022, DOI: 10.1097/ede.0000000000000791.Peer-Reviewed Original ResearchConceptsInjury-specific factorsPediatric patientsEmergency departmentOutpatient settingHead traumaAmbulatory care useEmergency department visitsEmergency department carePediatric head injuryTrauma-related deathsHospital emergency departmentHead trauma casesMarketScan MedicaidNationwide burdenOutpatient injuriesIndex visitDepartment visitsOutpatient burdenHead injuryCare useOutpatient careIncidence rateOutpatient casesTrauma casesCommercial ClaimsThe “mortality ascent”
Herrera-Escobar JP, Rios-Diaz AJ, Zogg CK, Wolf LL, Harlow A, Schneider EB, Cooper Z, Ordonez CA, Salim A, Haider AH. The “mortality ascent”. Journal Of Trauma And Acute Care Surgery 2018, 84: 139-145. PMID: 28930947, DOI: 10.1097/ta.0000000000001706.Peer-Reviewed Original ResearchConceptsUnstable trauma patientsLevel I TCsLevel II TCsHours postadmissionTrauma patientsLevel ILevel IIMortality riskHospital mortalityLog-binomial regression modelsNational Trauma Data BankComparable mortality riskHospital-level confoundersInjury Severity ScoreSystolic blood pressureAvailable treatment modalitiesTrauma Data BankSpecific risk factorsRisk-adjusted modelsBlood pressureHigher relative mortalityUnstable patientsBurn patientsSeverity scoreTreatment modalities
2017
The Association Between Medicare Eligibility and Gains in Access to Rehabilitative Care
Zogg CK, Scott JW, Metcalfe D, Seshadri AJ, Tsai TC, Davis WA, Rose JA, Olufajo OA, Zafar SN, Salim A, Haider AH. The Association Between Medicare Eligibility and Gains in Access to Rehabilitative Care. Annals Of Surgery 2017, 265: 734-742. PMID: 28267694, DOI: 10.1097/sla.0000000000001754.Peer-Reviewed Original ResearchMeSH KeywordsAdultAge FactorsAgedDatabases, FactualEligibility DeterminationFemaleHealth Care CostsHumansIncidenceInjury Severity ScoreInsurance CoverageMaleMedicareMiddle AgedNeeds AssessmentOutcome Assessment, Health CarePatient DischargePostoperative CareRehabilitation CentersRetrospective StudiesRisk AssessmentUnited StatesWounds and InjuriesConceptsSkilled nursing facilitiesAge 64Insurance statusNational Trauma Data BankMedicare eligibilityPost-discharge rehabilitationInsurance coverageAge 65 yearsTrauma Data BankLength of staySevere clinical presentationAcute inpatient facilitiesHealth policy changesTrauma patientsClinical presentationSimilar patientsDiagnosis codesStratified subgroupsInpatient careRehabilitative careTrauma systemAge 54SNF useInpatient facilitiesNursing facilities
2016
Race-based differences in duration of stay among universally insured coronary artery bypass graft patients in military versus civilian hospitals
Chowdhury R, Davis WA, Chaudhary MA, Jiang W, Zogg CK, Schoenfeld AJ, Jaklitsch MT, Kaneko T, Learn PA, Haider AH, Schneider EB. Race-based differences in duration of stay among universally insured coronary artery bypass graft patients in military versus civilian hospitals. Surgery 2016, 161: 1090-1099. PMID: 27932028, DOI: 10.1016/j.surg.2016.10.022.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedBlack or African AmericanCohort StudiesConfidence IntervalsCoronary Artery BypassCoronary Artery DiseaseDatabases, FactualFemaleHealthcare DisparitiesHospital MortalityHospitals, MilitaryHospitals, PublicHumansLength of StayMaleMiddle AgedPrognosisRegression AnalysisRisk AssessmentSurvival AnalysisTreatment OutcomeUnited StatesUniversal Health InsuranceWhite PeopleConceptsCoronary artery bypass graftArtery bypass graftCoronary artery bypass graft patientsDuration of stayBypass graft patientsBypass graftRace-based differencesGraft patientsBlack patientsMilitary HospitalCivilian hospitalsHospital-level factorsEligible patientsWhite patientsMale patientsCivilian facilitiesWhite racePatientsStayTRICARE coverageNegative binomial regressionHospitalApparent mitigationGraftGreater durationInsurance status is associated with complex presentation among emergency general surgery patients
Scott JW, Havens JM, Wolf LL, Zogg CK, Rose JA, Salim A, Haider AH. Insurance status is associated with complex presentation among emergency general surgery patients. Surgery 2016, 161: 320-328. PMID: 27712875, DOI: 10.1016/j.surg.2016.08.038.Peer-Reviewed Original ResearchMeSH KeywordsAdultDatabases, FactualEmergency Service, HospitalEmergency TreatmentFemaleGeneral SurgeryHealth Services AccessibilityHumansInsurance CoverageLogistic ModelsMaleMedically UninsuredMiddle AgedOdds RatioOutcome Assessment, Health CarePatient Protection and Affordable Care ActPatient SafetyRetrospective StudiesRisk AssessmentSocioeconomic FactorsUnited StatesYoung AdultConceptsInsurance statusComplex presentationSurgical presentationUninsured patientsEmergency general surgical careEmergency general surgical conditionsEmergency general surgical patientsEmergency general surgery patientsNational Emergency Department SampleHospital-level covariatesOverall uninsured rateUninsured payer statusGeneral surgery patientsGeneral surgical patientsGeneral surgical conditionsIntra-abdominal abscessMultivariable logistic regressionEmergency Department SampleDisease-specific measuresSeverity of diseaseLack of insuranceGeneral surgical careIntestinal gangreneBowel obstructionGeneralized peritonitisPredictors of emergency ventral hernia repair: Targets to improve patient access and guide patient selection for elective repair
Wolf LL, Scott JW, Zogg CK, Havens JM, Schneider EB, Smink DS, Salim A, Haider AH. Predictors of emergency ventral hernia repair: Targets to improve patient access and guide patient selection for elective repair. Surgery 2016, 160: 1379-1391. PMID: 27542434, DOI: 10.1016/j.surg.2016.06.027.Peer-Reviewed Original ResearchMeSH KeywordsAdultAge FactorsAgedAged, 80 and overConfidence IntervalsDatabases, FactualElective Surgical ProceduresEmergenciesFemaleFollow-Up StudiesHealth Services AccessibilityHernia, VentralHerniorrhaphyHospital MortalityHumansInsurance CoverageLogistic ModelsMaleMiddle AgedOdds RatioPatient SelectionPredictive Value of TestsQuality ImprovementRetrospective StudiesRisk AssessmentSeverity of Illness IndexSex FactorsTime FactorsTreatment OutcomeConceptsVentral hernia repairEmergency ventral hernia repairHospital-level factorsHernia repairIndependent predictorsPatient selectionElective operationsWorse outcomesEmergency repairLonger hospital stayNationwide Inpatient SampleMultivariable logistic regressionUnited States populationRace/ethnicityHospital deathHospital staySecondary outcomesElective repairPrimary outcomePayer statusInpatient SamplePatient outcomesVentral herniasElective careGreater oddsNever giving up: outcomes and presentation of emergency general surgery in geriatric octogenarian and nonagenarian patients
Shah AA, Zafar SN, Kodadek LM, Zogg CK, Chapital AB, Iqbal A, Greene WR, Cornwell EE, Havens J, Nitzschke S, Cooper Z, Salim A, Haider AH. Never giving up: outcomes and presentation of emergency general surgery in geriatric octogenarian and nonagenarian patients. The American Journal Of Surgery 2016, 212: 211-220.e3. PMID: 27086200, DOI: 10.1016/j.amjsurg.2016.01.021.Peer-Reviewed Original ResearchConceptsLength of stayNonagenarian patientsYoung adultsUtilization Project Nationwide Inpatient SampleLower total hospital costsEmergency general surgery patientsShorter LOSLower risk-adjusted oddsOlder adultsPrimary EGS diagnosesEmergency general surgeryGeneral surgery patientsRisk-adjusted oddsTotal hospital costsHigher mortality riskRisk-adjusted differencesGastrostomy careMajor morbidityOlder patientsSurgery patientsEGS diagnosesInpatient SampleHospital costsHigher oddsGeneral surgeryAccess to post-discharge inpatient care after lower limb trauma
Metcalfe D, Davis WA, Olufajo OA, Rios-Diaz AJ, Chaudhary MA, Harris MB, Zogg CK, Weaver MJ, Salim A. Access to post-discharge inpatient care after lower limb trauma. Journal Of Surgical Research 2016, 203: 140-144. PMID: 27338544, DOI: 10.1016/j.jss.2016.02.036.Peer-Reviewed Original ResearchConceptsLength of stayHospital LOSLower limb traumaLimb traumaInsurance statusUninsured patientsInpatient careLonger hospital LOSCalifornia State Inpatient DatabaseState Inpatient DatabasesLower limb injuriesNon-acute servicesAcute hospitalizationHospital dischargeInpatient DatabaseHospital characteristicsTrauma bedsClinical ModificationLimb injuriesObservational studyLower oddsEmergency careInternational ClassificationPatientsPrivate insurance“Halo effect” in trauma centers: does it extend to emergent colectomy?
Nagarajan N, Selvarajah S, Gani F, Alshaikh HN, Giuliano K, Zogg CK, Schneider EB, Haider AH. “Halo effect” in trauma centers: does it extend to emergent colectomy? Journal Of Surgical Research 2016, 203: 231-237. PMID: 27125867, DOI: 10.1016/j.jss.2016.01.037.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAged, 80 and overColectomyDatabases, FactualDiverticulitis, ColonicEmergenciesFemaleHospital ChargesHospital MortalityHumansLength of StayLinear ModelsLogistic ModelsMaleMiddle AgedPoisson DistributionQuality Assurance, Health CareQuality Indicators, Health CareTrauma CentersTreatment OutcomeUnited StatesYoung AdultConceptsLength of stayNontrauma centersHospital-level characteristicsTrauma centerEmergent colectomyEmergency general surgery conditionsEmergency general surgery proceduresNationwide Emergency Department SampleEmergency surgical interventionOdds of mortalityEmergency Department SampleGeneral surgery proceduresNontrauma conditionsHospital mortalityMedian ageSurgical interventionSurgical conditionsImproved outcomesSex distributionSurgical careMedian chargePatientsSurgery proceduresSurgery conditionsCase mix
2015
Morbidity or mortality? Variations in trauma centres in the rescue of older injured patients
Zafar SN, Shah AA, Zogg CK, Hashmi ZG, Greene WR, Haut ER, Cornwell EE, Haider AH. Morbidity or mortality? Variations in trauma centres in the rescue of older injured patients. Injury 2015, 47: 1091-1097. PMID: 26724172, DOI: 10.1016/j.injury.2015.11.044.Peer-Reviewed Original ResearchMeSH KeywordsAcute Kidney InjuryAgedAged, 80 and overComorbidityDatabases, FactualFailure to Rescue, Health CareFemaleGeriatric AssessmentHospital MortalityHumansInjury Severity ScoreLength of StayMaleMedicaidPneumoniaPostoperative ComplicationsRespiratory Distress SyndromeRisk AssessmentTrauma CentersUnited StatesWounds and InjuriesConceptsOlder trauma patientsMajor complicationsTrauma centerOld traumaRisk-adjusted ratesOlder patientsTrauma patientsNational Trauma Data BankFacility-level covariatesRisk-adjusted incidenceTrauma Data BankProcess of careType of injuryLogistic regression analysisPatient demographicsGeriatric traumaComorbid conditionsGeriatric patientsHigher proportionSerious complicationsInclusion criteriaInjury severityPatientsRescue ratesVital signs