2022
Beyond In-hospital Mortality
Zogg CK, Cooper Z, Peduzzi P, Falvey JR, Tinetti ME, Lichtman JH. Beyond In-hospital Mortality. Annals Of Surgery 2022, 278: e314-e330. PMID: 36111845, PMCID: PMC10014495, DOI: 10.1097/sla.0000000000005707.Peer-Reviewed Original ResearchConceptsOlder trauma patientsHospital mortalityOlder adultsTrauma patientsHealthy daysSevere traumatic brain injuryAdult trauma careCause of deathUnique health needsTraumatic brain injuryLoss of independenceIndex admissionHip fracturePrimary diagnosisBrain injuryTrauma careTraumatic injuryMedicare claimsHealth needsMortalityAverage numberReadmissionAdultsPatientsQuintile ranks
2021
In defense of Direct Care: Limiting access to military hospitals could worsen quality and safety
Zogg CK, Lichtman JH, Dalton MK, Learn PA, Schoenfeld AJ, Koehlmoos T, Weissman JS, Cooper Z. In defense of Direct Care: Limiting access to military hospitals could worsen quality and safety. Health Services Research 2021, 57: 723-733. PMID: 34608642, PMCID: PMC9264466, DOI: 10.1111/1475-6773.13885.Peer-Reviewed Original ResearchConceptsMilitary treatment facilitiesMHS beneficiariesMilitary Health SystemCivilian hospitalsMHS patientsDirect carePatient safetyHealth care reformUS Military Health SystemNationwide Readmissions DatabasePatient safety indicatorsHealth policy planningInpatient Quality IndicatorsLocal civilian hospitalsCare reformEvidence-based evaluationHospital mortalityHospital morbidityAdult patientsAdverse eventsRetrospective cohortAdult admissionsNational inpatientInpatient claimsWorse outcomes
2020
Chest Trauma Outcomes: Public Versus Private Level I Trauma Centers
Orlas CP, Herrera‐Escobar J, Zogg CK, Serna JJ, Meléndez JJ, Gómez A, Martínez D, Parra MW, García AF, Rosso F, Pino LF, Gonzalez A, Ordoñez CA. Chest Trauma Outcomes: Public Versus Private Level I Trauma Centers. World Journal Of Surgery 2020, 44: 1824-1834. PMID: 31993723, PMCID: PMC7380545, DOI: 10.1007/s00268-020-05400-w.Peer-Reviewed Original ResearchConceptsTrauma centerMedian Injury Severity ScoreLogistic regressionInjury Severity ScorePost-operative complicationsMultivariable logistic regressionRetained hemothoraxHospital mortalityChest traumaClinical characteristicsMedian ageClinical outcomesThoracic traumaUnstable hemodynamicsEmergency roomSeverity scoreHigher oddsLevel IPatientsTraumaSignificant differencesMortalityHemothoraxMediastinitisEmpyemaThirty-Day Nonindex Readmissions and Clinical Outcomes After Cardiac Surgery
Hirji SA, Percy ED, Zogg CK, Vaduganathan M, Kiehm S, Pelletier M, Kaneko T. Thirty-Day Nonindex Readmissions and Clinical Outcomes After Cardiac Surgery. The Annals Of Thoracic Surgery 2020, 110: 484-491. PMID: 31972128, PMCID: PMC7382395, DOI: 10.1016/j.athoracsur.2019.11.042.Peer-Reviewed Original ResearchConceptsSurgical aortic valve replacementNonindex readmissionsCardiac surgeryNonindex hospitalNonindex hospital readmissionsCoronary artery bypassNational Readmission DatabaseAortic valve replacementCardiac surgery patientsMajor cardiac surgeryPatient risk profileHigh-volume centersUS adult patientsRegionalization of careFragmentation of careComorbidity burdenHospital mortalityIndex readmissionArtery bypassInitial hospitalizationAdult patientsSurgery patientsValve replacementHospital readmissionIndependent predictors
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 systems
2018
The “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
Differences in rural and urban outcomes: a national inspection of emergency general surgery patients
Chaudhary MA, Shah AA, Zogg CK, Changoor N, Chao G, Nitzschke S, Havens JM, Haider AH. Differences in rural and urban outcomes: a national inspection of emergency general surgery patients. Journal Of Surgical Research 2017, 218: 277-284. PMID: 28985861, DOI: 10.1016/j.jss.2017.06.034.Peer-Reviewed Original ResearchConceptsLength of stayRural patientsEGS conditionsUrban hospitalOverall oddsEmergency general surgery conditionsEmergency general surgery patientsShorter LOSGeneral surgery patientsPatient-level factorsLimited clinical importanceNational Inpatient SampleSurgery of TraumaRegionalization of careCost of careMultivariable regression modelsUnited States populationHospital mortalityEGS patientsSurgery patientsUrban patientsAdult patientsMajor complicationsPrimary diagnosisInpatient SampleComparison of Epidemiology of the Injuries and Outcomes in Two First‐Level Trauma Centers in Colombia Using the Pan‐American Trauma Registry System
Ramachandran A, Ranjit A, Zogg CK, Herrera‐Escobar J, Appelson JR, Pino LF, Aboutanous MB, Haider AH, Ordonez CA. Comparison of Epidemiology of the Injuries and Outcomes in Two First‐Level Trauma Centers in Colombia Using the Pan‐American Trauma Registry System. World Journal Of Surgery 2017, 41: 2224-2230. PMID: 28417184, DOI: 10.1007/s00268-017-4013-8.Peer-Reviewed Original ResearchConceptsTrauma centerMortality outcomesRisk-adjusted logistic regression analysesTertiary care trauma centerPropensity scoreHospital Universitario del ValleMultivariable logistic regression modelLevel trauma centerTrauma-related mortalityPresence of hypotensionTrauma Registry SystemComparable mean ageMechanism of injuryOdds of deathComparison of EpidemiologyLogistic regression analysisLogistic regression modelsHospital mortalityPatient demographicsGCS scoreTrauma registryInjury epidemiologyMean ageInsurance statusInsurance type
2016
Use of National Burden to Define Operative Emergency General Surgery
Scott JW, Olufajo OA, Brat GA, Rose JA, Zogg CK, Haider AH, Salim A, Havens JM. Use of National Burden to Define Operative Emergency General Surgery. JAMA Surgery 2016, 151: e160480-e160480. PMID: 27120712, DOI: 10.1001/jamasurg.2016.0480.Peer-Reviewed Original ResearchConceptsEmergency general surgeryEGS proceduresInpatient costsNational burdenGeneral surgeryClinical Modification procedure codesPrimary EGS diagnosesDay of admissionOverall mortality ratePeptic ulcer diseaseSmall bowel resectionNational Inpatient SampleNational quality benchmarksHospital mortalityMost admissionsSurgical admissionsSurgical mortalityComplication burdenComplication rateMajor complicationsPartial colectomyRetrospective reviewUlcer diseaseEGS diagnosesNinth RevisionHospital case volume and outcomes for proximal femoral fractures in the USA: an observational study
Metcalfe D, Salim A, Olufajo O, Gabbe B, Zogg C, Harris MB, Perry DC, Costa ML. Hospital case volume and outcomes for proximal femoral fractures in the USA: an observational study. BMJ Open 2016, 6: e010743. PMID: 27056592, PMCID: PMC4838676, DOI: 10.1136/bmjopen-2015-010743.Peer-Reviewed Original ResearchConceptsHigh-volume hospitalsHip fractureObservational studyIsolated hip fractureRate of pneumoniaHip fracture careHospital case volumeLow-volume hospitalsProximal femoral fracturesLength of stayPatient safety imperativeHospital mortalityVenous thromboembolismSecondary outcomesFracture careClinical outcomesFemoral fracturesAcute hospitalsPatient outcomesInclusion criteriaPressure ulcersCase volumeHospitalOlder adultsOutcomesEvaluation of the Perceived Association Between Resident Turnover and the Outcomes of Patients Who Undergo Emergency General Surgery: Questioning the July Phenomenon
Shah AA, Zogg CK, Nitzschke SL, Changoor NR, Havens JM, Salim A, Cooper Z, Haider AH. Evaluation of the Perceived Association Between Resident Turnover and the Outcomes of Patients Who Undergo Emergency General Surgery: Questioning the July Phenomenon. JAMA Surgery 2016, 151: 1-8. PMID: 26536282, DOI: 10.1001/jamasurg.2015.3940.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAged, 80 and overEducation, Medical, GraduateEmergenciesFemaleGeneral SurgeryHospital MortalityHospitals, TeachingHumansLength of StayMaleMiddle AgedOutcome Assessment, Health CarePersonnel TurnoverPropensity ScoreRetrospective StudiesSeasonsUnited StatesWorkforceYoung AdultConceptsEmergency general surgeryTotal hospital costsLength of stayJuly phenomenonEGS patientsEGS conditionsHospital costsTeaching hospitalGeneral surgeryLower risk-adjusted oddsOutcomes of patientsRisk-adjusted oddsNationwide Inpatient SampleSurgery of TraumaHospital mortalityAdult patientsEarly patientsPoor outcomeInpatient SamplePrincipal diagnosisRetrospective analysisMAIN OUTCOMEMultivariable regressionPatientsPropensity score“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
Emergency general surgery in a low-middle income health care setting: Determinants of outcomes
Shah AA, Latif A, Zogg CK, Zafar SN, Riviello R, Halim MS, Rehman Z, Haider AH, Zafar H. Emergency general surgery in a low-middle income health care setting: Determinants of outcomes. Surgery 2015, 159: 641-649. PMID: 26361098, DOI: 10.1016/j.surg.2015.08.004.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAged, 80 and overDeveloping CountriesEmergenciesFemaleGeneral SurgeryHospital MortalityHospitals, TeachingHumansLogistic ModelsMaleMiddle AgedMultivariate AnalysisOutcome Assessment, Health CarePakistanPostoperative ComplicationsSurgical Procedures, OperativeYoung AdultConceptsEmergency general surgeryHealth care settingsEGS conditionsCare settingsGeneral surgeryNeed of resuscitationPrimary International ClassificationClinical Modification diagnosisCase-mix factorsSoft tissue disordersUniversity Teaching HospitalDeterminants of outcomeSurgery of TraumaRate of deathHigh-income settingsAmerican AssociationHospital mortalityIndependent predictorsMale preponderanceMultivariable analysisBiliary diseaseColorectal diseaseOperative careDisease spectrumTeaching hospitalNational estimates of predictors of outcomes for emergency general surgery
Shah AA, Haider AH, Zogg CK, Schwartz DA, Haut ER, Zafar SN, Schneider EB, Velopulos CG, Shafi S, Zafar H, Efron DT. National estimates of predictors of outcomes for emergency general surgery. Journal Of Trauma And Acute Care Surgery 2015, 78: 482-491. PMID: 25710417, DOI: 10.1097/ta.0000000000000555.Peer-Reviewed Original ResearchConceptsEmergency general surgeryEGS patientsMajor complicationsGeneral surgeryMultivariate logistic regression analysisOverall complication ratePredictors of mortalityClinical Modification codesOverall mortality rateNationwide Inpatient SampleSeparate multivariate logistic regression analysesSurgery of TraumaDRG International ClassificationLogistic regression analysisHighest income quartileHospital complicationsHospital mortalityComplication ratePatient demographicsSurgical complicationsIndependent predictorsPrimary outcomeEGS conditionsMean ageInpatient Sample