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 ranksNational 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
Reassessing the July Effect: 30 Years of Evidence Show No Difference in Outcomes
Zogg CK, Metcalfe D, Sokas CM, Dalton MK, Hirji SA, Davis KA, Haider AH, Cooper Z, Lichtman JH. Reassessing the July Effect: 30 Years of Evidence Show No Difference in Outcomes. Annals Of Surgery 2021, 277: e204-e211. PMID: 33914485, PMCID: PMC8384940, DOI: 10.1097/sla.0000000000004805.Peer-Reviewed Original ResearchMeSH KeywordsCoronary Artery BypassHospitalizationHumansIschemic StrokeMyocardial InfarctionPatient ReadmissionRetrospective StudiesRisk FactorsConceptsJuly effectMajor morbidityPatient outcomesMajor adverse outcomesNationwide Readmissions DatabaseAdverse patient outcomesSystem-level factorsUS patientsAdverse outcomesSurgical conditionsInclusion criteriaPaucity of studiesReadmissionPatient encountersSystematic reviewMorbidityOutcomesNegative resultsMortalityYears of evidenceTotalYearsEvidencePatientsAdmission
2020
Thirty- and 90-day Readmissions After Spinal Surgery for Spine Metastases
Elsamadicy AA, Koo AB, David WB, Zogg CK, Kundishora AJ, Hong CS, Kuzmik GA, Gorrepati R, Coutinho PO, Kolb L, Laurans M, Abbed K. Thirty- and 90-day Readmissions After Spinal Surgery for Spine Metastases. Spine 2020, 46: 828-835. PMID: 33394977, PMCID: PMC8278805, DOI: 10.1097/brs.0000000000003907.Peer-Reviewed Original ResearchMeSH KeywordsHumansNeurosurgical ProceduresPatient ReadmissionPostoperative ComplicationsRetrospective StudiesSpineConceptsSpine metastasesGenitourinary complicationsPostoperative infectionSpine surgeryRheumatoid arthritis/collagen vascular diseasesAcute post-hemorrhagic anemiaCollagen vascular diseaseRetrospective cohort studyUnplanned hospital readmissionNationwide Readmissions DatabasePatient-level factorsVulnerable patient groupSurgical treatment interventionMultivariate regression analysisFusion spine surgeryInpatient complicationsFrequent readmissionsUnplanned readmissionCohort studyRenal failureClinical factorsHospital readmissionSurgery typePatient groupVascular diseaseThe utility of the nationwide readmissions database in understanding contemporary transcatheter aortic valve replacement outcomes
Hirji S, Zogg CK, Kaneko T. The utility of the nationwide readmissions database in understanding contemporary transcatheter aortic valve replacement outcomes. European Heart Journal 2020, 41: 4358-4359. PMID: 32678898, DOI: 10.1093/eurheartj/ehaa581.Peer-Reviewed Original ResearchComparison of in-hospital outcomes and readmissions for valve-in-valve transcatheter aortic valve replacement vs. reoperative surgical aortic valve replacement: a contemporary assessment of real-world outcomes
Hirji SA, Percy ED, Zogg CK, Malarczyk A, Harloff MT, Yazdchi F, Kaneko T. Comparison of in-hospital outcomes and readmissions for valve-in-valve transcatheter aortic valve replacement vs. reoperative surgical aortic valve replacement: a contemporary assessment of real-world outcomes. European Heart Journal 2020, 41: 2747-2755. PMID: 32445575, PMCID: PMC7395321, DOI: 10.1093/eurheartj/ehaa252.Peer-Reviewed Original ResearchConceptsAortic valve replacement patientsDegenerated bioprosthetic aortic valvesValve replacement patientsBioprosthetic aortic valveVIV-TAVRMajor bleedingReplacement patientsAortic valveSurgical aortic valve replacement patientsTranscatheter aortic valve replacement patientsValve transcatheter aortic valve replacementTranscatheter aortic valve replacementIntermediate-risk patientsNational Readmission DatabaseRoutine home dischargeVIV-TAVR patientsAortic valve replacementHigh-risk patientsThirty-day outcomesSignificant risk factorsUS adult patientsLong-term efficacyReal-world outcomesValve TAVRHospital outcomesQuantifying the Impact of Care Fragmentation on Outcomes After Transcatheter Aortic Valve Implantation
Hirji SA, Zogg CK, Vaduganathan M, Kiehm S, Percy ED, Yazdchi F, Pelletier M, Shah PB, Bhatt DL, O'Gara P, Kaneko T. Quantifying the Impact of Care Fragmentation on Outcomes After Transcatheter Aortic Valve Implantation. The American Journal Of Cardiology 2020, 128: 113-119. PMID: 32650903, DOI: 10.1016/j.amjcard.2020.05.005.Peer-Reviewed Original ResearchMeSH KeywordsAgedAged, 80 and overCardiac CatheterizationCenters for Medicare and Medicaid Services, U.S.ComorbidityContinuity of Patient CareCoronary AngiographyDiabetes MellitusFemaleHospital CostsHospital MortalityHospitalsHumansHypertensionLength of StayLung DiseasesMaleMultivariate AnalysisPacemaker, ArtificialPatient ReadmissionPericardiocentesisPostoperative ComplicationsProsthesis ImplantationStrokeTranscatheter Aortic Valve ReplacementUnited StatesConceptsNonindex hospitalNonindex readmissionsCare fragmentationTranscatheter aortic valve implantation outcomesTranscatheter aortic valve implantationHigher co-morbidity burdenNational Readmission DatabaseAortic valve implantationCo-morbidity burdenTotal hospital costsMajor cardiac proceduresUS adult patientsFuture health policyValue of careIndex readmissionTAVI patientsCause mortalityIndex hospitalNoncardiac causesAdult patientsPatient characteristicsReadmission ratesValve implantationReadmission lengthCardiac proceduresThirty- and 90-Day Readmissions After Treatment of Traumatic Subdural Hematoma: National Trend Analysis
Koo AB, Elsamadicy AA, David WB, Zogg CK, Santarosa C, Sujijantarat N, Robert SM, Kundishora AJ, Cord BJ, Hebert R, Bahrassa F, Malhotra A, Matouk CC. Thirty- and 90-Day Readmissions After Treatment of Traumatic Subdural Hematoma: National Trend Analysis. World Neurosurgery 2020, 139: e212-e219. PMID: 32272271, PMCID: PMC7380544, DOI: 10.1016/j.wneu.2020.03.168.Peer-Reviewed Original ResearchConceptsTraumatic subdural hematomaSubdural hematomaRheumatoid arthritis/collagen vascular diseasesMultivariate logistic regression analysisCollagen vascular diseaseNationwide Readmissions DatabaseCongestive heart failureLikelihood of readmissionPrimary procedure codeTraumatic brain injuryLogistic regression analysisReadmission ratesRenal failureHeart failurePostoperative infectionNinth RevisionSurgical interventionPatient populationVascular diseaseCerebral meningesBrain injuryClinical ModificationPatient managementReadmissionInternational ClassificationThirty-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
Accounting for Disparities in the Evaluation of Medicare Alternative Payment Plans
Zogg CK, Ortega G, Haider AH. Accounting for Disparities in the Evaluation of Medicare Alternative Payment Plans. JAMA Surgery 2019, 154: 400-401. PMID: 30649137, DOI: 10.1001/jamasurg.2018.5243.Peer-Reviewed Original ResearchChanges in Discharge to Rehabilitation: Potential Unintended Consequences of Medicare Total Hip Arthroplasty/Total Knee Arthroplasty Bundled Payments, Should They Be Implemented on a Nationwide Scale?
Zogg CK, Falvey JR, Dimick JB, Haider AH, Davis KA, Grauer JN. Changes in Discharge to Rehabilitation: Potential Unintended Consequences of Medicare Total Hip Arthroplasty/Total Knee Arthroplasty Bundled Payments, Should They Be Implemented on a Nationwide Scale? The Journal Of Arthroplasty 2019, 34: 1058-1065.e4. PMID: 30878508, PMCID: PMC6884960, DOI: 10.1016/j.arth.2019.01.068.Peer-Reviewed Original ResearchMeSH KeywordsAgedArthroplasty, Replacement, HipArthroplasty, Replacement, KneeComputer SimulationDecision TreesElective Surgical ProceduresHumansMedicareMiddle AgedMonte Carlo MethodPatient DischargePatient Protection and Affordable Care ActPatient ReadmissionQuality of LifeRehabilitationReimbursement MechanismsSkilled Nursing FacilitiesUnited StatesConceptsExtent of therapyHealth-related qualityType of rehabilitationFunctional recoveryPatients' health-related qualitySkilled nursing facility useElective total hipPrimary TKA patientsOutcomes of patientsPatient-centered outcomesPatients' functional recoveryInpatient rehabilitation facilityNursing facility useEpisode of careAverage functional outcomeBundled payment programsDischarge dispositionTKA patientsUnplanned readmissionTotal hipFunctional outcomeAffordable Care ActOutcome measuresRehabilitation facilityBundled Payments
2018
Three Common Methodological Issues in Studies of Surgical Readmission Rates: The Trouble With Readmissions
Zogg CK, Pawlik TM, Haider AH. Three Common Methodological Issues in Studies of Surgical Readmission Rates: The Trouble With Readmissions. JAMA Surgery 2018, 153: 1074-1076. PMID: 30193351, DOI: 10.1001/jamasurg.2018.2488.Peer-Reviewed Original ResearchRacial/Ethnic Disparities in Longer-term Outcomes Among Emergency General Surgery Patients
Zogg CK, Jiang W, Ottesen TD, Shafi S, Schuster K, Becher R, Davis KA, Haider AH. Racial/Ethnic Disparities in Longer-term Outcomes Among Emergency General Surgery Patients. Annals Of Surgery 2018, 268: 968-979. PMID: 28742704, PMCID: PMC5783796, DOI: 10.1097/sla.0000000000002449.Peer-Reviewed Original ResearchConceptsEmergency general surgery patientsNon-Hispanic whitesGeneral surgery patientsLong-term outcomesNon-Hispanic blacksNon-Hispanic AsiansMinority patientsMajor morbidityUnplanned readmissionSurgery patientsOlder adultsRisk-adjusted Cox proportional hazards modelsEthnic disparitiesCox proportional hazards modelDiagnostic categoriesRacial/Ethnic DisparitiesUS population agesProportional hazards modelNHB patientsNonagenarian patientsNHW patientsBACKGROUND DATAHospital's percentageMortality differencesMedicare dataDialysis is an independent risk factor for perioperative adverse events, readmission, reoperation, and mortality for patients undergoing elective spine surgery
Ottesen TD, McLynn RP, Zogg CK, Shultz BN, Ondeck NT, Bovonratwet P, Bellamkonda KS, Rubin LE, Grauer JN. Dialysis is an independent risk factor for perioperative adverse events, readmission, reoperation, and mortality for patients undergoing elective spine surgery. The Spine Journal 2018, 18: 2033-2042. PMID: 30077772, DOI: 10.1016/j.spinee.2018.04.007.Peer-Reviewed Original ResearchConceptsElective spine surgeryNon-dialysis patientsDialysis-dependent patientsPerioperative adverse eventsAdverse eventsDialysis patientsSpine surgeryUnplanned readmissionCohort studyPatient demographicsRisk factorsNational Surgical Quality Improvement Program databaseRisk-adjusted multivariate regressionsQuality Improvement Program databaseOperating roomDialysis-independent patientsInstitutional cohort studyMinor adverse eventsRetrospective cohort studyElective spinal surgeryImprovement Program databaseIndependent risk factorMajor adverse eventsPercentage of complicationsAdministrative database studyDialysis Patients Undergoing Total Knee Arthroplasty Have Significantly Increased Odds of Perioperative Adverse Events Independent of Demographic and Comorbidity Factors
Ottesen TD, Zogg CK, Haynes MS, Malpani R, Bellamkonda KS, Grauer JN. Dialysis Patients Undergoing Total Knee Arthroplasty Have Significantly Increased Odds of Perioperative Adverse Events Independent of Demographic and Comorbidity Factors. The Journal Of Arthroplasty 2018, 33: 2827-2834. PMID: 29754981, DOI: 10.1016/j.arth.2018.04.012.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedAged, 80 and overArthroplasty, Replacement, KneeComorbidityElective Surgical ProceduresFemaleHumansInpatientsLogistic ModelsMaleMiddle AgedMultivariate AnalysisOdds RatioPatient DischargePatient ReadmissionPostoperative ComplicationsQuality ImprovementRegression AnalysisRenal DialysisReoperationRetrospective StudiesRisk AssessmentConceptsTotal knee arthroplastyDialysis-dependent patientsAdverse eventsPatient demographicsDialysis patientsAdverse outcomesKnee arthroplastyNational Surgical Quality Improvement Program databaseOverall healthRisk-adjusted logistic regressionElective total knee arthroplastyQuality Improvement Program databaseImprovement Program databaseMinor adverse eventsNational inpatient databaseSevere adverse eventsBone health statusNondialysis cohortNondialysis patientsPerioperative periodTKA patientsAdult patientsPreoperative riskComorbidity factorsInstitutional cohort
2017
The Need to Consider Longer-term Outcomes of Care
Zogg CK, Olufajo OA, Jiang W, Bystricky A, Scott JW, Shafi S, Havens JM, Salim A, Schoenfeld AJ, Haider AH. The Need to Consider Longer-term Outcomes of Care. Annals Of Surgery 2017, 266: 66-75. PMID: 28140382, DOI: 10.1097/sla.0000000000001932.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedBlack or African AmericanCaliforniaEmergency Service, HospitalHealthcare DisparitiesHispanic or LatinoHospital MortalityHumansIncomeInsurance CoverageInsurance, HealthLongitudinal StudiesMiddle AgedOutcome Assessment, Health CarePatient ReadmissionPostoperative ComplicationsProportional Hazards ModelsSurgical Procedures, OperativeSurvival AnalysisWhite PeopleYoung AdultConceptsLong-term outcomesNon-Hispanic blacksUnplanned readmissionMajor morbidityWhite patientsMinority patientsEthnic disparitiesEmergency general surgery patientsCalifornia State Inpatient DatabaseCox proportional hazards modelDiagnostic categoriesOlder adultsGeneral surgery patientsState Inpatient DatabasesProportional hazards modelRisk-adjusted differencesHispanic older adultsEGS patientsEGS volumeReadmission trendsSurgery patientsSurgical patientsHospital proportionInpatient DatabasePostacute phase
2016
Are Older Adults With Hip Fractures Disadvantaged in Level 1 Trauma Centers?
Metcalfe D, Olufajo OA, Zogg CK, Gates JD, Weaver MJ, Harris MB, Rios-Diaz AJ, Haider AH, Salim A. Are Older Adults With Hip Fractures Disadvantaged in Level 1 Trauma Centers? Medical Care 2016, 54: 616-622. PMID: 26974676, DOI: 10.1097/mlr.0000000000000535.Peer-Reviewed Original ResearchConceptsLevel 1 trauma centerHigh-level trauma centersTrauma centerNontrauma centersHip fractureOlder adultsVenous thromboembolismPatient groupLevel 2 trauma centerIsolated hip fractureRetrospective cohort studyWorse clinical outcomesLength of stayLarge regional hospitalInhospital mortalityUnderwent surgeryUnplanned readmissionCohort studySurgical treatmentClinical outcomesInterhospital transferInpatient stayRegional hospitalHigher oddsBetter outcomesUnplanned 30-day readmissions in orthopaedic trauma
Metcalfe D, Olufajo OA, Zogg CK, Rios-Diaz A, Harris M, Weaver MJ, Haider AH, Salim A. Unplanned 30-day readmissions in orthopaedic trauma. Injury 2016, 47: 1794-1797. PMID: 27262770, DOI: 10.1016/j.injury.2016.05.007.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedCaliforniaChildChild, PreschoolComorbidityFemaleHumansInfantMaleMiddle AgedOrthopedic ProceduresPatient ReadmissionPostoperative ComplicationsQuality Indicators, Health CareRetrospective StudiesRisk FactorsSocioeconomic FactorsSurgical Wound InfectionTime FactorsWounds and InjuriesYoung AdultConceptsTrauma patientsCharlson Comorbidity IndexOverall readmission rateOrthopaedic trauma patientsPrimary outcome measureHospital quality metricsUnplanned readmission riskTrauma readmissionsComorbidity indexInitial hospitalizationReadmission ratesHospital readmissionPatient factorsProcedural complicationsTrauma admissionsMale sexReadmission riskSpinal fracturesCardiopulmonary diseaseBlack racePrimary diagnosisAcute hospitalsMusculoskeletal problemsObservational studyMedical adviceHospital 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 adultsOutcomes