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 ResearchConceptsJuly effectMajor morbidityPatient outcomesMajor adverse outcomesNationwide Readmissions DatabaseAdverse patient outcomesSystem-level factorsUS patientsAdverse outcomesSurgical conditionsInclusion criteriaPaucity of studiesReadmissionPatient encountersSystematic reviewMorbidityOutcomesNegative resultsMortalityYears of evidenceTotalYearsEvidencePatientsAdmission
2016
Hospital 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
2015
Racial/ethnic disparities in emergency general surgery: explained by hospital-level characteristics?
Hall EC, Hashmi ZG, Zafar SN, Zogg CK, Cornwell EE, Haider AH. Racial/ethnic disparities in emergency general surgery: explained by hospital-level characteristics? The American Journal Of Surgery 2015, 209: 604-609. PMID: 25683233, DOI: 10.1016/j.amjsurg.2014.11.005.Peer-Reviewed Original ResearchConceptsEmergency general surgeryHospital-level factorsEGS patientsHigher oddsGeneral surgeryEthnic disparitiesHospital-level characteristicsOdds of deathMultivariable logistic regressionNationwide Inpatient SampleAfrican AmericansHospital admissionAA patientsCaucasian patientsInpatient SamplePatientsLogistic regressionEthnic differencesDeathSurgeryOddsHospitalOverall disparityOutcomesDisparities