2019
Coding 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 curve
2016
Unplanned 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 advice
2015
Operative delay to laparoscopic cholecystectomy
Schwartz DA, Shah AA, Zogg CK, Nicholas LH, Velopulos CG, Efron DT, Schneider EB, Haider AH. Operative delay to laparoscopic cholecystectomy. Journal Of Trauma And Acute Care Surgery 2015, 79: 15-21. PMID: 26091309, DOI: 10.1097/ta.0000000000000699.Peer-Reviewed Original ResearchConceptsHours of admissionAcute cholecystitisLaparoscopic cholecystectomyOperative managementCharlson Comorbidity IndexHospital-related factorsSecond hospital dayTime of surgeryNationwide Inpatient SampleEndoscopic retrograde cholangiopancreatographyLength of stayNext-day surgeryCost of careHealth care providersCost containmentComorbidity indexAdmission dayHospital daysLonger hospitalizationPatient demographicsAdult patientsMultivariable analysisOperative delayRetrograde cholangiopancreatographyPrimary diagnosis