2019
Using Machine Learning Applied to Real-World Healthcare Data for Predictive Analytics: An Applied Example in Bariatric Surgery
Johnston SS, Morton JM, Kalsekar I, Ammann EM, Hsiao CW, Reps J. Using Machine Learning Applied to Real-World Healthcare Data for Predictive Analytics: An Applied Example in Bariatric Surgery. Value In Health 2019, 22: 580-586. PMID: 31104738, DOI: 10.1016/j.jval.2019.01.011.Peer-Reviewed Original ResearchConceptsLarge US healthcare claims databasesLaparoscopic metabolic surgeryHealthcare claims databasesType 2 diabetesStudy inclusion criteriaLogistic regression modelsDays postindexMedication cessationBariatric surgeryMetabolic surgeryT2D diagnosisCessation ratesPatient selectionMedication treatmentClaims databaseInclusion criteriaTreatment responseDiscriminative accuracyPatientsExternal validationSurgeryRegression modelsHealthcare dataTreatmentUseful predictive models
2016
National prevalence, causes, and risk factors for bariatric surgery readmissions
Garg T, Rosas U, Rivas H, Azagury D, Morton JM. National prevalence, causes, and risk factors for bariatric surgery readmissions. The American Journal Of Surgery 2016, 212: 76-80. PMID: 27133197, DOI: 10.1016/j.amjsurg.2016.01.023.Peer-Reviewed Original ResearchMeSH KeywordsAdultAge DistributionBariatric SurgeryBody Mass IndexDatabases, FactualFemaleGastrectomyGastric BypassGastroplastyHumansLaparoscopyLogistic ModelsMaleMiddle AgedMultivariate AnalysisObesity, MorbidOutcome Assessment, Health CarePatient ReadmissionPostoperative ComplicationsPrevalencePrognosisRetrospective StudiesRisk FactorsSex DistributionUnited StatesConceptsLaparoscopic adjustable gastric bandingAdjustable gastric bandingLaparoscopic sleeve gastrectomyGastric bandingGastric bypassLaparoscopic RouxSleeve gastrectomyBariatric surgeryChronic obstructive pulmonary diseaseObstructive pulmonary diseaseBody mass indexAfrican American raceLength of stayCurrent Procedure Terminology codesCommon readmissionReadmitted patientsPulmonary diseaseMass indexOperative timeRisk factorsNational prevalenceReadmissionTerminology codesPatientsPublic Use File
2014
Is Ambulatory Laparoscopic Roux-En-Y Gastric Bypass Associated With Higher Adverse Events?
Morton JM, Winegar D, Blackstone R, Wolfe B. Is Ambulatory Laparoscopic Roux-En-Y Gastric Bypass Associated With Higher Adverse Events? Annals Of Surgery 2014, 259: 286-292. PMID: 24169190, DOI: 10.1097/sla.0000000000000227.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAmbulatory Surgical ProceduresDatabases, FactualFemaleGastric BypassHumansLaparoscopyLength of StayLogistic ModelsLongitudinal StudiesMaleMiddle AgedMultivariate AnalysisObesity, MorbidOdds RatioPatient ReadmissionPostoperative ComplicationsTreatment OutcomeYoung AdultConceptsBody mass indexSerious complicationsGastric bypassMass indexMedian body mass indexLaparoscopic gastric bypass procedureHigher adverse eventsLaparoscopic Roux-EnY Gastric BypassGastric bypass proceduresLogistic regression analysisDistribution of LOSLogistic regression modelsLRYGB patientsLaparoscopic RouxRoux-enMedian LOSAdverse eventsMedian agePatient demographicsReadmission ratesBypass proceduresInsurance statusComplicationsClinical database
2013
Influence of Ethnicity on the Efficacy and Utilization of Bariatric Surgery in the USA
Sudan R, Winegar D, Thomas S, Morton J. Influence of Ethnicity on the Efficacy and Utilization of Bariatric Surgery in the USA. Journal Of Gastrointestinal Surgery 2013, 18: 130-136. PMID: 24101449, DOI: 10.1007/s11605-013-2368-1.Peer-Reviewed Original ResearchMeSH KeywordsAdultAge FactorsBlack or African AmericanBody Mass IndexComorbidityDatabases, FactualDiabetes MellitusEthnicityFemaleFollow-Up StudiesGastric BypassGastroesophageal RefluxHealth Status DisparitiesHispanic or LatinoHumansHyperlipidemiasHypertensionLongitudinal StudiesMaleMiddle AgedObesitySleep Apnea, ObstructiveTreatment OutcomeUnited StatesWhite PeopleConceptsBaseline characteristicsThirty-day mortality rateBariatric Outcomes Longitudinal DatabaseGastric bypass surgerySerious adverse eventsPearson's chi-square testChi-square testPatterns of utilizationSmaller percent declineComorbidity burdenBariatric surgeryStudy patientsUnderwent surgeryAdverse eventsBypass surgeryMortality rateInfluence of ethnicityEthnic disparitiesHeavier BMIRYGBSurgeryCategorical variablesComorbiditiesBMIT-test
2011
Declining Incidence of Neonatal Endophthalmitis in the United States
Moshfeghi A, Charalel R, Hernandez-Boussard T, Morton J, Moshfeghi D. Declining Incidence of Neonatal Endophthalmitis in the United States. American Journal Of Ophthalmology 2011, 151: 59-65.e1. PMID: 20970776, DOI: 10.1016/j.ajo.2010.07.008.Peer-Reviewed Original ResearchConceptsRetinopathy of prematurityRisk factorsBirth weightLive birthsNationwide Inpatient Sample databaseRetrospective cohort studyLow birth weightAssociated risk factorsIncidence of endophthalmitisSignificant risk factorsMain outcome measuresEndophthalmitis developmentSystemic bacteremiaEndogenous endophthalmitisCohort studyHospital dischargeHospitalized infantsOutcome measuresEndophthalmitisInternational ClassificationIncidenceStudy periodSample databaseNinth EditionBacteremia
2009
Incidence of Retinopathy of Prematurity in the United States: 1997 through 2005
Lad E, Hernandez-Boussard T, Morton J, Moshfeghi D. Incidence of Retinopathy of Prematurity in the United States: 1997 through 2005. American Journal Of Ophthalmology 2009, 148: 451-458.e2. PMID: 19541285, DOI: 10.1016/j.ajo.2009.04.018.Peer-Reviewed Original ResearchConceptsIncidence of retinopathyNational Inpatient SampleLength of stayIntraventricular hemorrhageBirth weightInpatient SampleFetal hemorrhageRespiratory conditionsBlood transferScleral buckle surgeryLow birth weightLaser photocoagulation therapyMultivariate logistic regressionROP incidenceBaseline characteristicsBuckle surgeryPremature infantsROP developmentPlana vitrectomyRetrospective studySurgical interventionPhotocoagulation therapyRisk factorsNewborn infantsHemolytic disease
2008
Are health related outcomes in acute pancreatitis improving? An analysis of national trends in the U.S. from 1997 to 2003.
Brown A, Young B, Morton J, Behrns K, Shaheen N. Are health related outcomes in acute pancreatitis improving? An analysis of national trends in the U.S. from 1997 to 2003. JOP Journal Of The Pancreas 2008, 9: 408-14. PMID: 18648131.Peer-Reviewed Original ResearchConceptsNational Inpatient Sample databasePrincipal discharge diagnosisAcute pancreatitisDischarge diagnosisHospital characteristicsStudy periodLarge non-teaching hospitalsCommon inflammatory disorderLength of stayNon-teaching hospitalsChi-square testFrequency of dischargeMedical ICUHospital admissionMedian lengthInflammatory disordersPancreatitisMortalityAlcohol useStayNational databaseSample databaseU.S. hospitalsMean lengthDemographic characteristics
2006
NIS vs SAGES
Morton JM, Galanko JA, Soper NJ, Low DE, Hunter J, Traverso LW. NIS vs SAGES. Surgical Endoscopy 2006, 20: 1124-1128. PMID: 16703443, DOI: 10.1007/s00464-004-8829-6.Peer-Reviewed Original ResearchConceptsNationwide Inpatient SampleOutcomes ProjectComplication ratePopulation-based databaseLow complication rateLength of stayHigh rateMore comorbiditiesPulmonary complicationsHospital dischargeLow morbidityEmergency admissionsSurgeons databaseBarrett's esophagusEsophageal cancerInpatient SampleTeaching hospitalChi-square analysisOutcome dataFundoplicationBackgroundSurgical outcomesHigher reportingComorbiditiesHospital affiliationOutcome variables
2005
Analysis of the SAGES outcomes initiative cholecystectomy registry
Velanovich V, Morton J, McDonald M, Orlando R, Maupin G, Traverso L. Analysis of the SAGES outcomes initiative cholecystectomy registry. Surgical Endoscopy 2005, 20: 43-50. PMID: 16333539, DOI: 10.1007/s00464-005-0378-0.Peer-Reviewed Original ResearchConceptsMost patientsSAGES Outcomes InitiativeBile duct injuryInitiative databaseIntraoperative gallbladder perforationBackgroundIn 1999Biliary colicDuct injuryMost complicationsPostoperative eventsElective surgeryLaparoscopic cholecystectomyGallbladder perforationGeneral anesthesiaIntraoperative cholangiogramAdverse outcomesSAGES membersOutcomes InitiativeBiliary imagingOperating surgeonPatientsGallbladder casesAmerican GastrointestinalNormal activityEndoscopic SurgeonsAnalysis of the SAGES Outcomes Initiative groin hernia database
Velanovich V, Shadduck P, Khaitan L, Morton J, Maupin G, Traverso L. Analysis of the SAGES Outcomes Initiative groin hernia database. Surgical Endoscopy 2005, 20: 191-198. PMID: 16341567, DOI: 10.1007/s00464-005-0436-7.Peer-Reviewed Original ResearchConceptsSAGES Outcomes InitiativeHernia DatabaseVoluntary registryOutcomes InitiativeClass IASA class IFirst postoperative visitAmerican Gastrointestinal Endoscopic SurgeonsBackgroundIn 1999Unilateral herniaPostoperative eventsMost patientsPostoperative dataPostoperative visitNarcotic useOpen repairRandomized trialsGeneral anesthesiaHernia casesAnesthetic techniqueEndoscopic repairSymptomatic herniaHernia RegistryMandatory registrySignificant bruising