2025
Validity of Diagnostic Codes and Laboratory Tests to Identify Cholangiocarcinoma and Its Subtypes
Ferrante N, Hubbard R, Weinfurtner K, Mezina A, Newcomb C, Furth E, Bhattacharya D, Njei B, Taddei T, Singal A, Hoteit M, Park L, Kaplan D, Re V. Validity of Diagnostic Codes and Laboratory Tests to Identify Cholangiocarcinoma and Its Subtypes. Pharmacoepidemiology And Drug Safety 2025, 34: e70154. PMID: 40328444, PMCID: PMC12055315, DOI: 10.1002/pds.70154.Peer-Reviewed Original ResearchConceptsPositive predictive valueVeterans Health AdministrationExtrahepatic cholangiocarcinomaValidity of diagnostic codesInternational Classification of Diseases for OncologyUS Veterans Health AdministrationConfidence intervalsPharmacoepidemiological studiesICD-O-3Days of diagnosisVA dataHealth AdministrationIntrahepatic cholangiocarcinomaDiagnostic codesHistology codesCholangiocarcinomaUnique patientsInclusion criteriaCholangiocarcinoma subtypesTopography codesPredictive valuePatientsEvaluate medicationsSubtypesEvaluate determinantsMortality, Hepatic Decompensation, and Cardiovascular Outcomes in Lean vs. Non-lean MASLD Cirrhosis: A Veterans Affairs Cohort Study
Njei B, Mezzacappa C, John B, Serper M, Kaplan D, Taddei T, Mahmud N. Mortality, Hepatic Decompensation, and Cardiovascular Outcomes in Lean vs. Non-lean MASLD Cirrhosis: A Veterans Affairs Cohort Study. Digestive Diseases And Sciences 2025, 70: 802-813. PMID: 39779587, PMCID: PMC11839701, DOI: 10.1007/s10620-024-08764-4.Peer-Reviewed Original ResearchConceptsNon-lean individualsAll-cause mortalityMajor adverse cardiovascular eventsIncreased risk of all-cause mortalityRisk of all-cause mortalityVeterans Health AdministrationRisk of hepatic decompensationPrevalence of diabetesRisk of cardiovascular mortalityHepatic decompensationHigher mortality riskCardiovascular-related mortalityCox proportional hazards modelsCohort study of patientsCardiovascular outcomesIncident major adverse cardiovascular eventsRetrospective cohort study of patientsProportional hazards modelNon-HispanicRetrospective cohort studyCompeting risk regressionHealth AdministrationMultivariate Cox proportional hazards modelLean individualsAssessed associations
2024
Hepatotoxicity Score: A New Method to Adjust for Use of Potentially Hepatotoxic Medications by Chronic Liver Disease Status
Re V, Newcomb C, Carbonari D, Mezochow A, Hennessy S, Rentsch C, Park L, Tate J, Bräu N, Bhattacharya D, Lim J, Mezzacappa C, Njei B, Roy J, Taddei T, Justice A, Torgersen J. Hepatotoxicity Score: A New Method to Adjust for Use of Potentially Hepatotoxic Medications by Chronic Liver Disease Status. Pharmacoepidemiology And Drug Safety 2024, 33: e70069. PMID: 39662972, PMCID: PMC11634562, DOI: 10.1002/pds.70069.Peer-Reviewed Original ResearchConceptsProton pump inhibitor initiationHazard ratioVeterans Health AdministrationSevere acute liver injuryProton pump inhibitorsChronic liver diseaseAcute liver injuryRates of hospitalizationSafety of medicationsPPI initiativesHealth AdministrationLiver disease statusMedication exposurePharmacoepidemiological studiesMedicationConfoundingScoresReports of hepatotoxicityDisease statusHepatotoxic medicationsDrug exposurePump inhibitorsHepatotoxic drugsOutpatient initiationHepatic safetyThe burden of cirrhosis and other chronic liver disease in the middle east and North Africa (MENA) region over three decades
Al Ta’ani O, Aleyadeh W, Al-Ajlouni Y, Alnimer L, Ismail A, Natour B, Njei B. The burden of cirrhosis and other chronic liver disease in the middle east and North Africa (MENA) region over three decades. BMC Public Health 2024, 24: 2979. PMID: 39468483, PMCID: PMC11514855, DOI: 10.1186/s12889-024-20445-5.Peer-Reviewed Original ResearchConceptsAge-standardized incidence rateAge-standardized death ratesDisability-adjusted life yearsBurden of cirrhosisGlobal Burden of DiseaseDisability burdenDeath rateAge-standardized disability-adjusted life yearsPublic health effortsBurden of diseaseSignificant health challengesGender-specific interventionsLiver disease incidenceChronic liver diseaseIncident casesMENA regionHealth effortsCountry-specific trendsHealthcare systemGlobal burdenHealth challengesIncreasing burdenIncidence rateLife yearsEpidemiological trendsThe impact of overweight and obesity on health outcomes in the United States from 1990 to 2021
Al Ta'ani O, Al‐Ajlouni Y, Aleyadeh W, Al‐Bitar F, Alsakarneh S, Saadeh A, Alhuneafat L, Njei B. The impact of overweight and obesity on health outcomes in the United States from 1990 to 2021. Diabetes Obesity And Metabolism 2024, 26: 5455-5465. PMID: 39261301, DOI: 10.1111/dom.15924.Peer-Reviewed Original ResearchConceptsDisability-adjusted life yearsAge-standardized death ratesSocio-demographic indexBody mass indexHigher body mass indexHealth outcomesDeath rateAge-standardized disability-adjusted life yearsComprehensive public health strategyGlobal Burden of Disease dataBurden of disease dataAge-standardized DALY rateAnnual percentage changePublic health strategiesSignificant public health challengeElevated body mass indexPublic health challengeUnited StatesImpact public healthHealth strategiesDALY ratesOlder adultsEnvironmental interventionsGlobal burdenHealth challenges
2019
Regional and Rural-Urban Differences in the Use of Direct-acting Antiviral Agents for Hepatitis C Virus
Njei B, Esserman D, Krishnan S, Ohl M, Tate JP, Hauser RG, Taddei T, Lim J, Justice AC. Regional and Rural-Urban Differences in the Use of Direct-acting Antiviral Agents for Hepatitis C Virus. Medical Care 2019, 57: 279-285. PMID: 30807449, PMCID: PMC6436819, DOI: 10.1097/mlr.0000000000001071.Peer-Reviewed Original ResearchConceptsDirect-acting antiviral agentsHepatitis C virus infectionVeterans Affairs Healthcare SystemRural-Urban Commuting Area codesCurative HCV treatmentRural-urban designationC virus infectionElectronic health record dataHepatitis C virusPrior treatment experienceLower odds ratioHealth record dataZone improvement plan codeEligible patientsHCV treatmentAntiretroviral medicationsRural-urban residenceLiver diseaseUnadjusted analysesC virusRural-urban differencesOdds ratioMultivariable modelLower incidenceObservational studyEffects of Hypercholesterolemia and Statin Exposure on Survival in a Large National Cohort of Patients With Cirrhosis
Kaplan DE, Serper M, Mehta R, Fox R, John B, Aytaman A, Baytarian M, Hunt K, Albrecht J, Njei B, Taddei TH, Group V. Effects of Hypercholesterolemia and Statin Exposure on Survival in a Large National Cohort of Patients With Cirrhosis. Gastroenterology 2019, 156: 1693-1706.e12. PMID: 30660733, DOI: 10.1053/j.gastro.2019.01.026.Peer-Reviewed Original ResearchMeSH KeywordsAgedCarcinoma, HepatocellularCholesterolFemaleHeart FailureHumansHydroxymethylglutaryl-CoA Reductase InhibitorsHypercholesterolemiaLiver CirrhosisLiver NeoplasmsMaleMiddle AgedMyocardial InfarctionPropensity ScoreProportional Hazards ModelsRandomized Controlled Trials as TopicRetrospective StudiesStrokeSurvival RateUnited StatesConceptsRetrospective cohort studyStatin exposureLarge national cohortHepatic decompensationStatin useCohort studyHazard ratioNational cohortMultivariable Cox proportional hazards modelsCox proportional hazards modelBaseline total cholesterolPrior statin exposureStatin-naïve subjectsEffect of hypercholesterolemiaVeterans Health AdministrationProportional hazards modelHepatocellular carcinoma developmentDecrease of mortalityRisk-set matchingChild-TurcottePugh classStatin therapyDL increaseTotal cholesterolHepatic function
2018
Impact of bariatric surgery in patients with HIV infection
Sharma P, McCarty TR, Ngu JN, O'Donnell M, Njei B. Impact of bariatric surgery in patients with HIV infection. AIDS 2018, 32: 1959-1965. PMID: 30157083, PMCID: PMC6126912, DOI: 10.1097/qad.0000000000001915.Peer-Reviewed Original ResearchConceptsBariatric surgeryIncidence risk ratioMorbid obesityRespiratory failureObese patientsRenal failureClinical outcomesUnited States Nationwide Inpatient Sample databaseNationwide Inpatient Sample databaseObese HIV patientsLife-threatening morbidityUrinary tract infectionWeight loss surgeryRelevant clinical outcomesLength of stayRates of obesityHospital mortalityHIV patientsThromboembolic eventsSecondary outcomesTract infectionsHIV infectionPrimary outcomeMultivariable analysisDischarge diagnosis
2017
Impact of Bariatric Surgery on Outcomes of Patients with Inflammatory Bowel Disease: a Nationwide Inpatient Sample Analysis, 2004–2014
Sharma P, McCarty TR, Njei B. Impact of Bariatric Surgery on Outcomes of Patients with Inflammatory Bowel Disease: a Nationwide Inpatient Sample Analysis, 2004–2014. Obesity Surgery 2017, 28: 1015-1024. PMID: 29047047, DOI: 10.1007/s11695-017-2959-0.Peer-Reviewed Original ResearchMeSH KeywordsAdolescentAdultAgedAged, 80 and overBariatric SurgeryDatabases, FactualFemaleHospital CostsHospital MortalityHospitalizationHumansIncidenceInflammatory Bowel DiseasesInpatientsMaleMiddle AgedMorbidityObesity, MorbidPostoperative ComplicationsPrognosisTreatment OutcomeUnited StatesYoung AdultConceptsInflammatory bowel diseaseIncidence risk ratioObese IBD patientsBariatric surgeryMorbid obesityIBD patientsRenal failureBowel diseaseClinical outcomesUnited States National Inpatient Sample (NIS) databaseNational Inpatient Sample databaseOutcomes of patientsLength of stayPaucity of dataHospital mortalityThromboembolic eventsObese patientsSecondary outcomesHospitalized patientsPrimary outcomeMultivariable analysisDischarge diagnosisFistula formationHospitalization costsRisk ratioSurvival after treatment with curative intent for hepatocellular carcinoma among patients with vs without non‐alcoholic fatty liver disease
Wong CR, Njei B, Nguyen MH, Nguyen A, Lim JK. Survival after treatment with curative intent for hepatocellular carcinoma among patients with vs without non‐alcoholic fatty liver disease. Alimentary Pharmacology & Therapeutics 2017, 46: 1061-1069. PMID: 28960360, DOI: 10.1111/apt.14342.Peer-Reviewed Original ResearchConceptsNon-alcoholic fatty liver diseaseFatty liver diseaseLarger tumor sizeLiver diseaseHCC etiologyCurative intentNAFLD-HCCCurative treatmentTumor sizeMetastatic HCCCardiovascular diseaseHepatocellular carcinomaDecompensated liver diseaseWorse median survivalAbsence of cirrhosisSignificant survival differenceDiagnosis of HCCLess cirrhosisNAFLD groupMedian survivalWorse survivalFavorable survivalIndependent predictorsLiver cirrhosisHCC groupImpact of bariatric surgery on outcomes of patients with nonalcoholic fatty liver disease: a nationwide inpatient sample analysis, 2004–2012
McCarty TR, Echouffo-Tcheugui JB, Lange A, Haque L, Njei B. Impact of bariatric surgery on outcomes of patients with nonalcoholic fatty liver disease: a nationwide inpatient sample analysis, 2004–2012. Surgery For Obesity And Related Diseases 2017, 14: 74-80. PMID: 29055669, DOI: 10.1016/j.soard.2017.09.511.Peer-Reviewed Original ResearchConceptsNonalcoholic fatty liver diseasePrior bariatric surgeryBariatric surgeryFatty liver diseaseIncidence risk ratioNAFLD patientsMorbid obesityRenal failureClinical outcomesLiver diseaseMyocardial infarctionRisk ratioNationwide Inpatient Sample AnalysisNationwide Inpatient Sample databaseObese NAFLD patientsOutcomes of patientsBariatric surgery proceduresMorbidly obese individualsPopulation-based dataHospital mortalityHospital morbidityInpatient mortalitySecondary outcomesHospitalized patientsPrimary outcomeEarly transjugular intrahepatic portosystemic shunt in US patients hospitalized with acute esophageal variceal bleeding
Njei B, McCarty TR, Laine L. Early transjugular intrahepatic portosystemic shunt in US patients hospitalized with acute esophageal variceal bleeding. Journal Of Gastroenterology And Hepatology 2017, 32: 852-858. PMID: 27624167, PMCID: PMC5350067, DOI: 10.1111/jgh.13593.Peer-Reviewed Original ResearchConceptsEarly transjugular intrahepatic portosystemic shuntTransjugular intrahepatic portosystemic shuntAcute esophageal variceal bleedingEsophageal variceal bleedingIntrahepatic portosystemic shuntVariceal bleedingUS patientsPortosystemic shuntNationwide Inpatient Sample databaseHospital mortality rateUS clinical practiceDays of hospitalizationFurther bleedingHospital deathRecurrent bleedingEndoscopic therapyInpatient mortalityPreventive therapySecondary outcomesHepatic encephalopathyPrimary outcomeHigh riskHospital reductionMortality ratePatients
2016
Trends in esophageal cancer survival in United States adults from 1973 to 2009: A SEER database analysis
Njei B, McCarty TR, Birk JW. Trends in esophageal cancer survival in United States adults from 1973 to 2009: A SEER database analysis. Journal Of Gastroenterology And Hepatology 2016, 31: 1141-1146. PMID: 26749521, PMCID: PMC4885788, DOI: 10.1111/jgh.13289.Peer-Reviewed Original ResearchMeSH KeywordsAdenocarcinomaAge FactorsAgedCarcinoma, Squamous CellEarly Detection of CancerEsophageal NeoplasmsEsophageal Squamous Cell CarcinomaEsophagectomyFemaleHumansKaplan-Meier EstimateMaleMiddle AgedMultivariate AnalysisNeoplasm StagingPredictive Value of TestsProportional Hazards ModelsRetrospective StudiesRisk FactorsSEER ProgramSurvival RateTime FactorsTreatment OutcomeUnited StatesConceptsSquamous cell carcinomaEsophageal cancerEsophageal adenocarcinomaMedian survivalBetter long-term survival outcomesLong-term survival outcomesOverall median survivalEnd Results (SEER) databaseProportion of patientsSEER database analysisSignificant survival improvementProportional hazards regressionEsophageal cancer survivalLong-term survivalIndependent mortality factorsLocalized diseaseCurative stageSurgical treatmentSurvival improvementHazards regressionResults databaseSurvival outcomesCell carcinomaTreatment modalitiesCancer survivalSplenic Injury and Hemoperitoneum as a Complication of Colonoscopy: A Case Report and Literature Review.
McCarty TR, Liu A, Njei B. Splenic Injury and Hemoperitoneum as a Complication of Colonoscopy: A Case Report and Literature Review. Connecticut Medicine 2016, 80: 217-21. PMID: 27265925.Peer-Reviewed Original ResearchConceptsSplenic injuryPotential complicationsLife-threatening adverse eventsSplenic artery embolizationLife-threatening complicationsClinical examination findingsComplication of colonoscopyModality of choiceRecent colonoscopyUnderappreciated complicationCardiorespiratory complicationsAdverse eventsArtery embolizationExamination findingsCase reportGeneral internistsTherapeutic modalitiesElicited historyClinical acumenComplicationsColonoscopyInjuryHemoperitoneumFrequent useModalities
2015
Syncytial giant cell hepatitis in a patient with chronic lymphocytic leukemia
Gupta N, Njei B. Syncytial giant cell hepatitis in a patient with chronic lymphocytic leukemia. Journal Of Digestive Diseases 2015, 16: 683-688. PMID: 26147671, PMCID: PMC4824312, DOI: 10.1111/1751-2980.12273.Peer-Reviewed Original ResearchConceptsGiant cell hepatitisChronic lymphocytic leukemiaSyncytial giant cell hepatitisHigh-dose corticosteroidsHistory of chemotherapySuch confounding variablesPediatric populationDrug medicationAutoimmune diseasesLiver enzymesVirus infectionLymphocytic leukemiaHepatitisConfounding variablesPatientsViral particlesDiseaseAdultsSuch casesCorticosteroidsHypogammaglobulinemiaMedicationsChemotherapyMalignancyLeukemiaEmerging trends in hepatocellular carcinoma incidence and mortality
Njei B, Rotman Y, Ditah I, Lim JK. Emerging trends in hepatocellular carcinoma incidence and mortality. Hepatology 2015, 61: 191-199. PMID: 25142309, PMCID: PMC4823645, DOI: 10.1002/hep.27388.Peer-Reviewed Original ResearchConceptsIB mortalityHCC incidenceHepatocellular carcinomaIncidence of HCCMultivariable Cox regression analysisOverall median survivalCox regression analysisEnd Results (SEER) dataSignificant survival improvementAge-adjusted incidenceU.S. populationHepatocellular carcinoma incidenceJoinpoint Regression ProgramIncidence-based mortalityRegression analysisSignificant increaseCurative modalityLiver transplantCurative stageMedian survivalSurvival improvementCarcinoma incidenceTumor sizeVascular invasionPrimary tumor
2014
Risk of comorbidities and outcomes in patients with lower gastrointestinal bleeding-a nationwide study
Venkatesh PG, Njei B, Sanaka MR, Navaneethan U. Risk of comorbidities and outcomes in patients with lower gastrointestinal bleeding-a nationwide study. International Journal Of Colorectal Disease 2014, 29: 953-960. PMID: 24913253, PMCID: PMC4823646, DOI: 10.1007/s00384-014-1915-x.Peer-Reviewed Original ResearchConceptsLower gastrointestinal bleedingOutcomes of patientsYears of ageMortality rateGastrointestinal bleedingPrevalence of comorbiditiesRisk of comorbiditiesNumber of comorbiditiesPrimary discharge diagnosisCongestive heart failureImpact of comorbiditiesClinical Modification codesHealth care utilizationIdentification of comorbiditiesRisk of mortalityRisk-adjustment toolLogistic regression modelsHospital mortalityMore comorbiditiesComorbid illnessesElixhauser indexHospital stayRenal failureHeart failureOverall mortalityGastrointestinal: Neurofibromatosis type 1, duodenal somatostatinoma and gastrointestinal stromal tumors; a triad worth remembering
Njei B, Sanchez H. Gastrointestinal: Neurofibromatosis type 1, duodenal somatostatinoma and gastrointestinal stromal tumors; a triad worth remembering. Journal Of Gastroenterology And Hepatology 2014, 29: 663-663. PMID: 24646427, DOI: 10.1111/jgh.12531.Peer-Reviewed Original Research
2013
The changing epidemiology of hepatitis C virus infection in the United States: National health and nutrition examination survey 2001 through 2010
Ditah I, Ditah F, Devaki P, Ewelukwa O, Ditah C, Njei B, Luma H, Charlton M. The changing epidemiology of hepatitis C virus infection in the United States: National health and nutrition examination survey 2001 through 2010. Journal Of Hepatology 2013, 60: 691-698. PMID: 24291324, DOI: 10.1016/j.jhep.2013.11.014.Peer-Reviewed Original ResearchConceptsNutrition Examination SurveyHCV infectionExamination SurveyNational Health and Nutrition Examination SurveyHealth and Nutrition Examination SurveyThe National Health and Nutrition Examination SurveyLow economic statusAssociated with HCV infectionHepatitis C virus infectionBurden of HCV infectionForeign born personsPrevalence of anti-HCVChronic HCV infectionC virus infectionPrevalence of HCVUnited StatesIncident casesInfected personsNational healthHIV statusGeneral populationAnti-HCVBlood transfusionHCV RNAHepatitis CIncreased mortality with peptic ulcer bleeding in patients with both compensated and decompensated cirrhosis
Venkatesh P, Parasa S, Njei B, Sanaka M, Navaneethan U. Increased mortality with peptic ulcer bleeding in patients with both compensated and decompensated cirrhosis. Gastrointestinal Endoscopy 2013, 79: 605-614.e3. PMID: 24119507, DOI: 10.1016/j.gie.2013.08.026.Peer-Reviewed Original ResearchConceptsInternational Classification of DiseasesPopulation-based studyHospital costsImpact of cirrhosisClassification of DiseasesPeptic ulcer bleedingIncreased mortalityAssociated with increased mortalityLength of stayInternational ClassificationIn-hospital mortalityControl groupStratified analysisAdministrative dataDecompensated cirrhosisHigher mortalityCompensated cirrhosisProportion of patientsAssociated with worse outcomesUlcer bleedingMortalityHospitalOutcomesOutcomes of patientsPresence of cirrhosis
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