2022
Births After Bariatric Surgery in the United States
Chao G, Yang J, Peahl A, Thumma J, Dimick J, Arterburn D, Telem D. Births After Bariatric Surgery in the United States. Annals Of Surgery 2022, 277: e801-e807. PMID: 35762610, PMCID: PMC9794635, DOI: 10.1097/sla.0000000000005438.Peer-Reviewed Original ResearchConceptsRisk of reinterventionAdverse obstetric outcomesBariatric surgery patientsObstetric outcomesBariatric surgerySurgery patientsFemale patients ages 18Multivariable logistic regression analysisEvent ratesNational US cohortSevere maternal morbidityLaparoscopic sleeve gastrectomyPatients age 18Retrospective cohort studyIBM MarketScan databasesMultivariable logistic regressionKaplan-Meier estimatesLogistic regression analysisIncidence of birthsMaternal safetyDelivery complicationsGastric bypassGestational diabetesHypertensive disordersMaternal morbidityMedication Use for Obesity-Related Comorbidities After Sleeve Gastrectomy or Gastric Bypass
Howard R, Chao G, Yang J, Thumma J, Arterburn D, Telem D, Dimick J. Medication Use for Obesity-Related Comorbidities After Sleeve Gastrectomy or Gastric Bypass. JAMA Surgery 2022, 157: 248-256. PMID: 35019988, PMCID: PMC8756362, DOI: 10.1001/jamasurg.2021.6898.Peer-Reviewed Original ResearchConceptsTime of surgeryGastric bypassMedication discontinuationSleeve gastrectomyCumulative incidenceMedication useHyperlipidemia medicationsComorbidity resolutionLower incidenceCommon bariatric surgical proceduresLipid-lowering medication useComparative effectiveness research studyAdult Medicare beneficiariesDiabetes medication useAntihypertensive medication useLipid-lowering medicationsBariatric surgical proceduresSubset of patientsLong-term trialsAntihypertensive medicationsDiabetes medicationsLaparoscopic RouxBariatric surgeryPrimary outcomeMean ageComparative effectiveness of sleeve gastrectomy vs Roux-en-Y gastric bypass in patients giving birth after bariatric surgery: reinterventions and obstetric outcomes
Chao G, Yang J, Peahl A, Thumma J, Dimick J, Arterburn D, Telem D. Comparative effectiveness of sleeve gastrectomy vs Roux-en-Y gastric bypass in patients giving birth after bariatric surgery: reinterventions and obstetric outcomes. Surgical Endoscopy 2022, 36: 6954-6968. PMID: 35099628, DOI: 10.1007/s00464-022-09063-7.Peer-Reviewed Original ResearchConceptsAdverse obstetric outcomesGastric bypassObstetric outcomesBariatric surgerySleeve gastrectomyComparative effectivenessRisk of reinterventionLaparoscopic sleeve gastrectomyRetrospective cohort studyMultivariable logistic regressionSignificant differencesCommon procedure todayResultsFrom 2011Reintervention rateBariatric proceduresCohort studyIBM MarketScanNational cohortInverse probability weightingGastrectomyReinterventionRouxSurgeryPatientsBypass
2021
Comparative Safety of Sleeve Gastrectomy and Gastric Bypass Up to 5 Years After Surgery in Patients With Severe Obesity
Howard R, Chao G, Yang J, Thumma J, Chhabra K, Arterburn D, Ryan A, Telem D, Dimick J. Comparative Safety of Sleeve Gastrectomy and Gastric Bypass Up to 5 Years After Surgery in Patients With Severe Obesity. JAMA Surgery 2021, 156: 1160-1169. PMID: 34613354, PMCID: PMC8495604, DOI: 10.1001/jamasurg.2021.4981.Peer-Reviewed Original ResearchConceptsAdjusted hazard ratioSleeve gastrectomyGastric bypassRisk of mortalityCumulative incidenceLong-term riskBariatric surgerySurgical revisionComparative safetyMAIN OUTCOMEUnknown raceLower long-term riskHigher long-term riskUnderwent sleeve gastrectomyRetrospective cohort studyEmergency department useHealth care useLong-term safetyMedicare claims databaseTotal health care spendingCause hospitalizationLaparoscopic RouxCohort studyHazard ratioSecondary outcomes
2020
Comparative Safety of Sleeve Gastrectomy and Gastric Bypass
Chhabra K, Telem D, Chao G, Arterburn D, Yang J, Thumma J, Ryan A, Blumenthal B, Dimick J. Comparative Safety of Sleeve Gastrectomy and Gastric Bypass. Annals Of Surgery 2020, 275: 539-545. PMID: 33201113, DOI: 10.1097/sla.0000000000004297.Peer-Reviewed Original ResearchConceptsSleeve gastrectomyGastric bypassBariatric surgeryIBM MarketScanLarge cohortCommon bariatric operationBariatric surgery patientsSelection biasSuperior safety profileLong-term safetyOverall healthcare spendingGastroesophageal refluxSurgery patientsBariatric operationsSafety profileComparative safetyGastrectomyBACKGROUND DATAHigh riskInternational ClassificationPatientsSurgeryPayer decisionsBypassProcedural Terminology
2019
The Role of Commercial Health Insurance Characteristics in Bariatric Surgery Utilization
Chhabra KR, Fan Z, Chao GF, Dimick JB, Telem DA. The Role of Commercial Health Insurance Characteristics in Bariatric Surgery Utilization. Annals Of Surgery 2019, 273: 1150-1156. PMID: 31714318, DOI: 10.1097/sla.0000000000003569.Peer-Reviewed Original ResearchConceptsInsurance plan typeBariatric surgery utilizationHigher cost sharingBariatric surgerySurgery utilizationBariatric operationsIBM MarketScan Commercial Claims DatabasesMarketScan Commercial Claims databasePlan typeCommercial claims databaseHealth insurance characteristicsRetrospective reviewClaims databaseEligible personsSurgical careSurgerySurgical utilizationMedical careExposure variablesInsurance characteristicsCost sharingInsurance coverageLower cost sharingCareQuarter 4Impact of Statewide Essential Health Benefits on Utilization of Bariatric Surgery
Chhabra KR, Fan Z, Chao GF, Dimick JB, Telem DA. Impact of Statewide Essential Health Benefits on Utilization of Bariatric Surgery. Obesity Surgery 2019, 30: 374-377. PMID: 31338734, PMCID: PMC6954295, DOI: 10.1007/s11695-019-04092-z.Peer-Reviewed Original ResearchConceptsBariatric surgery utilizationEssential health benefitsBariatric surgerySurgery utilizationHealth benefitsInadequate insurance coverageIBM MarketScanACA implementationHealth Benefits ProgramConclusionsOur findingsSurgeryBackgroundIn responseInsurance coverageInsurance plansPopulation levelBenefit programsMarketScan
2018
Revised cardiac risk index poorly predicts cardiovascular complications after adhesiolysis for small bowel obstruction
Asuzu DT, Chao GF, Pei KY. Revised cardiac risk index poorly predicts cardiovascular complications after adhesiolysis for small bowel obstruction. Surgery 2018, 164: 1198-1203. PMID: 29945781, DOI: 10.1016/j.surg.2018.05.012.Peer-Reviewed Original ResearchConceptsCardiac Risk IndexSmall bowel obstructionCardiovascular complicationsBowel obstructionRisk calculatorNational Surgical Quality Improvement Program risk calculatorNational Surgical Quality Improvement Program datasetSurgeons National Surgical Quality Improvement ProgramNational Surgical Quality Improvement ProgramSurgical Quality Improvement ProgramCardiac risk evaluationLarge surgical samplesPreoperative cardiac evaluationPreoperative risk stratificationNumber of patientsUnivariable logistic regressionQuality Improvement ProgramRisk indexSurgical subgroupsCardiac complicationsCardiac evaluationCardiac eventsLaparoscopic adhesiolysisSurgical patientsPreoperative testing
2017
Differences in rural and urban outcomes: a national inspection of emergency general surgery patients
Chaudhary MA, Shah AA, Zogg CK, Changoor N, Chao G, Nitzschke S, Havens JM, Haider AH. Differences in rural and urban outcomes: a national inspection of emergency general surgery patients. Journal Of Surgical Research 2017, 218: 277-284. PMID: 28985861, DOI: 10.1016/j.jss.2017.06.034.Peer-Reviewed Original ResearchConceptsLength of stayRural patientsEGS conditionsUrban hospitalOverall oddsEmergency general surgery conditionsEmergency general surgery patientsShorter LOSGeneral surgery patientsPatient-level factorsLimited clinical importanceNational Inpatient SampleSurgery of TraumaRegionalization of careCost of careMultivariable regression modelsUnited States populationHospital mortalityEGS patientsSurgery patientsUrban patientsAdult patientsMajor complicationsPrimary diagnosisInpatient Sample
2015
Asian Americans and prostate cancer: A nationwide population-based analysis
Chao GF, Krishna N, Aizer AA, Dalela D, Hanske J, Li H, Meyer CP, Kim SP, Mahal BA, Reznor G, Schmid M, Choueiri TK, Nguyen PL, O׳Leary M, Trinh QD. Asian Americans and prostate cancer: A nationwide population-based analysis. Urologic Oncology Seminars And Original Investigations 2015, 34: 233.e7-233.e15. PMID: 26725248, DOI: 10.1016/j.urolonc.2015.11.013.Peer-Reviewed Original ResearchConceptsAsian Indians/PakistanisPCa-specific mortalityIndians/PakistanisProstate cancerDefinitive treatmentBetter cancer-specific survivalNationwide population-based analysisPacific IslandersCancer-specific survivalEnd Results (SEER) databaseAdvanced prostate cancerLocalized prostate cancerMetastatic prostate cancerNon-Hispanic white counterpartsPopulation-based analysisEthnic groupsPCa deathAAPI groupsResults databaseWorse outcomesCancer profileGreater riskRacial disparitiesFilipino menMenCancer-Specific Mortality of Asian Americans Diagnosed With Cancer: A Nationwide Population-Based Assessment
Trinh QD, Nguyen PL, Leow JJ, Dalela D, Chao GF, Mahal BA, Nayak M, Schmid M, Choueiri TK, Aizer AA. Cancer-Specific Mortality of Asian Americans Diagnosed With Cancer: A Nationwide Population-Based Assessment. Journal Of The National Cancer Institute 2015, 107: djv054. PMID: 25794888, DOI: 10.1093/jnci/djv054.Peer-Reviewed Original ResearchConceptsCancer-specific mortalityNon-Hispanic white patientsWhite patientsDefinitive treatmentColorectal cancerRisk regressionLower cancer-specific mortalityAsian subgroupsCancer-specific survivalAsian American cancer patientsEnd Results ProgramAmerican cancer patientsCancer survival outcomesInequality of careNon-Hispanic whitesHazard ratioNationwide PopulationIndependent predictorsTumor characteristicsResults ProgramSurvival outcomesPotential confoundersCancer careCancer patientsCancer survival