2022
Rates of, and factors associated with, switching among generic levothyroxine preparations in commercially insured American adults
Brito JP, Deng Y, Ross JS, Choi NH, Graham DJ, Qiang Y, Rantou E, Wang Z, Zhao L, Shah ND, Lipska KJ. Rates of, and factors associated with, switching among generic levothyroxine preparations in commercially insured American adults. Endocrine 2022, 76: 349-358. PMID: 35107758, PMCID: PMC9210352, DOI: 10.1007/s12020-022-02987-z.Peer-Reviewed Original ResearchMeSH KeywordsAdultAgedDrugs, GenericFemaleHumansMaleMedicareMiddle AgedRetrospective StudiesThyroid HormonesThyroxineUnited StatesConceptsL-thyroxineLarge administrative claims databaseMultivariate logistic regression analysisAdministrative claims databaseThyroid hormone valuesLogistic regression analysisNumber of pharmaciesSettingRetrospective studyPrescription fillsTreatment initiationGuideline recommendationsThyroid surgeryClaims databaseFill dateMean ageHormone valuesLevothyroxine preparationsMore pharmaciesPractice guidelinesAdditional studiesGeneric preparationsNational dataAmerican adultsPatientsRegression analysis
2021
Levothyroxine Use in the United States, 2008-2018
Brito JP, Ross JS, Kawkgi O, Maraka S, Deng Y, Shah ND, Lipska KJ. Levothyroxine Use in the United States, 2008-2018. JAMA Internal Medicine 2021, 181: 1402-1405. PMID: 34152370, PMCID: PMC8218227, DOI: 10.1001/jamainternmed.2021.2686.Peer-Reviewed Original ResearchCardiovascular outcomes and rates of fractures and falls among patients with brand-name versus generic L-thyroxine use
Brito JP, Ross JS, Deng Y, Sangaralingham L, Graham DJ, Qiang Y, Wang Z, Yao X, Zhao L, Smallridge RC, Bernet V, Shah ND, Lipska KJ. Cardiovascular outcomes and rates of fractures and falls among patients with brand-name versus generic L-thyroxine use. Endocrine 2021, 74: 592-602. PMID: 34089480, PMCID: PMC9210353, DOI: 10.1007/s12020-021-02779-x.Peer-Reviewed Original ResearchMeSH KeywordsAgedDrugs, GenericFemaleHumansLongitudinal StudiesRetrospective StudiesThyroid HormonesThyroxineConceptsCongestive heart failureRate of fracturesCardiovascular outcomesL-thyroxineRate of fallHeart failureHip fractureAtrial fibrillationMyocardial infarctionNational administrative claims databasePropensity-matched patientsAdministrative claims databaseRate of hospitalizationMIU/L.Main outcome measuresSignificant differencesDose subgroupsHospitalization ratesClaims databaseThyroid cancerInpatient settingBaseline thyroidHormone levelsOutcome measuresPatients
2019
Generic and Brand-Name Thyroid Hormone Drug Use Among Commercially Insured and Medicare Beneficiaries, 2007 Through 2016
Ross JS, Rohde S, Sangaralingham L, Brito JP, Choi L, Dutcher SK, Graham DJ, Jenkins MR, Lipska KJ, Mendoza M, Qiang Y, Wang Z, Wu Y, Yao X, Shah ND. Generic and Brand-Name Thyroid Hormone Drug Use Among Commercially Insured and Medicare Beneficiaries, 2007 Through 2016. The Journal Of Clinical Endocrinology & Metabolism 2019, 104: 2305-2314. PMID: 30690529, DOI: 10.1210/jc.2018-02197.Peer-Reviewed Original ResearchConceptsBrand-name useDrug useMedicare AdvantageThyroid hormone replacement therapyLarge administrative claims databaseBeneficiary populationAdministrative claims databaseHormone replacement therapyCertain patient characteristicsMedicare Part DPrescriber specialtyPatient characteristicsPrescriber characteristicsClaims databaseReplacement therapyGeneric levothyroxineWhite raceHealth plansOlder adultsHormone drugsInsurance coverageProduct useLevothyroxineNational dataPart D