2022
Models for Zero-Inflated and Overdispersed Correlated Count Data: An Application to Cigarette Use
Pittman B, Buta E, Garrison K, Gueorguieva R. Models for Zero-Inflated and Overdispersed Correlated Count Data: An Application to Cigarette Use. Nicotine & Tobacco Research 2022, 25: 996-1003. PMID: 36318799, PMCID: PMC10077942, DOI: 10.1093/ntr/ntac253.Peer-Reviewed Original ResearchMeSH KeywordsHumansLongitudinal StudiesModels, StatisticalNicotinePoisson DistributionTobaccoTobacco ProductsConceptsCorrelated count dataCount outcomesCount dataSubject-specific interpretationZero-InflatedIncorrect statistical inferenceStatistical inferenceCorrelated countsPoisson distributionOverdispersionModel assumptionsPoisson modelRandom effectsHurdle Poisson modelProper modelNegative binomial modelBinomial modelSuch dataAppropriate modelBest fitLarge varianceTobacco researchSuch outcomesModel fitTraining app
2016
Correlated probit analysis of repeatedly measured ordinal and continuous outcomes with application to the Health and Retirement Study
Grigorova D, Gueorguieva R. Correlated probit analysis of repeatedly measured ordinal and continuous outcomes with application to the Health and Retirement Study. Statistics In Medicine 2016, 35: 4202-4225. PMID: 27222058, DOI: 10.1002/sim.6982.Peer-Reviewed Original Research
2010
Differential changes in body mass index after retirement by occupation: hierarchical models
Gueorguieva R, Sindelar JL, Wu R, Gallo WT. Differential changes in body mass index after retirement by occupation: hierarchical models. International Journal Of Public Health 2010, 56: 111-116. PMID: 20625792, PMCID: PMC3154720, DOI: 10.1007/s00038-010-0166-z.Peer-Reviewed Original ResearchConceptsBMI trajectoriesBody mass indexBody mass index (BMI) patternsMass indexHealth habitsBlue-collar occupationsOlder individualsJob physical demandsOccupational classBlue-collar workersNational dataSignificant increaseDifferential changesWhite-collar occupationsPhysical demandsCollar workersSocioeconomic characteristics
2009
The Impact of Occupation on Self-Rated Health: Cross-Sectional and Longitudinal Evidence from the Health and Retirement Survey
Gueorguieva R, Sindelar JL, Falba TA, Fletcher JM, Keenan P, Wu R, Gallo WT. The Impact of Occupation on Self-Rated Health: Cross-Sectional and Longitudinal Evidence from the Health and Retirement Survey. The Journals Of Gerontology Series B 2009, 64B: 118-124. PMID: 19196689, PMCID: PMC2654983, DOI: 10.1093/geronb/gbn006.Peer-Reviewed Original ResearchConceptsSelf-reported healthOlder individualsSelf-reported health statusSignificant baseline differencesSelf-rated healthHealth habitsBaseline differencesOccupation-related differencesHealth statusHealth trajectoriesImpact of occupationKey covariatesStudy sampleSignificant differencesRetirement StudyHealthOccupational categoriesRetirement SurveyLongitudinal evidenceIndividual ageOccupational differencesIndividualsDifferences
2006
Joint analysis of repeatedly observed continuous and ordinal measures of disease severity
Gueorguieva RV, Sanacora G. Joint analysis of repeatedly observed continuous and ordinal measures of disease severity. Statistics In Medicine 2006, 25: 1307-1322. PMID: 16217846, DOI: 10.1002/sim.2270.Peer-Reviewed Original Research