2025
Modelling longitudinal cognitive test data with ceiling effects and left skewness
Grigorova D, Palejev D, Gueorguieva R, Initiative F. Modelling longitudinal cognitive test data with ceiling effects and left skewness. Frontiers In Applied Mathematics And Statistics 2025, 11: 1617381. DOI: 10.3389/fams.2025.1617381.Peer-Reviewed Original ResearchMini Mental State ExaminationCognitive test dataOlder individualsMini Mental State Examination scoreSubjective memory concernsCognitive performanceMental State ExaminationAlzheimer's Disease Neuroimaging Initiative studyMild cognitive impairmentState ExaminationCeiling effectsMemory concernsSteep cognitive declineRandom interceptEffect estimatesAlzheimer's diseaseBayesian information criterionCognitive testsBaseline individualCognitive declineCognitive impairmentDiagnostic groupsInitiative studyTwo-year periodYoung individuals
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
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