DementiaDementia, VascularPrevalenceAlzheimer DiseaseDementia, Multi-InfarctLewy Body DiseaseAIDS Dementia ComplexCognition DisordersNeuropsychological TestsRisk FactorsCaregiversCross-Sectional StudiesAtrophyNursing HomesMild Cognitive ImpairmentBrainCognitionLongitudinal StudiesAge FactorsLewy BodiesCohort StudiesGeriatric AssessmentParkinson Diseasetau ProteinsSeverity of Illness IndexApolipoprotein E4Memory DisordersNeurofibrillary TanglesFrontotemporal Lobar DegenerationPick Disease of the BrainAgingMagnetic Resonance ImagingHomes for the AgedPsychiatric Status Rating ScalesPsychomotor AgitationIncidenceAge DistributionProspective StudiesBehavioral SymptomsQuestionnairesSex FactorsUnited StatesSex DistributionDisease ProgressionFollow-Up StudiesCholinesterase InhibitorsInstitutionalizationComorbidityActivities of Daily LivingAge of OnsetWandering BehaviorAutopsyRetrospective StudiesTemporal LobeEducational StatusLogistic ModelsResidential FacilitiesCase-Control StudiesPlaque, AmyloidAmyloid beta-PeptidesNootropic AgentsBrazilFrontal LobeHealth SurveysMental CompetencySocioeconomic FactorsDepressionNeurodegenerative DiseasesAphasia, Primary ProgressivePredictive Value of TestsChinaDeliriumCerebrovascular DisordersReproducibility of ResultsSensitivity and SpecificityGeriatric NursingDelirium, Dementia, Amnestic, Cognitive DisordersOdds RatioSupranuclear Palsy, ProgressiveTime FactorsMass ScreeningGenotypeRural PopulationHallucinationsIndiaApathyUrban PopulationBrief Psychiatric Rating ScaleBehaviorIndianaMental DisordersApolipoproteins EAssisted Living FacilitiesMemoryPopulation SurveillanceCerebral CortexAphasiaMemantineDNA Repeat ExpansionJapan