DementiaDementia, VascularAlzheimer DiseaseDementia, Multi-InfarctCognition DisordersLewy Body DiseaseNeuropsychological TestsAIDS Dementia ComplexCaregiversDisabled PersonsRisk FactorsNursing HomesGeriatric AssessmentCognitionBrainLongitudinal StudiesMild Cognitive ImpairmentAtrophyPrevalenceAgingCohort StudiesHomes for the AgedUnited StatesCross-Sectional StudiesQuestionnairesParkinson DiseaseIncidenceLewy BodiesMemory DisordersSeverity of Illness IndexInstitutionalizationMagnetic Resonance ImagingApolipoprotein E4Psychiatric Status Rating Scalestau ProteinsNeurofibrillary TanglesActivities of Daily LivingResidential FacilitiesFollow-Up StudiesPsychomotor AgitationFrontotemporal Lobar DegenerationProspective StudiesPick Disease of the BrainAge FactorsSex FactorsDisease ProgressionHealth Services for the AgedMental CompetencyBehavioral SymptomsHomeless PersonsWandering BehaviorEducational StatusAge DistributionDepressionCholinesterase InhibitorsReproducibility of ResultsHIV InfectionsSocioeconomic FactorsTemporal LobeAutopsyQuality of LifeTime FactorsComorbidityMental DisordersFrail ElderlyGreat BritainAge of OnsetGeriatric NursingResidence CharacteristicsSex DistributionInterviews as TopicPlaque, AmyloidAmyloid beta-PeptidesLogistic ModelsHealth StatusPsychometricsNootropic AgentsRetrospective StudiesAccidental FallsFrontal LobePopulation SurveillanceMentally Ill PersonsHome NursingMentally Disabled PersonsVisually Impaired PersonsPredictive Value of TestsAnalysis of VarianceCost of IllnessNetherlandsEnglandBehaviorGeriatricsCerebrovascular DisordersNeurodegenerative DiseasesDeliriumHallucinationsHealth SurveysRegression AnalysisRiskCase-Control Studies