DeliriumDementiaDementia, VascularAlcohol Withdrawal DeliriumAlzheimer DiseaseCognition DisordersDementia, Multi-InfarctNeuropsychological TestsLewy Body DiseaseAIDS Dementia ComplexPsychomotor AgitationConfusionIntensive Care UnitsGeriatric AssessmentRisk FactorsCaregiversProspective StudiesNursing HomesPsychiatric Status Rating ScalesCognitionInstitutionalizationNursing DiagnosisHaloperidolNursing AssessmentCritical IllnessBrainDelirium, Dementia, Amnestic, Cognitive DisordersMild Cognitive ImpairmentAtrophyPostoperative ComplicationsBenzodiazepinesHomes for the AgedPsychoses, AlcoholicAntipsychotic AgentsCohort StudiesSeverity of Illness IndexHypnotics and SedativesGeriatric PsychiatryIntensive CareFrail ElderlyGeriatrics