title: Functional Status Predicts Awareness in Late-Onset but not in Early-Onset Alzheimer Disease.
abstract: This study aims to assess whether there are differences between the level of awareness in early-onset Alzheimer disease (EOAD) and late-onset Alzheimer disease (LOAD) and to test its association with quality of life (QOL). A consecutive series of 207 people with Alzheimer disease and their caregivers were selected from an outpatient unit. There were no significant differences in awareness. In LOAD, impairment on awareness was predicted by functional level (β = .37, P < .001), self ( P = .006), and informant report of QOL ( P = .010). The predictors of unawareness in EOAD were self ( P = .002) and informant report of QOL ( P < .001). There is a specific profile of functional deficits underlying awareness in people with LOAD. Additionally, reports of EOAD QOL were more strongly related to awareness than in people with LOAD.
authors.affiliation: 1 Center for Alzheimer's Disease, Institute of Psychiatry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Marcia C N
authors.identifier: http://orcid.org/0000-0001-6267-8202
authors.initials: MCN
authors.lastname: Dourado
authors.affiliation: 1 Center for Alzheimer's Disease, Institute of Psychiatry, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil.|2 Centre for Studies and Research on Aging, Institute Vital Brazil, Brazil.|3 Medicine School, State University of Rio de Janeiro, Rio de Janeiro, Brazil.|4 Postgraduate Program in Translational Biomedicine-Biotrans, Unigranrio University, Rio de Janeiro, Brazil.
authors.forename: Jerson
authors.initials: J
authors.lastname: Laks
authors.affiliation: 5 Department of Psychology, Pontifícia Universidade Católica do Rio de Janeiro, Rio de Janeiro, Brazil.|6 Department of Psychology, Institute of Psychiatry, King's College London, London, United Kingdom.
authors.forename: Daniel
authors.initials: D
authors.lastname: Mograbi
keywords: Alzheimer disease; awareness of disease; early-onset dementia; functionality; late-onset dementia; quality of life