Risk factors for behavioral abnormalities in mild cognitive impairment and mild alzheimer's disease

Liana G. Apostolova, Li Jie Di, Erin L. Duffy, Jenny Brook, David Elashoff, Chi Hong Tseng, Lynn Fairbanks, Jeffrey L. Cummings

Research output: Contribution to journalArticle

33 Scopus citations

Abstract

Background: Behavioral symptoms are common in both mild cognitive impairment (MCI) and Alzheimer's disease (AD). Methods: We analyzed the Neuropsychiatric Inventory Questionnaire data of 3,456 MCI and 2,641 mild AD National Alzheimer's Coordinating Center database participants. Using factor analysis and logistic regression we estimated the effects of age, sex, race, education, Mini-Mental State Examination, functional impairment, marital status and family history on the presence of behavioral symptoms. We also compared the observed prevalence of behavioral symptoms between amnestic and nonamnestic MCI. Results: Four factors were identified: affective behaviors (depression, apathy and anxiety); distress/tension behaviors (irritability and agitation); impulse control behaviors (disinhibition, elation and aberrant motor behavior), and psychotic behaviors (delusions and hallucinations). Male gender was significantly associated with all factors. Younger age was associated with a higher prevalence of distress/tension, impulse control and psychotic behaviors. Being married was protective against psychotic behaviors. Lower education was associated with the presence of distress/tension behaviors. Caucasians showed a higher prevalence of affective behaviors. Functional impairment was strongly associated with all behavioral abnormalities. Amnestic MCI patients had more elation and agitation relative to nonamnestic MCI patients. Conclusions: Younger age, male gender and greater functional impairment were associated with higher overall presence of behavioral abnormalities in MCI and mild AD. Marital status, lower education and race had an effect on selected behaviors.

Original languageEnglish (US)
Pages (from-to)315-326
Number of pages12
JournalDementia and Geriatric Cognitive Disorders
Volume37
Issue number5-6
DOIs
StatePublished - Jun 2014

Keywords

  • Alzheimer's disease
  • Behavior
  • Mild cognitive impairment
  • Neuropsychiatric symptoms

ASJC Scopus subject areas

  • Geriatrics and Gerontology
  • Cognitive Neuroscience
  • Psychiatry and Mental health

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    Apostolova, L. G., Di, L. J., Duffy, E. L., Brook, J., Elashoff, D., Tseng, C. H., Fairbanks, L., & Cummings, J. L. (2014). Risk factors for behavioral abnormalities in mild cognitive impairment and mild alzheimer's disease. Dementia and Geriatric Cognitive Disorders, 37(5-6), 315-326. https://doi.org/10.1159/000351009