Baseline neuropsychiatric symptoms and the risk of incident mild cognitive impairment

A population-based study

Yonas Endale Geda, Rosebud O Roberts, Michelle M Mielke, David S Knopman, Teresa J H Christianson, Vernon S. Pankratz, Bradley F Boeve, Ondřej Sochor, Eric George Tangalos, Ronald Carl Petersen, Walter A Rocca

Research output: Contribution to journalArticle

106 Citations (Scopus)

Abstract

Objective: The authors conducted a prospective cohort study to estimate the risk of incident mild cognitive impairment in cognitively normal elderly (aged $70 years) individuals with or without neuropsychiatric symptoms at baseline. The research was conducted in the setting of the populationbased Mayo Clinic Study of Aging. Method: A classification of normal cognitive aging, mild cognitive impairment, and dementia was adjudicated by an expert consensus panel based on published criteria.Hazard ratios and 95% confidence intervals were computed using Cox proportional hazardsmodel,with age as a time scale. Baseline Neuropsychiatric Inventory Questionnaire data were available for 1,587 cognitively normal persons who underwent at least one follow-up visit. Results: The cohortwas followed to incident mild cognitive impairment (N=365) or censoring variables (N=179) for a median of 5 years. Agitation (hazard ratio=3.06, 95% CI=1.89-4.93), apathy (hazard ratio=2.26, 95%CI=1.49-3.41), anxiety (hazard ratio=1.87, 95% CI=1.28-2.73), irritability (hazard ratio=1.84, 95% CI=1.31-2.58), and depression (hazard ratio=1.63, 95% CI=1.23-2.16), observed initially, increased risk for later mild cognitive impairment. Delusion and hallucination did not. A secondary analysis, limited in significance by the small number of study participants, showed that euphoria, disinhibition, and nighttime behaviors were significant predictors of nonamnestic mild cognitive impairment but not amnestic mild cognitive impairment. By contrast, depression predicted amnestic mild cognitive impairment (hazard ratio=1.74, 95% CI=1.22-2.47) but not nonamnesticmild cognitive impairment. Conclusions: An increased incidence of mild cognitive impairment was observed in community-dwelling elderly adults who had nonpsychotic psychiatric symptoms at baseline. These baseline psychiatric symptoms were of similar or greater magnitude as biomarkers (genetic and structural MRI) in increasing the risk of incident mild cognitive impairment.

Original languageEnglish (US)
Pages (from-to)572-581
Number of pages10
JournalAmerican Journal of Psychiatry
Volume171
Issue number5
DOIs
StatePublished - May 1 2014

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Population
Psychiatry
Cognitive Dysfunction
Mild Cognitive Impairment
Depression
Independent Living
Apathy
Delusions
Hallucinations
Hazard
Dementia
Consensus
Cohort Studies
Anxiety
Biomarkers
Prospective Studies
Confidence Intervals
Equipment and Supplies
Incidence
Research

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Arts and Humanities (miscellaneous)

Cite this

Baseline neuropsychiatric symptoms and the risk of incident mild cognitive impairment : A population-based study. / Geda, Yonas Endale; Roberts, Rosebud O; Mielke, Michelle M; Knopman, David S; Christianson, Teresa J H; Pankratz, Vernon S.; Boeve, Bradley F; Sochor, Ondřej; Tangalos, Eric George; Petersen, Ronald Carl; Rocca, Walter A.

In: American Journal of Psychiatry, Vol. 171, No. 5, 01.05.2014, p. 572-581.

Research output: Contribution to journalArticle

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AU - Christianson, Teresa J H

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