TY - JOUR
T1 - Baseline neuropsychiatric symptoms and the risk of incident mild cognitive impairment
T2 - A population-based study
AU - Geda, Yonas E.
AU - Roberts, Rosebud O.
AU - Mielke, Michelle M.
AU - Knopman, David S.
AU - Christianson, Teresa J.H.
AU - Pankratz, Vernon S.
AU - Boeve, Bradley F.
AU - Sochor, Ondřej
AU - Tangalos, Eric G.
AU - Petersen, Ronald C.
AU - Rocca, Walter A.
PY - 2014/5/1
Y1 - 2014/5/1
N2 - 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.
AB - 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.
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U2 - 10.1176/appi.ajp.2014.13060821
DO - 10.1176/appi.ajp.2014.13060821
M3 - Article
C2 - 24700290
AN - SCOPUS:84899724518
SN - 0002-953X
VL - 171
SP - 572
EP - 581
JO - American Journal of Psychiatry
JF - American Journal of Psychiatry
IS - 5
ER -