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Alzheimer's Research & Therapy
Published in: Alzheimer's Research & Therapy 1/2016

Open Access 01-12-2016 | Research

A longitudinal study of anxiety and cognitive decline in dementia with Lewy bodies and Alzheimer’s disease

Authors: Monica H. Breitve, Minna J. Hynninen, Kolbjørn Brønnick, Luiza J. Chwiszczuk, Bjørn H. Auestad, Dag Aarsland, Arvid Rongve

Published in: Alzheimer's Research & Therapy | Issue 1/2016

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Abstract

Background

Anxiety in dementia is common but not well studied. We studied the associations of anxiety longitudinally in Alzheimer’s disease (AD) and dementia with Lewy bodies (DLB).

Methods

In total, 194 patients with a first-time diagnosis of dementia were included (n = 122 patients with AD, n = 72 patients with DLB). Caregivers rated the patients’ anxiety using the Neuropsychiatric Inventory, and self-reported anxiety was assessed with the anxiety and tension items on the Montgomery–Åsberg Depression Rating Scale. The Mini Mental State Examination was used to assess cognitive outcome, and the Clinical Dementia Rating (CDR)-Global and CDR boxes were used for dementia severity. Linear mixed effects models were used for longitudinal analysis.

Results

Neither in the total sample nor in AD or DLB was caregiver-rated anxiety significantly associated with cognitive decline or dementia severity over a 4-year period. However, in patients with DLB, self-reported anxiety was associated with a slower cognitive decline than in patients with AD. No support was found for patients with DLB with clinical anxiety having a faster decline than patients with DLB without clinical anxiety. Over the course of 4 years, the level of anxiety declined in DLB and increased in AD.

Conclusions

Anxiety does not seem to be an important factor for the rate of cognitive decline or dementia severity over time in patients with a first-time diagnosis of dementia. Further research into anxiety in dementia is needed.
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Metadata
Title
A longitudinal study of anxiety and cognitive decline in dementia with Lewy bodies and Alzheimer’s disease
Authors
Monica H. Breitve
Minna J. Hynninen
Kolbjørn Brønnick
Luiza J. Chwiszczuk
Bjørn H. Auestad
Dag Aarsland
Arvid Rongve
Publication date
01-12-2016
Publisher
BioMed Central
Published in
Alzheimer's Research & Therapy / Issue 1/2016
Electronic ISSN: 1758-9193
DOI
https://doi.org/10.1186/s13195-016-0171-4

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