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Article ; Online: Clinical characteristics of early-onset versus late-onset Alzheimer's disease: a systematic review and meta-analysis.

Seath, Paige / Macedo-Orrego, Luis Enrique / Velayudhan, Latha

International psychogeriatrics

2023  , Page(s) 1–17

Abstract: Objectives: A number of studies have compared Alzheimer's disease (AD), the commonest form of dementia, based on their age of onset, i.e. before the age of 65 years (early-onset AD, EO-AD) to those developing after 65 years of age (late-onset AD, LO-AD), ...

Abstract Objectives: A number of studies have compared Alzheimer's disease (AD), the commonest form of dementia, based on their age of onset, i.e. before the age of 65 years (early-onset AD, EO-AD) to those developing after 65 years of age (late-onset AD, LO-AD), but the differences are not clear. We performed a systematic review and meta-analysis to compare clinical characteristics between EO-AD and LO-AD.
Design, measurements, and participants: Medline, Embase, PsycINFO, and CINAHL databases were systematically searched for studies comparing time to diagnosis, cognitive scores, annual cognitive decline, activities of daily living (ADLs), neuropsychiatric symptoms (NPS), quality of life (QoL), and survival time for EO-AD and LO-AD patients.
Results: Forty-two studies were included (EO-AD participants
Conclusions: Our findings suggest that EO-AD differs from LO-AD in baseline cognition, cognitive decline, and survival time but otherwise has similar clinical characteristics to LO-AD. Larger studies using standardized questionnaires focusing on the clinical presentations are needed to better understand the impact of age of onset in AD.
Language English
Publishing date 2023-07-11
Publishing country England
Document type Journal Article ; Review
ZDB-ID 1038825-4
ISSN 1741-203X ; 1041-6102
ISSN (online) 1741-203X
ISSN 1041-6102
DOI 10.1017/S1041610223000509
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