Evidence map›Paper›PMID 33283167›Full record

ReviewJournal of Alzheimer's disease reports2020

Distinct Cognitive Trajectories in Late Life and Associated Predictors and Outcomes: A Systematic Review.

Zimu Wu, Aung Zaw Zaw Phyo, Tagrid Al-Harbi, Robyn L Woods, Joanne Ryan

Abstract readReview
In one paragraph

Review in Journal of Alzheimer's disease reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

52 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  4. Dynamic frailty exposure and cognitive aging trajectories: A multicohort study.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2026
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  14. Cognitive trajectories in older adults and associated mortality and predictors.Social psychiatry and psychiatric epidemiology · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Zimu WuSchool of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia.
Aung Zaw Zaw PhyoSchool of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia.
Tagrid Al-HarbiSchool of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia.
Robyn L WoodsSchool of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia.
Joanne RyanSchool of Public Health and Preventive Medicine, Monash University, Melbourne, VIC, Australia.ORCID https://orcid.org/0000-0002-7039-6325

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundCognitive aging is a dynamic process in late life with significant heterogeneity across individuals.

objectiveTo review the evidence for latent classes of cognitive trajectories and to identify the associated predictors and outcomes.

methodsA systematic search was performed in MEDLINE and EMBASE for articles that identified two or more cognitive trajectories in adults. The study was conducted following the PRISMA statement.

resultsThirty-seven studies were included, ranging from 219 to 9,704 participants, with a mean age of 60 to 93.4 years. Most studies (

conclusionCognitive aging in late life is a dynamic process with significant inter-individual variability. However, it remains unclear whether similar patterns of cognitive aging are observed across all cognitive domains. Further research into unique factors which promote the maintenance of high-cognitive function is needed to help inform public policy.

Indexed as

Cognitive functionlongitudinalolder adultsprospectiverisk factorstrajectory

Identifiers

PMID33283167
PMCPMC7683100

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.