Evidence map›Paper›PMID 32408882›Full record

ArticleAlzheimer's research & therapy2020

The meta-memory ratio: a new cohort-independent way to measure cognitive awareness in asymptomatic individuals at risk for Alzheimer's disease.

Geoffroy Gagliardi, Marion Houot, Federica Cacciamani, Marie-Odile Habert, Bruno Dubois, Stéphane Epelbaum, for ADNI; for the INSIGHT-preAD study group

Abstract read
In one paragraph

Article in Alzheimer's research & therapy, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing 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

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

  1. Pooled it
  2. Dementia risk factors and biomarkers in subjective cognitive decline: real world evidence from the monza brain health service.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2026
    Article
  3. Article
  4. Subjective cognitive decline: Memory complaints, cognitive awareness, and metacognition.Alzheimer's & dementia : the journal of the Alzheimer's Association · 2024
    Review
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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

7 authors.

Geoffroy GagliardiSorbonne Universités, UPMC Univ Paris 06, Inserm, CNRS, Institut du cerveau et de la moelle (ICM) - Hôpital Pitié-Salpêtrière, Paris, France. gagliardi.geoffroy@gmail.com.ORCID 0000-0002-2608-8456
Marion HouotAP-HP, Groupe Hospitalier Pitié-Salpêtrière, Département de Neurologie, Institut de la mémoire et de la maladie d'Alzheimer, Paris, France.
Federica CacciamaniSorbonne Universités, UPMC Univ Paris 06, Inserm, CNRS, Institut du cerveau et de la moelle (ICM) - Hôpital Pitié-Salpêtrière, Paris, France.
Marie-Odile HabertSorbonne Universités, CNRS, INSERM, Laboratoire d'Imagerie Biomédicale, Paris, France.
Bruno DuboisSorbonne Universités, UPMC Univ Paris 06, Inserm, CNRS, Institut du cerveau et de la moelle (ICM) - Hôpital Pitié-Salpêtrière, Paris, France.
Stéphane EpelbaumSorbonne Universités, UPMC Univ Paris 06, Inserm, CNRS, Institut du cerveau et de la moelle (ICM) - Hôpital Pitié-Salpêtrière, Paris, France.
for ADNI; for the INSIGHT-preAD study group

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundLack of awareness of cognitive decline (ACD) has been described at the preclinical and prodromal stages of Alzheimer's disease (AD). In this study, we introduced a meta-memory ratio (MMR) and explored how it is associated with neuroimaging AD biomarkers in asymptomatic individuals at risk for AD.

methodFour hundred forty-eight cognitively healthy participants from two cohorts of subjective memory complainers (INSIGHT-PreAD and ADNI) were included. Regression models were used to assess the impact of AD biomarkers on the MMR.

resultIn both cohorts, there was a significant quadratic effect of cerebral amyloidosis on the MMR value. In particular, participants had a high ACD up to the amyloid positivity threshold, above which a decrease of ACD was eventually observed as the amyloid load increased.

conclusionThis nonlinear evolution of ACD in very early AD must be taken into account in clinical care and for trial enrollment as well.

Indexed as

Alzheimer DiseaseCognitive DysfunctionMetacognitionAmyloidAmyloid beta-PeptidesBiomarkersHumansNeuroimagingAmyloidAmyloid beta-PeptidesBiomarkersAlzheimer’s diseaseAwarenessPreclinical

Identifiers

PMID32408882
PMCPMC7222501

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.