Evidence map›Paper›PMID 33521231›Full record

ArticleAlzheimer's & dementia (Amsterdam, Netherlands)2020

Commentary: Composite cognitive and functional measures for early stage Alzheimer's disease trials.

John E Harrison

Abstract read
In one paragraph

Article in Alzheimer's & dementia (Amsterdam, Netherlands), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–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

4 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Article
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

1 author.

John E HarrisonMetis Cognition Ltd, Park House Kilmington Common Wiltshire UK.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In this commentary I consider the issues raised in Schneider and Goldberg's review of composite cognitive and functional measures. I find much to agree with in their commentary and especially their concerns regarding satisfactory psychometric validation of composite measures. I endorse also their provision for analysis by cognitive domain, backed by the use of statistical methods for grouping test variables. The authors helpfully mention the possibility that treatment effects may be peculiar to specific domains of cognitive function. I develop this view and argue for exploratory studies of new therapeutic interventions to include broad assessments of the cognitive domains known to be compromised in early Alzheimer's disease. I suggest that the results of exploratory studies be used to help identify target domains for confirmatory studies. Finally, I note that computerized cognitive composite assessments have often been validated in the fashion that the authors recommend for composite measures.

Identifiers

PMID33521231
PMCPMC7819351

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Registered trials

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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.