Evidence map›Paper›PMID 33451358›Full record

ReviewAlzheimer's research & therapy2021

Assessing individual-level change in dementia research: a review of methodologies.

Aja Louise Murray, Marlena Vollmer, Ian J Deary, Graciela Muniz-Terrera, Tom Booth

Open access · goldAbstract readReview
In one paragraph

Review in Alzheimer's research & therapy, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
1.1field-weighted citation impact, top 26% of its field
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

5 citing papers in PubMed, 8 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. 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

5 authors at 1 institution in 1 country.

Aja Louise MurrayDepartment of Psychology, University of Edinburgh, F17, 7 George Square, Edinburgh, EH8 9JZ, UK.
Marlena VollmerDepartment of Psychology, University of Edinburgh, F17, 7 George Square, Edinburgh, EH8 9JZ, UK.
Ian J DearyDepartment of Psychology, University of Edinburgh, F17, 7 George Square, Edinburgh, EH8 9JZ, UK.
Graciela Muniz-TerreraCentre for Clinical Brain Sciences, Centre for Dementia Prevention, University of Edinburgh, Edinburgh, UK.
Tom BoothDepartment of Psychology, University of Edinburgh, F17, 7 George Square, Edinburgh, EH8 9JZ, UK. Tom.booth@ed.ac.uk.ORCID 0000-0002-4235-1381
University of Edinburgh · GB

Funding

Medical Research Council G0700704Medical Research Council G1001245Medical Research Council MR/L023784/2Medical Research Council MR/M013111/1
6 · The paper itself

Abstract

backgroundWhether in the context of monitoring disease progression or in assessing the effects of interventions, a major challenge in dementia research is determining when an individual has undergone meaningful change in symptoms and other relevant outcomes such as cognitive test performance. The challenge lies in differentiating genuine improvement or deterioration from change in scores due to random and systematic error. BODY: In this review, we discuss the advantages and limitations of available methods for assessing individual-level change in the context of key challenges, including imperfect and differential reliability of scores, and practice effects. We discuss indices of reliable change and the use of composite and item response theory (IRT) scores.

conclusionWe conclude that IRT-based approaches hold particular promise because they have the flexibility to accommodate solutions to a wide range of issues that influence the accuracy of judgements of meaningful change. We close by discussing the practical implications of adopting IRT-based approaches.

Indexed as

DementiaDisease ProgressionHumansNeuropsychological TestsReproducibility of ResultsAlzheimer’sDementiaIndividual-level changeItem response theoryReliable change

Identifiers

PMID33451358
PMCPMC7811223
OpenAlexW3126056747

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

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.