Evidence map›Paper›PMID 27251676›Full record

ArticleJournal of neurology, neurosurgery, and psychiatry2016

Utility of testing for apraxia and associated features in dementia.

Samrah Ahmed, Ian Baker, Sian Thompson, Masud Husain, Christopher R Butler

Open access · hybridAbstract read
In one paragraph

Article in Journal of neurology, neurosurgery, and psychiatry, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
2.8field-weighted citation impact, top 10% 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

12 citing papers in PubMed, 40 citations in OpenAlex.

  1. Assessing Limb Apraxia in Quebec: Normative Study of the Brief Battery for the Evaluation of Praxis in Healthy French-Speaking Adults.Archives of clinical neuropsychology : the official journal of the National Academy of Neuropsychologists · 2026
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors at 3 institutions in 1 country.

Samrah AhmedNuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, UK.
Ian BakerRussell Cairns Unit, Oxford University Hospitals NHS Trust, John Radcliffe Hospital, Oxford, UK.
Sian ThompsonDepartment of Clinical Neurology, Oxford University Hospitals NHS Trust, Oxford, UK.
Masud HusainNuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, UK Department of Experimental Psychology, University of Oxford, John Radcliffe Hospital, Oxford, UK.
Christopher R ButlerNuffield Department of Clinical Neurosciences, University of Oxford, John Radcliffe Hospital, Oxford, UK.
John Radcliffe Hospital · GBOxford University Hospitals NHS Trust · GBUniversity of Oxford · GB

Funding

Medical Research Council MR/K010395/1Wellcome Trust
6 · The paper itself

Abstract

introductionExisting literature suggests that the presence or absence of apraxia and associated parietal deficits may be clinically relevant in differential diagnosis of dementia syndromes.

aimThis study investigated the profile of these features in Alzheimer's disease (AD) and frontotemporal dementia (FTD) spectrum disorders, at first presentation.

methodsRetrospective case note analysis was undertaken in 111 patients who presented to the Oxford Cognitive Disorders Clinic, Oxford, UK, including 29 amnestic AD, 12 posterior cortical atrophy (PCA), 12 logopenic primary progressive aphasia (lvPPA), 20 behavioural variant FTD (bvFTD), 7 non-fluent variant PPA (nfvPPA), 6 semantic variant PPA (svPPA) and 25 patients with subjective cognitive impairment (SCI). The clinical features of interest were: limb apraxia, apraxia of speech (AOS), and left parietal symptoms of dyslexia, dysgraphia, and dyscalculia.

resultsThe prevalence of limb apraxia was highest in PCA, amnestic AD, lvPPA and nfvPPA. AOS was only observed in nfvPPA. Associated parietal features were more prevalent in AD spectrum than FTD spectrum disorders. Group comparisons between key differential diagnostic challenges showed that lvPPA and nfvPPA could be significantly differentiated on the presence of left parietal features and AOS, and amnestic AD could be differentiated from bvFTD, svPPA and SCI by limb apraxia. Regression analysis showed that limb apraxia could successfully differentiate between AD and FTLD spectrum disorders with 83% accuracy. DISCUSSION: Disease-specific profiles of limb apraxia and associated deficits can be observed. FTD and AD spectrum disorders can be difficult to differentiate due to overlapping cognitive symptoms, and measures of apraxia, in particular, appear to be a promising discriminator.

Indexed as

AgedAlzheimer DiseaseApraxiasDiagnosis, DifferentialFemaleFollow-Up StudiesFrontotemporal DementiaHumansMaleMiddle AgedRetrospective Studies

Identifiers

PMID27251676
PMCPMC5099316
OpenAlexW2409627973

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.