Evidence map›Paper›PMID 24173295›Full record

ArticleEuropean archives of psychiatry and clinical neuroscience2014

Cluster analysis of cognitive deficits may mark heterogeneity in schizophrenia in terms of outcome and response to treatment.

Elsa Gilbert, Chantal Mérette, Valérie Jomphe, Claudia Emond, Nancie Rouleau, Roch-Hugo Bouchard, Marc-André Roy, Thomas Paccalet, Michel Maziade

Open access · greenAbstract read
In one paragraph

Article in European archives of psychiatry and clinical neuroscience, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 32 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
32citing papers in PubMed, 3 pooled it
1.7field-weighted citation impact, top 17% 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

32 citing papers in PubMed, 3 syntheses or guidelines pooled it, 63 citations in OpenAlex.

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  10. Cognitive and clinical profiles in first-episode psychosis and their relationship with functional outcomes.The British journal of psychiatry : the journal of mental science · 2026
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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

9 authors at 2 institutions in 1 country.

Elsa GilbertCentre de recherche, Institut universitaire en santé mentale de Québec, 2601, chemin de la Canardière (F-4500), Quebec, QC, G1J 2G3, Canada.
Chantal Mérette
Valérie Jomphe
Claudia Emond
Nancie Rouleau
Roch-Hugo Bouchard
Marc-André Roy
Thomas Paccalet
Michel Maziade
Institut Universitaire en Santé Mentale de Québec · CAUniversité Laval · CA

Funding

CIHR 74430-2CIHR MOP-114988CIHR MOP-119408CIHR MOP-74430
6 · The paper itself

Abstract

Cognitive impairments are central to schizophrenia, but their clinical utility for tagging heterogeneity in lifetime outcome and response to treatment is not conclusive. By exploiting four cognitive domains consistently showing large deficits in studies, we tested whether cluster analysis would define separate subsets of patients and then whether the disease heterogeneity marked by these clusters would be related to lifetime outcome and response to treatment. A total of 112 schizophrenia patients completed a neuropsychological evaluation. The PANSS, GAF-S and GAF-F were rated at the onset and endpoint of the illness trajectory. A blind judgment of the lifetime response to treatment was made. The first cluster presented near-normal cognitive performance. Two other clusters of severely impaired patients were identified: one generally impaired in the four cognitive domains and another selectively impaired in visual episodic memory and processing speed, each relating to a different lifetime evolution of disease and treatment response. Although the two impaired clusters were clinically indistinguishable in symptom severity and functioning at disease onset, patients with selective cognitive impairments demonstrated better improvement at outcome, whereas the generally impaired patients were more likely to be treatment refractory. The findings have implications for the management of patients and for clinical trials since particular combinations of cognitive deficits in patients would influence their treatment response.

Indexed as

Cluster AnalysisAdultAntipsychotic AgentsAttentionCognition DisordersExecutive FunctionFemaleHumansMaleMiddle AgedNeuropsychological TestsPsychiatric Status Rating ScalesPsychomotor PerformanceSchizophreniaTreatment OutcomeYoung AdultAntipsychotic Agents

Identifiers

PMID24173295
PMCPMC5025284
OpenAlexW2000209515

What OpenQuestion holds

Textmetadata
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.