Evidence map›Paper›PMID 17161829›Full record

ArticleBiological psychiatry2007

Neuropsychological functioning in bipolar disorder and schizophrenia.

David J Schretlen, Nicola G Cascella, Stephen M Meyer, Lisle R Kingery, S Marc Testa, Cynthia A Munro, Ann E Pulver, Paul Rivkin, Vani A Rao, Catherine M Diaz-Asper and 3 more

Abstract readComparative Study
In one paragraph

Article in Biological psychiatry, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 97 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
97citing papers in PubMed, 2 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

97 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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37 more citing papers are in PubMed but not listed here.

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

13 authors.

David J SchretlenDepartment of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287-7218, and Olin Neuropsychiatric Research Center, Hartford Hospital Institute of Living, CT, USA. dschret@jhmi.edu
Nicola G Cascella
Stephen M Meyer
Lisle R Kingery
S Marc Testa
Cynthia A Munro
Ann E Pulver
Paul Rivkin
Vani A Rao
Catherine M Diaz-Asper
Faith B Dickerson
Robert H Yolken
Godfrey D Pearlson

Funding

ZINC AND CA EDTA THERAPY OF PLUMBISMM01RR000052 · NCRR · JOHNS HOPKINS UNIVERSITY · PI BELCHER, HAROLYN MILLICENT EDITH · 1985 to 2007
$37.3M
Quantitative Neuroimaging in Psychosis; DTI StudiesR37MH043775 · NIMH · HARTFORD HOSPITAL · PI PEARLSON, GODFREY D · 2005 to 2012
$4.8M
QUANTITATIVE STRUCTURAL NEUROIMAGING IN PSYCHOSISR01MH043775 · NIMH · JOHNS HOPKINS UNIVERSITY · PI PEARLSON, GODFREY D · 1988 to 2003
$2.4M
AGING, BRAIN IMAGING AND COGNITIONR01MH060504 · NIMH · JOHNS HOPKINS UNIVERSITY · PI PEARLSON, GODFREY D · 1999 to 2003
$1.9M
NCRR NIH HHS M01 RR000052NIMH NIH HHS MH43775NIMH NIH HHS MH60504NIMH NIH HHS R01 MH043775NIMH NIH HHS R01 MH060504NIMH NIH HHS R37 MH043775
6 · The paper itself

Abstract

backgroundSome patients with bipolar disorder (BD) demonstrate neuropsychological deficits even when stable. However, it remains unclear whether these differ qualitatively from those seen in schizophrenia (SZ).

methodsWe compared the nature and severity of cognitive deficits shown by 106 patients with SZ and 66 patients with BD to 316 healthy adults (NC). All participants completed a cognitive battery with 19 individual measures. After adjusting their test performance for age, sex, race, education, and estimated premorbid IQ, we derived regression-based T-scores for each measure and the six cognitive domains.

resultsBoth patient groups performed significantly worse than NCs on most (BD) or all (SZ) cognitive tests and domains. The resulting effect sizes ranged from .37 to 1.32 (mean=.97) across tests for SZ patients and from .23 to .87 (mean=.59) for BD patients. The Pearson correlation of these effect sizes was .71 (p<.001).

conclusionsPatients with bipolar disorder suffer from cognitive deficits that are milder but qualitatively similar to those of patients with schizophrenia. These findings support the notion that schizophrenia and bipolar disorder show greater phenotypic similarity in terms of the nature than severity of their neuropsychological deficits.

Indexed as

AdultBipolar DisorderCognition DisordersDiagnosis, DifferentialFemaleFunctional LateralityHumansMaleMiddle AgedNeuropsychological TestsPhenotypePsychomotor PerformanceSchizophreniaSchizophrenic PsychologySeverity of Illness Index

Identifiers

PMID17161829
PMCPMC2041824

What OpenQuestion holds

Textmetadata
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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.