Exploring cognitive heterogeneity in first-episode psychosis: What cluster analysis can reveal.
Identifieur interne : 001D75 ( Main/Exploration ); précédent : 001D74; suivant : 001D76Exploring cognitive heterogeneity in first-episode psychosis: What cluster analysis can reveal.
Auteurs : Maree P. Reser [Australie] ; Kelly A. Allott [Australie] ; E In Killackey [Australie] ; John Farhall [Australie] ; Susan M. Cotton [Australie]Source :
- Psychiatry research [ 1872-7123 ] ; 2015.
Descripteurs français
- KwdFr :
- Adolescent (MeSH), Adulte (MeSH), Analyse de regroupements (MeSH), Attention (MeSH), Cognition (MeSH), Femelle (MeSH), Humains (MeSH), Jeune adulte (MeSH), Mâle (MeSH), Mémoire à court terme (MeSH), Psychologie des schizophrènes (MeSH), Troubles psychotiques (psychologie), Études transversales (MeSH).
- MESH :
English descriptors
- KwdEn :
- MESH :
Abstract
Variable outcomes in first-episode psychosis (FEP) are partly attributable to heterogeneity in cognitive functioning. To aid identification of those likely to have poorer or better outcomes, we examined whether purported cognitive profiles identified through use of cluster analysis in chronic schizophrenia were evident in FEP. We also aimed to assess whether there was a relationship between cognitive profile and factors independent of the solution, providing external validation that the cognitive profiles represented distinct subgroups. Ward's method hierarchical cluster analysis, verified by a k-means cluster solution, was performed using data obtained from a cognitive test battery administered to 128 participants aged 15-25 years. Four cognitive profiles were identified. A continuity element was evident; participants in cluster four were more cognitively impaired compared to participants in cluster three, who appeared more cognitively intact. Clusters one and two were distinguishable across measures of attention and working memory and visual recognition memory, most likely reflecting sample specific patterns of deficit. Participants in cluster four had significantly lower premorbid and current IQ and higher negative symptoms compared to participants in cluster three. The distinct levels and patterns of cognition found in chronic schizophrenia cohorts are also evident across diagnostic categories in FEP.
DOI: 10.1016/j.psychres.2015.07.084
PubMed: 26272022
Affiliations:
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Allott</name><affiliation wicri:level="4"><nlm:affiliation>Orygen, The National Centre of Excellence in Youth Mental Health, 35 Poplar Road, Parkville, Victoria 3053, Australia; Centre for Youth Mental Health, The University of Melbourne, Victoria 3010, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Orygen, The National Centre of Excellence in Youth Mental Health, 35 Poplar Road, Parkville, Victoria 3053, Australia; Centre for Youth Mental Health, The University of Melbourne, Victoria 3010</wicri:regionArea><orgName type="university">Université de Melbourne</orgName><placeName><settlement type="city">Melbourne</settlement><region type="état">Victoria (État)</region></placeName></affiliation></author><author><name sortKey="Killackey, E In" sort="Killackey, E In" uniqKey="Killackey E" first="E In" last="Killackey">E In Killackey</name><affiliation wicri:level="4"><nlm:affiliation>Orygen, The National Centre of Excellence in Youth Mental Health, 35 Poplar Road, Parkville, Victoria 3053, Australia; Centre for Youth Mental Health, The University of Melbourne, Victoria 3010, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Orygen, The National Centre of Excellence in Youth Mental Health, 35 Poplar Road, Parkville, Victoria 3053, Australia; Centre for Youth Mental Health, The University of Melbourne, Victoria 3010</wicri:regionArea><orgName type="university">Université de Melbourne</orgName><placeName><settlement type="city">Melbourne</settlement><region type="état">Victoria (État)</region></placeName></affiliation></author><author><name sortKey="Farhall, John" sort="Farhall, John" uniqKey="Farhall J" first="John" last="Farhall">John Farhall</name><affiliation wicri:level="1"><nlm:affiliation>Department of Psychology and Counselling, La Trobe University, Melbourne, Victoria 3086, Australia.</nlm:affiliation><country xml:lang="fr">Australie</country><wicri:regionArea>Department of Psychology and Counselling, La Trobe University, Melbourne, Victoria 3086</wicri:regionArea><wicri:noRegion>Victoria 3086</wicri:noRegion></affiliation></author><author><name sortKey="Cotton, Susan M" sort="Cotton, Susan M" uniqKey="Cotton S" first="Susan M" last="Cotton">Susan M. Cotton</name><affiliation wicri:level="4"><nlm:affiliation>Orygen, The National Centre of Excellence in Youth Mental Health, 35 Poplar Road, Parkville, Victoria 3053, Australia; Centre for Youth Mental Health, The University of Melbourne, Victoria 3010, Australia. 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To aid identification of those likely to have poorer or better outcomes, we examined whether purported cognitive profiles identified through use of cluster analysis in chronic schizophrenia were evident in FEP. We also aimed to assess whether there was a relationship between cognitive profile and factors independent of the solution, providing external validation that the cognitive profiles represented distinct subgroups. Ward's method hierarchical cluster analysis, verified by a k-means cluster solution, was performed using data obtained from a cognitive test battery administered to 128 participants aged 15-25 years. Four cognitive profiles were identified. A continuity element was evident; participants in cluster four were more cognitively impaired compared to participants in cluster three, who appeared more cognitively intact. Clusters one and two were distinguishable across measures of attention and working memory and visual recognition memory, most likely reflecting sample specific patterns of deficit. Participants in cluster four had significantly lower premorbid and current IQ and higher negative symptoms compared to participants in cluster three. The distinct levels and patterns of cognition found in chronic schizophrenia cohorts are also evident across diagnostic categories in FEP. </div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" IndexingMethod="Curated" Owner="NLM"><PMID Version="1">26272022</PMID><DateCompleted><Year>2016</Year><Month>05</Month><Day>16</Day></DateCompleted><DateRevised><Year>2018</Year><Month>12</Month><Day>02</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1872-7123</ISSN><JournalIssue CitedMedium="Internet"><Volume>229</Volume><Issue>3</Issue><PubDate><Year>2015</Year><Month>Oct</Month><Day>30</Day></PubDate></JournalIssue><Title>Psychiatry research</Title><ISOAbbreviation>Psychiatry Res</ISOAbbreviation></Journal><ArticleTitle>Exploring cognitive heterogeneity in first-episode psychosis: What cluster analysis can reveal.</ArticleTitle><Pagination><MedlinePgn>819-27</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1016/j.psychres.2015.07.084</ELocationID><ELocationID EIdType="pii" ValidYN="Y">S0165-1781(15)00544-2</ELocationID><Abstract><AbstractText>Variable outcomes in first-episode psychosis (FEP) are partly attributable to heterogeneity in cognitive functioning. To aid identification of those likely to have poorer or better outcomes, we examined whether purported cognitive profiles identified through use of cluster analysis in chronic schizophrenia were evident in FEP. We also aimed to assess whether there was a relationship between cognitive profile and factors independent of the solution, providing external validation that the cognitive profiles represented distinct subgroups. Ward's method hierarchical cluster analysis, verified by a k-means cluster solution, was performed using data obtained from a cognitive test battery administered to 128 participants aged 15-25 years. Four cognitive profiles were identified. A continuity element was evident; participants in cluster four were more cognitively impaired compared to participants in cluster three, who appeared more cognitively intact. Clusters one and two were distinguishable across measures of attention and working memory and visual recognition memory, most likely reflecting sample specific patterns of deficit. Participants in cluster four had significantly lower premorbid and current IQ and higher negative symptoms compared to participants in cluster three. The distinct levels and patterns of cognition found in chronic schizophrenia cohorts are also evident across diagnostic categories in FEP. </AbstractText><CopyrightInformation>Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.</CopyrightInformation></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Reser</LastName><ForeName>Maree P</ForeName><Initials>MP</Initials><AffiliationInfo><Affiliation>Department of Psychology and Counselling, La Trobe University, Melbourne, Victoria 3086, Australia.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Allott</LastName><ForeName>Kelly A</ForeName><Initials>KA</Initials><AffiliationInfo><Affiliation>Orygen, The National Centre of Excellence in Youth Mental Health, 35 Poplar Road, Parkville, Victoria 3053, Australia; Centre for Youth Mental Health, The University of Melbourne, Victoria 3010, Australia.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Killackey</LastName><ForeName>Eóin</ForeName><Initials>E</Initials><AffiliationInfo><Affiliation>Orygen, The National Centre of Excellence in Youth Mental Health, 35 Poplar Road, Parkville, Victoria 3053, Australia; Centre for Youth Mental Health, The University of Melbourne, Victoria 3010, Australia.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Farhall</LastName><ForeName>John</ForeName><Initials>J</Initials><AffiliationInfo><Affiliation>Department of Psychology and Counselling, La Trobe University, Melbourne, Victoria 3086, Australia.</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Cotton</LastName><ForeName>Susan M</ForeName><Initials>SM</Initials><AffiliationInfo><Affiliation>Orygen, The National Centre of Excellence in Youth Mental Health, 35 Poplar Road, Parkville, Victoria 3053, Australia; Centre for Youth Mental Health, The University of Melbourne, Victoria 3010, Australia. Electronic address: smcotton@unimelb.edu.au.</Affiliation></AffiliationInfo></Author></AuthorList><Language>eng</Language><PublicationTypeList><PublicationType UI="D016428">Journal Article</PublicationType><PublicationType UI="D016449">Randomized Controlled Trial</PublicationType><PublicationType UI="D013485">Research Support, Non-U.S. Gov't</PublicationType></PublicationTypeList><ArticleDate DateType="Electronic"><Year>2015</Year><Month>07</Month><Day>31</Day></ArticleDate></Article><MedlineJournalInfo><Country>Ireland</Country><MedlineTA>Psychiatry Res</MedlineTA><NlmUniqueID>7911385</NlmUniqueID><ISSNLinking>0165-1781</ISSNLinking></MedlineJournalInfo><CitationSubset>IM</CitationSubset><MeshHeadingList><MeshHeading><DescriptorName UI="D000293" MajorTopicYN="N">Adolescent</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D000328" MajorTopicYN="N">Adult</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D001288" MajorTopicYN="N">Attention</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D016000" MajorTopicYN="N">Cluster Analysis</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D003071" MajorTopicYN="Y">Cognition</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D003430" MajorTopicYN="N">Cross-Sectional Studies</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D005260" MajorTopicYN="N">Female</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D006801" MajorTopicYN="N">Humans</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D008297" MajorTopicYN="N">Male</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D008570" MajorTopicYN="N">Memory, Short-Term</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D011618" MajorTopicYN="N">Psychotic Disorders</DescriptorName><QualifierName UI="Q000523" MajorTopicYN="Y">psychology</QualifierName></MeshHeading><MeshHeading><DescriptorName UI="D012565" MajorTopicYN="Y">Schizophrenic Psychology</DescriptorName></MeshHeading><MeshHeading><DescriptorName UI="D055815" MajorTopicYN="N">Young Adult</DescriptorName></MeshHeading></MeshHeadingList><KeywordList Owner="NOTNLM"><Keyword MajorTopicYN="N">Cognitive impairment</Keyword><Keyword MajorTopicYN="N">Cognitive subtypes</Keyword></KeywordList></MedlineCitation><PubmedData><History><PubMedPubDate PubStatus="received"><Year>2014</Year><Month>09</Month><Day>10</Day></PubMedPubDate><PubMedPubDate PubStatus="revised"><Year>2015</Year><Month>07</Month><Day>25</Day></PubMedPubDate><PubMedPubDate PubStatus="accepted"><Year>2015</Year><Month>07</Month><Day>30</Day></PubMedPubDate><PubMedPubDate PubStatus="entrez"><Year>2015</Year><Month>8</Month><Day>15</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="pubmed"><Year>2015</Year><Month>8</Month><Day>15</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate><PubMedPubDate PubStatus="medline"><Year>2016</Year><Month>5</Month><Day>18</Day><Hour>6</Hour><Minute>0</Minute></PubMedPubDate></History><PublicationStatus>ppublish</PublicationStatus><ArticleIdList><ArticleId IdType="pubmed">26272022</ArticleId><ArticleId IdType="pii">S0165-1781(15)00544-2</ArticleId><ArticleId IdType="doi">10.1016/j.psychres.2015.07.084</ArticleId></ArticleIdList></PubmedData></pubmed><affiliations><list><country><li>Australie</li></country><region><li>Victoria (État)</li></region><settlement><li>Melbourne</li></settlement><orgName><li>Université de Melbourne</li></orgName></list><tree><country name="Australie"><noRegion><name sortKey="Reser, Maree P" sort="Reser, Maree P" uniqKey="Reser M" first="Maree P" last="Reser">Maree P. Reser</name></noRegion><name sortKey="Allott, Kelly A" sort="Allott, Kelly A" uniqKey="Allott K" first="Kelly A" last="Allott">Kelly A. Allott</name><name sortKey="Cotton, Susan M" sort="Cotton, Susan M" uniqKey="Cotton S" first="Susan M" last="Cotton">Susan M. Cotton</name><name sortKey="Farhall, John" sort="Farhall, John" uniqKey="Farhall J" first="John" last="Farhall">John Farhall</name><name sortKey="Killackey, E In" sort="Killackey, E In" uniqKey="Killackey E" first="E In" last="Killackey">E In Killackey</name></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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