Premorbid IQ varies across different definitions of schizophrenia

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning

Standard

Premorbid IQ varies across different definitions of schizophrenia. / Urfer Parnas, Annick; Jansson, Lennart; Handest, Peter; Nielsen, Jan; Sæbye, Ditte; Parnas, Josef.

I: World Psychiatry, Bind 6, Nr. 1, 01.02.2007, s. 38-41.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning

Harvard

Urfer Parnas, A, Jansson, L, Handest, P, Nielsen, J, Sæbye, D & Parnas, J 2007, 'Premorbid IQ varies across different definitions of schizophrenia', World Psychiatry, bind 6, nr. 1, s. 38-41.

APA

Urfer Parnas, A., Jansson, L., Handest, P., Nielsen, J., Sæbye, D., & Parnas, J. (2007). Premorbid IQ varies across different definitions of schizophrenia. World Psychiatry, 6(1), 38-41.

Vancouver

Urfer Parnas A, Jansson L, Handest P, Nielsen J, Sæbye D, Parnas J. Premorbid IQ varies across different definitions of schizophrenia. World Psychiatry. 2007 feb. 1;6(1):38-41.

Author

Urfer Parnas, Annick ; Jansson, Lennart ; Handest, Peter ; Nielsen, Jan ; Sæbye, Ditte ; Parnas, Josef. / Premorbid IQ varies across different definitions of schizophrenia. I: World Psychiatry. 2007 ; Bind 6, Nr. 1. s. 38-41.

Bibtex

@article{a85b6012c76a4e90abf0748248da9aca,
title = "Premorbid IQ varies across different definitions of schizophrenia",
abstract = "The nature of the association between IQ and schizophrenia is still unclear. So far no study addressed this issue in relation to the breadth or scope of the very concept of schizophrenia. We examined the premorbid IQ in a polydiagnostic study with four classifications of schizophrenia: ICD-8/9, ICD-10, St. Louis and Flexible System-Wide. Only the ICD-10 schizophrenia patients exhibited a significantly lower premorbid IQ. There were suggestive differences between the four examined systems as well as between the ICD-10 paranoid and non-paranoid subtypes. Exploration of crucial diagnostic features of schizophrenia in relation to IQ revealed associations between low premorbid IQ and hallucinations as well as negative symptoms. It is concluded that premorbid IQ varies across different definitions of schizophrenia.",
author = "{Urfer Parnas}, Annick and Lennart Jansson and Peter Handest and Jan Nielsen and Ditte S{\ae}bye and Josef Parnas",
year = "2007",
month = feb,
day = "1",
language = "English",
volume = "6",
pages = "38--41",
journal = "World Psychiatry",
issn = "1723-8617",
publisher = "Wiley",
number = "1",

}

RIS

TY - JOUR

T1 - Premorbid IQ varies across different definitions of schizophrenia

AU - Urfer Parnas, Annick

AU - Jansson, Lennart

AU - Handest, Peter

AU - Nielsen, Jan

AU - Sæbye, Ditte

AU - Parnas, Josef

PY - 2007/2/1

Y1 - 2007/2/1

N2 - The nature of the association between IQ and schizophrenia is still unclear. So far no study addressed this issue in relation to the breadth or scope of the very concept of schizophrenia. We examined the premorbid IQ in a polydiagnostic study with four classifications of schizophrenia: ICD-8/9, ICD-10, St. Louis and Flexible System-Wide. Only the ICD-10 schizophrenia patients exhibited a significantly lower premorbid IQ. There were suggestive differences between the four examined systems as well as between the ICD-10 paranoid and non-paranoid subtypes. Exploration of crucial diagnostic features of schizophrenia in relation to IQ revealed associations between low premorbid IQ and hallucinations as well as negative symptoms. It is concluded that premorbid IQ varies across different definitions of schizophrenia.

AB - The nature of the association between IQ and schizophrenia is still unclear. So far no study addressed this issue in relation to the breadth or scope of the very concept of schizophrenia. We examined the premorbid IQ in a polydiagnostic study with four classifications of schizophrenia: ICD-8/9, ICD-10, St. Louis and Flexible System-Wide. Only the ICD-10 schizophrenia patients exhibited a significantly lower premorbid IQ. There were suggestive differences between the four examined systems as well as between the ICD-10 paranoid and non-paranoid subtypes. Exploration of crucial diagnostic features of schizophrenia in relation to IQ revealed associations between low premorbid IQ and hallucinations as well as negative symptoms. It is concluded that premorbid IQ varies across different definitions of schizophrenia.

M3 - Journal article

VL - 6

SP - 38

EP - 41

JO - World Psychiatry

JF - World Psychiatry

SN - 1723-8617

IS - 1

ER -

ID: 34118147