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Development and psychometric properties of the Emotional State Questionnaire: a self-report questionnaire for depression and anxiety
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1999 (English)In: Nordic Journal of Psychiatry, ISSN 0803-9488, E-ISSN 1502-4725, Vol. 53, no 6, 443-449 p.Article in journal (Refereed) Published
Abstract [en]

Anxiety and depression are dimensions of emotional state that can be validly assessed with self-report measures. This article introduces a new self-report questionnaire for depression and anxiety (Emotional State Questionnaire (EST-Q)) and presents data on its reliability and validity. The items of the EST-Q were derived from diagnostic criteria of DSM-IV and ICD-10. Thirty-three items were rated on a five-point frequency scale. The questionnaire was administered to 194 inpatients with depressive and anxiety disorders and to a population sample of 479 subjects. According to the results of factor analysis, five subscales were formed: Depression, Anxiety, Agoraphobia-Panic, Fatigue, and Insomnia. EST-Q and subscales showed acceptable internal consistency (alpha = 0.69-0.88). Significant differences in subscales between patients and population and across diagnostic groups confirmed the discriminant validity of the instrument. Depression, Anxiety, and Agoraphobia-Panic subscales distinguished corresponding diagnostic groups. Fatigue and Insomnia appeared to assess nonspecific psychopathology dimensions characteristic of several psychiatric disorders.

Place, publisher, year, edition, pages
1999. Vol. 53, no 6, 443-449 p.
Keyword [en]
agoraphobia, anxiety, depression, questionnaires
National Category
Psychiatry
Identifiers
URN: urn:nbn:se:sh:diva-9667ISI: 000084918600008OAI: oai:DiVA.org:sh-9667DiVA: diva2:428381
Available from: 2011-06-30 Created: 2011-06-30 Last updated: 2016-10-10Bibliographically approved

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Leinsalu, Mall
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