Out of the box : moving from categories to dimensions in the phenomenology of depression and anxiety.

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Out of the box : moving from categories to dimensions in the phenomenology of depression and anxiety.

Title: Out of the box : moving from categories to dimensions in the phenomenology of depression and anxiety.
Author: Hollander-Gijsman, Margien Elisabeth den
Publisher: Department of Psychiatry, Faculty of Medicine / Leiden University Medical Center (LUMC), Leiden University
Issue Date: 2013-12-11
Keywords: Routine outcome monitoring
Dimensional psychopathology
Tripartite model
Depression
Anxiety
Psychiatric evaluation
Psychometrics
Self-report
Measurement
Outpatients
Questionnaires
Abstract: Research into the relation between psychopathology and etiological factors has not yet resulted in clear findings. One of the probable causes is that most researchers use the categorical DSM-IV Classification of mental disorders. A dimensional system has several advantages compared to categorical systems: comorbidity, lack of diagnostic agreement and arbitrary nature of used boundaries are no longer a problem. Our aim was to develop a model with dimensions that can adequately describe patients with mood- and anxiety disorders. This project used data collected through Routine Outcome Monitoring (ROM), a monitoring system for patient care. First, we validated a Dutch adaptation of an instrument based on the tripartite model. Next, we formulated an extension of this model with 5 dimensions. Consequently we presented a second model with 6 dimensions: feelings of worthlessness, fatigue, somatic arousal, anxious apprehension, phobic fear and tension. We used several analysis techniques to create a valid and reliable dimensional model. Each individual factor and the total of factors can be regarded as unidimensional measurement scales. This model can describe the clinical state of patients more specifically than the tripartite model, and can be used in subsequent research into etiological factors of psychopathology (e.g. endophenotype, genotype, trauma's, personality).
Description: Promotores: F.G. Zitman, N.J.A. van der Wee. Co-promotor: E. de Beurs
With summary in Dutch
Faculty: LUMC
Citation: Hollander-Gijsman, M.E. den. 2013, Doctoral thesis, Leiden University
Handle: http://hdl.handle.net/1887/22851
 

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