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An empirical assessment of adjustment disorder as proposed for ICD-11 in a general population sample of Israel


Lorenz, Louisa; Hyland, Philip; Maercker, Andreas; Ben-Ezra, Menachem (2018). An empirical assessment of adjustment disorder as proposed for ICD-11 in a general population sample of Israel. Journal of Anxiety Disorders, 54:65-70.

Abstract

BACKGROUND: A new diagnostic concept of Adjustment Disorder (AjD) was proposed for inclusion in the International Classification of Diseases, 11th version (ICD-11). However, the symptom structure of AjD is poorly understood. The aim of the present study was to investigate the dimensionality of AjD as a stress-response syndrome.

METHODS: A general population sample of the Israeli population (N = 1003) completed the Adjustment Disorder - New Module 20 and the WHO-5 Wellbeing Scale. We compared seven alternative models of AjD using confirmatory factor analysis (CFA). A latent profile analysis (LPA) was performed to determine if subtypes of AjD were present. The performance of the unidimensional and multidimensional models of AjD were evaluated using regression analyses.

RESULTS: CFA results supported a unidimensional model of AjD. The LPA identified three quantitatively distinct classes (low, medium, and high) with no evidence of any subtypes of AjD. The criterion validity of AjD was superior when treated as unidimensional. AjD was associated with lower levels of psychological wellbeing (β = -.32, p < .001).

CONCLUSIONS: Our results suggest that AjD is better conceptualised as a unidimensional construct. Future work should focus on a reduction of required symptoms in order to improve clinical utility and validity of the diagnosis.

Abstract

BACKGROUND: A new diagnostic concept of Adjustment Disorder (AjD) was proposed for inclusion in the International Classification of Diseases, 11th version (ICD-11). However, the symptom structure of AjD is poorly understood. The aim of the present study was to investigate the dimensionality of AjD as a stress-response syndrome.

METHODS: A general population sample of the Israeli population (N = 1003) completed the Adjustment Disorder - New Module 20 and the WHO-5 Wellbeing Scale. We compared seven alternative models of AjD using confirmatory factor analysis (CFA). A latent profile analysis (LPA) was performed to determine if subtypes of AjD were present. The performance of the unidimensional and multidimensional models of AjD were evaluated using regression analyses.

RESULTS: CFA results supported a unidimensional model of AjD. The LPA identified three quantitatively distinct classes (low, medium, and high) with no evidence of any subtypes of AjD. The criterion validity of AjD was superior when treated as unidimensional. AjD was associated with lower levels of psychological wellbeing (β = -.32, p < .001).

CONCLUSIONS: Our results suggest that AjD is better conceptualised as a unidimensional construct. Future work should focus on a reduction of required symptoms in order to improve clinical utility and validity of the diagnosis.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:06 Faculty of Arts > Institute of Psychology
Dewey Decimal Classification:150 Psychology
Uncontrolled Keywords:DoktoratPsych Erstautor
Language:English
Date:6 February 2018
Deposited On:13 Feb 2018 14:30
Last Modified:31 Jul 2018 04:55
Publisher:Elsevier
ISSN:0887-6185
OA Status:Closed
Publisher DOI:https://doi.org/10.1016/j.janxdis.2018.01.007
PubMed ID:29426030
Project Information:
  • : FunderAriel University’s research authority internal grant
  • : Grant IDRA1700000037
  • : Project Title

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