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Measuring the ICD-11 adjustment disorder concept: Validity and sensitivity to change of the Adjustment Disorder - New Module questionnaire in a clinical intervention study


Bachem, Rahel; Perkonigg, Axel; Stein, Dan J; Maercker, Andreas (2016). Measuring the ICD-11 adjustment disorder concept: Validity and sensitivity to change of the Adjustment Disorder - New Module questionnaire in a clinical intervention study. International Journal of Methods in Psychiatric Research:Epub ahead of print.

Abstract

Adjustment disorder (AjD) is a frequent but under-researched diagnosis due in part to a lack of specific symptom criteria and adequate tools of measurement. The ICD-11 for the first time proposes a positive symptom catalogue to define AjD. This study presents a validation of the Adjustment Disorder - New Module (ADNM), the first symptom severity measure for AjD according to the ICD-11 concept. Validity and sensitivity to change were investigated in a sample of 190 individuals with a DSM-IV diagnosis of AjD. The ADNM scales demonstrated convergent and discriminant validity for anxiety symptoms (Hamilton Anxiety Scale; psychic anxiety r = 0.18-0.31), functional impairment (Sheehan Disability Scale; r = 0.18-0.47), and depression (Montgomery-Asberg Depression Scale; r = 0.13-0.30). At baseline 78% of the individuals with a DSM-IV diagnosis of AjD were also classified so by the ADNM. Repeated-measures ANOVA indicated significant ADNM-symptom decrease during treatment, replicating the patterns of the Hamilton Anxiety Scale, Sheehan Disability Scale, and Clinical Global Impression Scale. This article presents the first use of the ADNM as a measure for ICD-11 AjD in a randomized-controlled intervention study of AjD. It provides support for the construct validity and sensitivity to symptom change of this scale during pharmacological treatment.

Abstract

Adjustment disorder (AjD) is a frequent but under-researched diagnosis due in part to a lack of specific symptom criteria and adequate tools of measurement. The ICD-11 for the first time proposes a positive symptom catalogue to define AjD. This study presents a validation of the Adjustment Disorder - New Module (ADNM), the first symptom severity measure for AjD according to the ICD-11 concept. Validity and sensitivity to change were investigated in a sample of 190 individuals with a DSM-IV diagnosis of AjD. The ADNM scales demonstrated convergent and discriminant validity for anxiety symptoms (Hamilton Anxiety Scale; psychic anxiety r = 0.18-0.31), functional impairment (Sheehan Disability Scale; r = 0.18-0.47), and depression (Montgomery-Asberg Depression Scale; r = 0.13-0.30). At baseline 78% of the individuals with a DSM-IV diagnosis of AjD were also classified so by the ADNM. Repeated-measures ANOVA indicated significant ADNM-symptom decrease during treatment, replicating the patterns of the Hamilton Anxiety Scale, Sheehan Disability Scale, and Clinical Global Impression Scale. This article presents the first use of the ADNM as a measure for ICD-11 AjD in a randomized-controlled intervention study of AjD. It provides support for the construct validity and sensitivity to symptom change of this scale during pharmacological treatment.

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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
Date:9 November 2016
Deposited On:23 Nov 2016 10:21
Last Modified:23 Nov 2016 10:21
Publisher:Wiley-Blackwell Publishing, Inc.
ISSN:1049-8931
Publisher DOI:https://doi.org/10.1002/mpr.1545
PubMed ID:27862575

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