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Psychometric evaluation of a 33-item subset of MOODS-SR for distinguishing bipolar disorder

Published online by Cambridge University Press:  23 March 2020

M. Ioannou ,
M. Dellepiane ,
A. Benvenuti ,
K. Feloukatzis ,
N. Skondra  and
S. Steingrimsson
M. Ioannou*
Affiliation:
University of Gothenburg, Institute of Medicine, Psykiatri Affektiva, Gothenburg, Sweden
M. Dellepiane
Affiliation:
University of Gothenburg, Institute of Medicine, Psykiatri Affektiva, Gothenburg, Sweden
A. Benvenuti
Affiliation:
University of Pisa, Section of Psychiatry, Department of Clinical and Experimental Medicine, Pisa, Italy
K. Feloukatzis
Affiliation:
University of Gothenburg, Institute of Medicine, Psykiatri Affektiva, Gothenburg, Sweden
N. Skondra
Affiliation:
University of Gothenburg, Institute of Medicine, Psykiatri Affektiva, Gothenburg, Sweden
S. Steingrimsson
Affiliation:
University of Gothenburg, Centre of Ethics, Law and Mental Health CELAM, Gothenburg, Sweden
*
*Corresponding author.

Abstract

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Introduction

The MOODS-SR is a self-report instrument consisting of 161 dichotomous items. It is designed to assess lifetime presence of mood spectrum psychopathology. Recently, it has been proposed that a subset of 33 items can be used to distinguishing bipolar disorder.

Aim

To evaluate psychometric properties of a 33-item subset and to propose a clinically relevant cut-off for screening for bipolar disorder.

Methods

Patients with mood disorders were recruited from outpatient services at Sahlgrenska University Hospital. Patients and a convenience sample of healthy controls were offered to fill in the MOODS-SR. A post-hoc analysis was conducted for the 33-items subset of the MOODS-SR.

Results

The subset showed high internal consistency (Cronbach α = 0.95). The mean scores of patients with bipolar disorder (22.7 ± 6.4) were significantly higher than those of the unipolar (11.3 ± 4.9) and control group (7.0 ± 7.0, P < 0.005). A significant correlation was found between YMRS (r = 0.50, P < 0.005) and the 33-item subset, but not with MADRS (r = –0.22, P = 0.223).

Conclusion

The 33-item subset of MOODS-SR showed promising psychometric properties, including good known-group validity. It discriminated bipolar patients from unipolar patients and healthy subjects. The clinical usefulness of these finding needs further investigation.

Disclosure of interest

The authors have not supplied their declaration of competing interest.

Type
EW430
Information
European Psychiatry , Volume 33 , Issue S1: Abstracts of the 24th European Congress of Psychiatry , March 2016 , pp. s223
Copyright
Copyright © European Psychiatric Association 2014
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