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The Brief Symptom Inventory-9 (BSI-9): Psychometric properties among Irish college students

Published online by Cambridge University Press:  26 August 2025

C. A. Lewis  and
F. Houghton
C. A. Lewis*
Affiliation:
Psychology, Leeds Trinity University, Leeds, United Kingdom
F. Houghton
Affiliation:
Department of Applied Social Science, Technological University of the Shannon, Limerick, Ireland
*
*Corresponding author.

Abstract

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Introduction

The Brief Symptom Inventory-9 (BSI-9) is a recently developed short (9-item) self-report scale measuring distress. It has three Subscales measuring Anxiety, Depression, and Somatisation. The BSI-9 is based on longer scales (BSI-18, BSI-53, and SCL-90) and was developed as a brief screening tool.

Objectives

The present study examined the generalisability of the original foundational research undertaken in Germany. The present study examined the psychometric properties of the BSI-9 among a sample of Irish college students.

Methods

A sample of 763 Irish college students completed the BSI-9, and a further 18 students completed the BSI-9 on two occasions, separated by four weeks, as part of a more extensive study. Factor analyses and reliability analyses were carried out.

Results

The BSI-9 scale and the three Subscales measuring Somatisation, Anxiety, and Depression were each found to have appropriate factor loadings, satisfactory levels of internal consistency, and satisfactory levels of temporal stability across four weeks. These findings are consistent with those reported in the original foundational research in Germany.

Conclusions

Although the sample size was small and restricted to students only, the present study does provide evidence for the reliability of the BSI-9 among a sample of Irish college students. Future work is now required to extend this work to examine the convergent validity of the BSI-9 among other English-speaking samples.

Disclosure of Interest

None Declared

Information

Type
Abstract
Information
European Psychiatry , Volume 68 , Special Issue S1: Abstracts of the 33rd European Congress of Psychiatry , April 2025 , pp. S732 - S733
Creative Commons
Creative Common License - CCCreative Common License - BY
This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution, and reproduction in any medium, provided the original work is properly cited.
Copyright
© The Author(s), 2025. Published by Cambridge University Press on behalf of European Psychiatric Association
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