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Spanish validation of the Glasgow depression scale for people with intellectual disabilities (GDS-LD) and of the Glasgow depression care supplement scale (GDS-CS)

Mercedes Hernandez Nuñez-Polo (Department of Psychiatry, School of Medicine, Universidad Autónoma de Madrid, Madrid, Spain and Victim Support Unit for People with ID, Fundacion A LA PAR, Madrid, Spain)
Elena-María Lorenzo-Llamas (Department of Science Education, Universidad de Alcala de Henares, Alcalá de Henares (Madrid), Spain)
Maria-Concepcion Alonso-Rodriguez (Department of Physics and Mathematics, University of Alcala, Madrid, Spain)
Jose-Luis Ayuso-Mateos (Department of Psychiatry, School of Medicine, Universidad Autónoma de Madrid, Madrid, Spain and Centro de Investigación Biomédica en Salud Mental (CIBERSAM), Madrid, Spain)
Almudena Martorell (Fundación A LA PAR, Madrid, Spain and Centro de Investigación Biomédica en Salud Mental (CIBERSAM), Universidad Autónoma de Madrid, Madrid, Spain)

Advances in Mental Health and Intellectual Disabilities

ISSN: 2044-1282

Article publication date: 10 February 2023

Issue publication date: 15 February 2023

46

Abstract

Purpose

This study aims to validate a Spanish version of the Glasgow Depression Scale for Learning Disability (GDS-LD) and of the Glasgow Depression Care Supplement Scale (GDS-CS).

Design/methodology/approach

The GDS-LD was administered to 120 adults with mild and moderate intellectual disabilities and the GDS-CS to the staff from their occupational workshops (n = 120) to detect symptoms of depression. Internal consistency, inter-rater reliability, test-retest reliability, criterion validity, construct validity and the feasibility and applicability of both scales were analysed.

Findings

Both scales showed an adequate internal consistency (GDS-LD, a = 0.86) (GDS-CS, a = 0.88). Exploratory factor analysis revealed four well-defined factors in GDS-LD and three in GDS-CS. Pearson correlation analysis data has also been carried out with both tools for test-retest and inter-rater, showing good correlations.

Research limitations/implications

In terms, of limitations, the participants were recruited from the same centre, so this could be a problem in terms of generalisation. In addition, the GDS-LD and GDS-CS scales were developed for people with mild and moderate ID; it would be worth it to develop a version for people with severe and profound disabilities.

Practical implications

From its clinical perspective, it will be possible to have a specific tool that assesses the symptoms of depression in the Spanish population with ID. Furthermore, as it is a user-friendly scale; it can be administrated by both mental health and other professionals working in the field of disability.

Originality/value

The Spanish version of the GDS-LD and GDS-CS showed adequate rates of feasibility and reliability to assess symptoms depression among Spanish speaking adults with mild and moderate ID.

Keywords

Acknowledgements

The authors would like to thank research staff, study participants and their relatives.

Funding: This study was supported by a grant from Carlos III Research Institute (FIS, ref. no. PI16/00327) through the European Regional Development Fund (ERDF).

Ethical approval: The A LA PAR Foundation’s Ethical Committee approved the study. Only participants who consented to take part in the study were interviewed.

Citation

Nuñez-Polo, M.H., Lorenzo-Llamas, E.-M., Alonso-Rodriguez, M.-C., Ayuso-Mateos, J.-L. and Martorell, A. (2023), "Spanish validation of the Glasgow depression scale for people with intellectual disabilities (GDS-LD) and of the Glasgow depression care supplement scale (GDS-CS)", Advances in Mental Health and Intellectual Disabilities, Vol. 17 No. 1, pp. 47-58. https://doi.org/10.1108/AMHID-10-2022-0042

Publisher

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Emerald Publishing Limited

Copyright © 2023, Emerald Publishing Limited

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