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Health and Quality of Life Outcomes
Published in: Health and Quality of Life Outcomes 1/2018

Open Access 01-12-2018 | Research

Cross-cultural adaptation and psychometric properties of the Kessler Scale of Psychological Distress to a traumatic brain injury population in Swahili and the Tanzanian Setting

Authors: Joao Ricardo Nickenig Vissoci, Silvia Daniela Vaca, Deena El-Gabri, Leonardo Pestillo de Oliveira, Mark Mvungi, Blandina Theophil Mmbaga, Michael Haglund, Catherine Staton

Published in: Health and Quality of Life Outcomes | Issue 1/2018

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Abstract

Background

To evaluate the psychometric properties of a Swahili version of the Kessler Psychological Distress scale in an injury population in Tanzania.

Methods

Swahili version of the Kessler Psychological Distress scale was developed by translation and back-translation by a panel of native speakers of both English and Swahili. The translated instruments were administered to a sample of Tanzanian adults from a traumatic brain injury registry. The content validity, construct validity, reliability, internal structure, and external reliability were analyzed using standard statistical methods.

Results

Both translated versions of the Kessler Psychological Distress scale were found to be reliable (>0.85) for all tested versions. Confirmatory factor analysis of one and two factor solution showed adequate results. Kessler Psychological Distress scale scores were strongly correlated to depression and quality of life (R>0.50).

Conclusions

This paper presents the first Swahili adaptations of the Kessler Psychological Distress scale as well as the first validation of these questionnaires in Tanzania. The instrument was found to have acceptable psychometric properties, resulting in a new useful tool for medical and social research in this setting.
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Metadata
Title
Cross-cultural adaptation and psychometric properties of the Kessler Scale of Psychological Distress to a traumatic brain injury population in Swahili and the Tanzanian Setting
Authors
Joao Ricardo Nickenig Vissoci
Silvia Daniela Vaca
Deena El-Gabri
Leonardo Pestillo de Oliveira
Mark Mvungi
Blandina Theophil Mmbaga
Michael Haglund
Catherine Staton
Publication date
01-12-2018
Publisher
BioMed Central
Published in
Health and Quality of Life Outcomes / Issue 1/2018
Electronic ISSN: 1477-7525
DOI
https://doi.org/10.1186/s12955-018-0973-0

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