RESEARCH ARTICLE


Validity and Reliability of the Digital Functioning Assessment Short Test (D-FAST) in the Brazilian Sample



Silvia Dubou Serafim1, 2, Jeferson Ferraz Goularte1, 2, Marco Antonio Caldieraro1, 2, Flavia Moreira Lima3, Giovana Dalpiaz1, 2, Francisco Diego Rabelo-da-Ponte1, 2, Carla Torrent4, Brisa Solé4, Eduard Vieta4, Adriane Ribeiro Rosa1, 2, 5, *
1 Laboratory of Molecular Psychiatry, Hospital de Clínicas de Porto Alegre, University Federal of Rio Grande do Sul, Porto Alegre, Rio Grande do Sul, RS, Brazil
2 Postgraduate Program in Psychiatry and Behavioral Sciences, University Federal of Rio Grande do Sul, Porto Alegre, RS, Brazil
3 Hospital de Clínicas de Porto Alegre, University Federal of Rio Grande do Sul , Porto Alegre, Rio Grande do Sul, RS, Brazil
4 Bipolar and Depressive Disorders Unit, Hospital Clinic, University of Barcelona, Institute of Neuroscience, IDIBAPS, CIBERSAM, c/Villarroel, 170, 12-0, 08036 Barcelona, Catalonia, Spain
5 Departament of Pharmacology, Institute of Basic Health Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil


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Creative Commons License
© 2022 Serafim et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: https://creativecommons.org/licenses/by/4.0/legalcode. This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the Postgraduate Program in Psychiatry and Behavioral Sciences, Federal University of Rio Grande do Sul, Porto Alegre, RS, Brazil; E-mail: adrianerrosa@gmail.com


Abstract

Background:

The COVID-19 pandemic has caused major disruptions in all aspects of daily functioning, from school and work to interactions with friends and family. The Functioning Assessment Short Test (FAST) is an interviewer-administered scale validated in the psychiatric sample with no previous study assessing its validity and reliability in a digital format. Thus, we aimed to analyse the psychometric properties of the digital version of the FAST and understand the implications of COVID-19 and restrictive measures on functioning.

Methods:

Data were collected using an online survey. The psychometric properties of the digital FAST were assessed by confirmatory factor analysis, Cronbach’s alpha, and discriminant functional by cluster analysis in a community sample.

Results:

Out of the total sample, 2,543 (84.1%) were female, and the mean (SD) age was 34.28 (12.46) years. The digital FAST retained the six factors structure observed in the original version, with Cronbach’s alpha above 0.9. In addition, we showed evidence of discriminant validity by differentiating three clusters of psychosocial functioning. Clinical and demographic differences between groups explained, in part, the heterogeneity of functioning, thus providing support for the construct validity of the instrument.

Conclusion:

The digital FAST is a simple and easy-to-understand instrument that provides a multidimensional assessment of functioning without the need for an interviewer. Furthermore, our findings may help to better understand the psychosocial implications of the pandemic and the importance of planning specific interventions to rehabilitee the affected group.

Keywords: COVID-19, Pandemic, Public health, Deaths, Virus transmission, Psychosocial implications.