# University Student Depression Inventory, Brazilian Version, Construct Assessment

## TL;DR

This study evaluates the psychometric properties of a Brazilian version of a depression inventory for university students.

## Contribution

The study validates a Brazilian version of the University Student Depression Inventory with high internal consistency and four factors.

## Key findings

- The USDI-BR showed high internal consistency (ω = 0.95) with 30 items.
- A new factor, 'Death wish and social withdrawal,' was added, resulting in four total factors.
- The inventory demonstrates validity and psychometric properties requiring further study.

## Abstract

to assess the University Student Depression Inventory, Brazilian version (USDI-BR), construct.

a methodological study carried out with a snowball probabilistic sample, consisting of 334 undergraduate and graduate students. Confirmatory factor analysis, reliability using McDonald’s omega coefficient and Cronbach’s alpha were performed. Principal component analysis was performed using the varimax rotation and oblimin rotation, using the Kaiser-Meyer-Olkin criteria, Bartlett’s test of sphericity and scree plot.

the USDI-BR presented an internal consistency of items of ω = 0.95 and remained with 30 items, with the addition of 1 factor (Death wish and social withdrawal), totaling 4 factors.

the USDI-BR has evidence that points to its validity and also its internal consistency, deserving that new studies be carried out to expand the evidence of its psychometric properties.

avaliar o construto do University Student Depression Inventory, versão brasileira (USDI-BR).

estudo metodológico, realizado com uma amostra probabilística bola de neve constituída de 334 estudantes de graduação e pós-graduação. Foram realizadas a análise fatorial confirmatória, a confiabilidade pelo coeficiente de ômega de McDonald e o alfa de Cronbach. A análise por componentes principais foi realizada utilizando a rotação ortogonal varimax e a rotação oblíqua oblimin, por meio dos critérios de Kaiser-Meyer-Olkin, teste de esfericidade de Bartlett e scree plot.

o USDI-BR apresentou consistência interna dos itens de ω = 0,95 e permaneceu com 30 itens, com acréscimo de 1 fator (Desejo de morrer e retraimento social), totalizando 4 fatores.

o USDI-BR possui evidências que remetem à sua validade e também à sua consistência interna, merecendo que novos estudos sejam realizados visando ampliar as evidências de suas propriedades psicométricas.