Psychometric evaluation of a unified Portuguese-language version of the Body Shape Questionnaire in female university students

Abstract

The objectives of this study were to develop a unified Portuguese-language version, for use in Brazil and Portugal, of the Body Shape Questionnaire (BSQ) and to estimate its validity, reliability, and internal consistency in Brazilian and Portuguese female university students. Confirmatory factor analysis was performed using both original (34-item) and shortened (8-item) versions. The model's fit was assessed with χ²/df, CFI, NFI, and RMSEA. Concurrent and convergent validity were assessed. Reliability was estimated through internal consistency and composite reliability (α). Transnational invariance of the BSQ was tested using multi-group analysis. The original 32-item model was refined to present a better fit and adequate validity and reliability. The shortened model was stable in both independent samples and in transnational samples (Brazil and Portugal). The use of this unified version is recommended for the assessment of body shape concerns in both Brazilian and Portuguese college students.

Cytotoxicity, genotoxicity and antibacterial activity of poly(vinyl alcohol)-coated silver nanoparticles and farnesol as irrigating solutions

“…The TFEQ was originally proposed by Stunkard and Messick [17] in the English language to assess eating behavior of women and men. This instrument consisted of 51 items ( 24,26,34,39,49). This reduced version has been used in some studies and considered suitable for different samples.…”

Body weight concerns: Cross-national study and identification of factors related to eating disorders

“…It is also worth emphasizing that implementing cross-national studies provides broader scientific evidence and permits safer decision-making [13]. …”

Avaliação da estrutura fatorial do Body Shape Questionnaire: análise fatorial exploratória ou confirmatória?

“…Esse resultado torna-se preocupante, pois o BSQ é comumente utilizado em ambiente clínico para rastreamento de indivíduos com risco de desenvolver transtornos de imagem. Essa preocupação decorre da necessidade de preservar a avaliação do conceito teórico "preocupação com a forma corporal", que foi originalmente desenvolvido por Cooper et al em 1987 14 e sustentado em modelo unifatorial em outros estudos de validação realizados posteriormente [23][24][25]27,28 .…”

“…Apresentam-se na Tabela 1 os sete modelos do BSQ que foram avaliados no nosso trabalho. Cabe esclarecer que o modelo original 14 e as versões reduzidas 23 já foram avaliados por meio de estratégia confirmatória em outros estudos 24,25 e, portanto, no presente trabalho foram avaliados apenas os modelos alternativos que foram propostos em diferentes estudos a partir da utilização da AFE, cuja estratégia confirmatória ainda não havia sido realizada.…”