Tradução e validação para o Brasil da escala de imagem corporal para adolescentes: offer self-image questionnaire (OSIQ) Translation and validation for Brazil of the body image scale for adolescents: Offer Self-Image Questionnaire (OSIQ)

Abstract

OBJETIVO: Apreciar a equivalência semântica e de mensuração da subescala de imagem corporal do Offer Self Image Questionnaire (OSIQ). MÉTODOS: Participaram 386 adolescentes, na faixa etária de 10 a 18 anos, de ambos os sexos, de uma escola particular de ensino fundamental e médio. Realizou-se tradução, retrotradução, revisão técnica e avaliação do instrumento. Avaliou-se a consistência interna, a validade discriminante e concorrente e a confiabilidade. RESULTADOS: O instrumento apresentou, para a consistência interna, valores que variaram de 0,43 a 0,51 e foi capaz de discriminar os grupos estudados - população total, meninos, meninas, e meninos em fase inicial de adolescência, segundo o estado nutricional (pOBJECTIVE: To evaluate the semantic and measure equivalence of the body image sub-scale of the Offer Self Image Questionnaire (OSIQ). METHODS: Participants were 386 teenagers, 10 to 18 years old, both sexes, enrolled in a private school (junior and high school age). Translation, back-translation, technique revision and evaluation were conducted. The Portuguese instrument was evaluated for internal consistency, discriminate and concurrent validity. RESULTS: Internal consistency showed values from 0.43 to 0.54 and was able to discriminate all groups studied - the whole population, boys and girls, and boys in early adolescence, by nutritional status (p<0.001; p<0.009; p=0.030; p=0.043, respectively). Concurrent analyses showed significant correlation with anthropometric measures only for girls (r=-0.16 and p=0.021; r=-0.19 and p=0.007), early adolescence (r=-0.23 and p=0.008; r=-0.26 and p=0.003) and intermediate adolescence (r=-0.29 and p=0.010) and the retest confirmed reliability by the coefficient of interclass correlation. Although the instrument has proven its ability to discriminate between the groups studied by nutritional state, other results were less satisfactory. More studies are necessary for full transcultural adaptation, including the application of other comparative scales. CONCLUSION: The body image sub-scale of the OSIQ was translated, but the results are not promising and require more studies.

Keywords

• estudos de validação
• reprodutibilidade dos testes
• tradução
• imagem corporal
• adolescente
• escalas
• validation studies
• reproducibility of results
• translating
• body image
• adolescent
• scales