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Revista Colombiana de Psiquiatría
versión impresa ISSN 0034-7450
Resumen
DOMINGUEZ-LARA, Sergio et al. Psychometric Analysis of the Body Shape Questionnaire in Mexican University Students. rev.colomb.psiquiatr. [online]. 2020, vol.49, n.3, pp.154-161. Epub 15-Ene-2021. ISSN 0034-7450. https://doi.org/10.1016/j.rcp.2018.09.002.
Objective:
To analyse the psychometric properties, internal structure, and relationship with anthropometric indicators of the Body Shape Questionnaire (BSQ) among Mexican university students according to the measurement invariance approach.
Methods:
An instrumental study was carried out to assess the psychometric properties, validity, and reliability of the BSQ. The analysis of the measurement invariance was performed using the Least Squares Estimation, and weighted by adjusted variance and polychoric correlations after assessing different measurement models for BSQ in each group. The scores of the final version were correlated with anthropometric indicators by the Pearson correlation coefficient.
Results:
As regards the dimensional analysis, all of the previous models for BSQ have favourable adjustment rates, although those with a single factor show more robust evidence. The configural invariance was accepted; suggesting that the one-dimensional structure is common for both men and women. However, 16-item factorial loadings were statistically different between the groups. Hence, they were discarded and an 18-item version (BSQ-18) was obtained, which is considered invariant as regards gender. In addition, there is a direct relationship between the scores of the BSQ-18 version and the body mass index, waist circumference, and fat percentage. Satisfactory indicators were found as regards stability.
Conclusions:
The BSQ-18 can be used with men and women, and has high reliability indicators to be conducted in clinical settings to assess eating disorders and obesity among university students
Palabras clave : Psychometry Body image Body composition Student health Gender and health.