A Brief Assessment of Body Image Perception: Norm Values and Factorial Structure of the Short Version of the FKB-20

[A Short Version of the Body Experience Questionnaire (FBeK): Results of Clinical and Non-Clinical Samples]

OBJECTIVES

The aim of this study was the development and evaluation of a short (9-item) version of the body experience questionnaire (FBeK-9).

METHOD

Based upon a representative survey from 1996, a 15-item version of the FBeK was constructed which was then evaluated in another representative sample (n=2510) as well as three clinical groups, namely patients with depressive disorders (n=106), patients with eating disorders (N=107), and patients suffering from pain (N=90). Depressive and anxiety symptoms and pain disability (PHQ-9, PHQ-4, PDI) were also assessed. Item selection and the determination of the factor structure were performed using exploratory and confirmatory factor analysis and led to the development of the FBeK-9. The final three subscales were tested for invariance related to sex, age and disorder. In addition, convergent validity was assessed and norms were provided.

RESULTS

Models of confirmatory factor analyses revealed acceptable fit indices ((CFI) =0.982,(ω ) =0.020) in all samples. The subscales "uncertainty/impaired sensation","attractiveness/self-confidence" and "accentuation of the body/sensitivity" indicated acceptable reliability (ω=0.707) and correlated with depressive and anxiety symptoms and pain in an expected manner. We also could show differences between the normative sample and the clinical groups. Measurement invariance was shown for age and sex.

CONCLUSIONS

It can be concluded that the 9-item version of the body experience questionnaire also provides a reliable, valid and economically efficient measure that can be used in studies of body experience in non-clinical and clinical samples. In the future, more validity studies should be performed.