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Meta-Analysis
. 2025 May;37(5):e15018.
doi: 10.1111/nmo.15018. Epub 2025 Feb 10.

Systematic Review and Meta-Analysis: Examining the Psychometric Evaluations of Disordered Eating Scales in Adults Living With Gastrointestinal Conditions

Olivia Marie Soliman  1 , Antonina Mikocka-Walus  1 , Molly M Warner  2 , David Skvarc  3 , Lisa Olive  1 , Simon R Knowles  4
Affiliations
Meta-Analysis

Systematic Review and Meta-Analysis: Examining the Psychometric Evaluations of Disordered Eating Scales in Adults Living With Gastrointestinal Conditions

Olivia Marie Soliman et al. Neurogastroenterol Motil. 2025 May.

Abstract

Background: The scales used to assess disordered eating are often not validated in adults living with gastrointestinal conditions (i.e., gastrointestinal populations). This systematic review and meta-analysis aimed to examine the psychometric evaluations (i.e., assessments of reliability and validity) of disordered eating scales in adult gastrointestinal populations and quantify the prevalence of disordered eating in both gastrointestinal and non-gastrointestinal populations.

Methods: We conducted a search of observational studies up to May 2024 that measured disordered eating using a scale in adults with a gastrointestinal condition. Psychometric evaluations of the scales were narratively reviewed. Prevalence rates of disordered eating were pooled using a random-effects meta-analysis, and risk of bias was assessed using an adapted Newcastle Ottawa Scale.

Key results: Among 29 studies (overall medium risk of bias), 23 reported prevalences of disordered eating in gastrointestinal populations, and eight of these studies also reported prevalences in non-gastrointestinal populations. Only one out of 10 scales was developed and psychometrically evaluated in gastrointestinal populations, and 11 studies reported internal consistency (range α = 0.63 to α = 0.95). The prevalence of disordered eating was 33.2% (p < 0.001; 95% confidence interval: 0.25-0.41; I2 = 97.34%) in gastrointestinal populations and 21.0% (p < 0.001; 95% confidence interval: 0.09-0.32; I2 = 97.41%) in non-gastrointestinal populations. Subgroup analyses showed consistently high heterogeneity.

Conclusions and inferences: The utilisation of current disordered eating scales for adults living with gastrointestinal conditions should be undertaken with caution, and there is a need for disordered eating scales to be developed and validated in this population.

Keywords: disordered eating; disordered eating scales; eating disorder; gastrointestinal; meta‐analysis; observational studies; psychometric evaluation.

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Conflict of interest statement

The authors declare no conflicts of interest.

Figures

FIGURE 1
FIGURE 1
PRISMA flow diagram of included studies.
FIGURE 2
FIGURE 2
Forest plot of overall prevalence of disordered eating in gastrointestinal populations.
FIGURE 3
FIGURE 3
Forest plot of prevalence of disordered eating in non‐gastrointestinal populations.
See this image and copyright information in PMC

References

    1. American Psychiatric Association , Diagnostic and Statistical Manual of Mental Disorders (5th ed., text rev. Washington, DC, 2022), 10.1176/appi.books.9780890425787. - DOI
    1. Santonicola A., Gagliardi M., Guarino M. P. L., Siniscalchi M., Ciacci C., and Iovino P., “Eating Disorders and Gastrointestinal Diseases,” Nutrients 11, no. 12 (2019): 3038, 10.3390/nu11123038. - DOI - PMC - PubMed
    1. Sato Y. and Fukudo S., “Gastrointestinal Symptoms and Disorders in Patients With Eating Disorders,” Clinical Journal of Gastroenterology 8, no. 5 (2015): 255–263, 10.1007/s12328-015-0611-x. - DOI - PubMed
    1. Werlang M. E., Sim L. A., Lebow J. R., and Lacy B. E., “Assessing for Eating Disorders: A Primer for Gastroenterologists,” American Journal of Gastroenterology 116, no. 1 (2021): 68–76, 10.14309/ajg.0000000000001029. - DOI - PubMed
    1. Sultan N., Foyster M., Tonkovic M., et al., “Presence and Characteristics of Disordered Eating and Orthorexia in Irritable Bowel Syndrome,” Neurogastroenterology and Motility 36, no. 7 (2024): e14797, 10.1111/nmo.14797. - DOI - PubMed

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