Sensitivity Analysis of Orthorexia Nervosa (ON) Using Mindful Attention Awareness Scale (MAAS) and Mindful Eating Behavior Scale-Trait (MEBS-T) Among a Sample of Adults in Bangkok, Thailand

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Name: Tanita Watprasong

LCSH: Eating disorders -- Research

LCSH: Orthorexia Nervosa

Abstract: Orthorexia Nervosa (ON) is characterized by obsessive-compulsive tendencies and the adoption of restrictive eating habits centered around healthy food choices. The lack of clear symptoms and diagnostic criteria for ON has prevented its official recognition as a psychiatric eating disorder in the DSM5, potentially leading to its unnoticed presence. The Düsseldorf Orthorexia Scale (DOS) is a widely used assessment tool with strong psychometric properties to identify individuals with ON. Due to the increased emphasis on health awareness during the pandemic, it is advantageous to investigate alternate screening utilities, such as mindfulness-based tools including Mindful Attention Awareness Scale (MAAS) and Mindful Eating Behavior Scale-Trait (MEBS-T) for early detection and incorporating mindfulness-based interventions (MBIs) into their treatment plans. Mindfulness encompasses all aspects of life, ensuring an accurate screening and treatment protocol is crucial, as failing to do so can lead to malnutrition and social and psychological damage. Aims: This diagnostic accuracy study aims to examine the potential of the Mindful Attention Awareness Scale (MAAS) and the Mindful Eating Behavior Scale-Trait (MEBS-T) as screening instruments for orthorexia nervosa (ON) by examining their sensitivity and specificity. The Düsseldorf Orthorexia Scale (DOS) was used as the standard reference for ON diagnosis. Methods: A sample of 250 adults participated in the cross-sectional study, using self-administered tools - MAAS, MEBS-T, and DOS. The instruments underwent a translation and back translation process to the Thai version, resulting in Cronbach's alpha scores ranging from 0.76 (DOS) to 0.88 (MAAS). We established the cut-offs for MAAS and MEBS-T through the comparison with the standard cut-off point of The Düsseldorf Orthorexia Scale (DOS) for ON screening. We also examined the performance of sensitivity and specificity according to Area Under the Curve (AUC). Furthermore, we conducted a performance comparison between MAAS and MEBS-T and finally evaluated the effectiveness of using either one or both tools to identify participants with ON. Results:ÿThe cut-off score for MAAS is 44, achieving a sensitivity of 84.6% and a specificity of 91.9%. The MEBS-T cut-off score is 16, exhibiting a sensitivity of 82.1% and a specificity of 88.2%. Both MAAS and MEBS-T were found to be effective screening tools with AUCs ofÿ 0.887 (95%CI 0.817, 0.957) and 0.870 (95%CI 0.791, 0.949), respectively. We found no significant difference in performance between MAAS and MEBS-T (P = 0.752).ÿ As for the results of the two tools combined, it was found that the obtained sensitivity was 79.49% and the specificity was 85.78%. which does not improve the diagnostic accuracy of people with ON.ÿ Conclusions:ÿIt was concluded that both MAAS and MEBS-T are effective tools for screening people with ON. Our study revealed that using either tool provides more benefits than using both tools to screen together. In the future, mindfulness-based screening such as MAAS or MEBS-T would be useful as a quick and effective screening instrument for ON, which could be used to plan treatment using mindfulness-based psychotherapy

Dhurakij Pundit University. Learning Center and Library.

Address: BANGKOK

Email: library@dpu.ac.th

Name: Phawit Norchai [Thesis Advisor

Role: Principal Supervisor

Name: Pansak Sukraroek

Role: Pansak Sukraroek

Modified: 2567-11-20

Created: 2023

Issued: 2024-11-11

ÇÔ·ÂÒ¹Ô¾¹¸ì/Thesis

application/pdf

eng

DegreeName: Master of Science

Level: Master's Degree

Descipline: Anti-Aging and Regenerative Medicine

Grantor: Dhurakij Pundit University

©copyrights Dhurakij Pundit University

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1	Tanita.Watp.pdf	2.49 MB	1	2026-02-04 10:06:07

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