Validation and assessment of psychometric properties of the Greek Eating Behaviors Assessment for Obesity (GR-EBA-O).

INTRODUCTION: With increasing morbidity and risk of death, obesity has become a serious health problem largely attributable to difficulties in finding proper treatments for related diseases. Many studies show how detecting abnormal eating behaviors could be useful in developing effective clinical treatments. This study aims at validating the Greek version of the Eating Behaviors Assessment for Obesity (EBA-O). METHOD: After a double English/Greek forward/backward translation of the EBA-O, 294 participants completed the Greek version (GR-EBA-O), the Eating Disorder Examination Questionnaire, the Binge Eating Scale, and the Yale Food Addiction Scale. Confirmatory factor analysis (CFA) and construct validity were calculated, and Two-way MANOVA was computed with the factors of GR-EBA-O controlling for sex and BMI categories. RESULTS: CFA confirmed the second-order five factors (i.e., food addiction, night eating, binge eating, sweet eating, and prandial hyperphagia) structure of the original EBA-O with excellent fit indices. GR-EBA-O factors were highly correlated. The GR-EBA-O subscales were also significantly correlated with the remaining measures, demonstrating good concurrent validity. CONCLUSION: The Greek version of the EBA-O has demonstrated sound psychometric properties and appears a reliable and user-friendly tool to identify pathological eating behaviors in obesity. LEVEL OF EVIDENCE: V, descriptive research.

"That's not at all what I needed" trans adults' perspectives on trans-affirming primary care and eating disorders.

Transgender and gender diverse adults, referred to collectively as trans, experience eating disorders (EDs) at high rates and struggle to find primary care providers (PCPs) knowledgeable in both gender-affirming care and EDs. Most research regarding healthcare experiences of trans people with EDs focuses on specialized treatment. This qualitative study explored the experiences of trans patients with ED symptoms in trans-affirming primary care, which offers clinical support for gender affirmation in the context of interpersonally gender-affirming primary care services. Twenty-two participants were recruited via social media to participate in focus groups (n = 5). Researchers utilized thematic analysis. Participants reported gender-affirming and non-affirming experiences, experienced unwelcome comments from providers regarding bodies and gender, encountered barriers to disclosing their ED symptoms, felt transition-related medical care supported recovery but did not always resolve their ED symptoms, felt they had to self-advocate, and wanted their providers to recognize them as whole people (beyond their ED and transness) who experience joy. Importantly, despite being trans-affirming, participants critiqued trans-affirming primary care as perpetuating weight stigma and binary gender norms. Participants recommended providers receive ED training, implement universal ED screening, and explore how sociocultural norms regarding weight and gender negatively impact trans health outcomes.

Working out measurement overlap in the assessment of maladaptive exercise.

OBJECTIVE: Although exercise is generally considered healthy, many individuals engage in maladaptive exercise (e.g., compulsive in nature). Several definitions of maladaptive exercise exist, leading to multiple, varied assessment tools; assuming homogeneity across these assessments contributes to low consensus in etiological models. METHOD: We used a Jaccard Index to quantify content overlap among 15 commonly-used self-report instruments measuring maladaptive exercise, with 31 features identified across 224 items. RESULTS: The most common features were exercise to control weight/shape and to avoid negative affect (both included in 9/15 instruments), or compensate for calories consumed (8/15 instruments). Overlap among instruments was low (.206) and no features were common across all instruments. CONCLUSIONS: Findings generally support theoretical models of exercise in eating pathology. However, instruments most commonly used to assess maladaptive exercise measure heterogenous content. Careful consideration should be taken when comparing findings derived from differing instruments, when synthesizing literature on maladaptive exercise, and when selecting instruments to measure specific maladaptive exercise features. PUBLIC SIGNIFICANCE: Many, varied, tools exist for the assessment of maladaptive exercise (e.g., compulsive or compensatory) in the context of eating disorders. Assuming homogeneity across tools contributes to low consensus in the field. We used a Jaccard Index to quantify content overlap among 15 self-report instruments measuring maladaptive exercise. The most commonly used instruments measure heterogenous content. Careful consideration should be taken when synthesizing literature and selecting instruments to use in research.

Disparities in Medical Assessment Practices for Adolescents at Risk for Eating Disorders.

PURPOSE: The United States Preventative Services Task Force found insufficient evidence to support universal screening for eating disorders (EDs) but did recommend assessing high-risk adolescents through laboratory tests, close follow-up, and referrals to other specialties. Yet, it is unclear whether youth at high risk for EDs receive such assessment and whether patient characteristics influence such practices. METHODS: Using the Rochester Epidemiological Project, we identified adolescents (13-18 years) at risk for EDs (i.e., weight loss, underweight, or loss of appetite not explained by a medical condition) who presented for a medical appointment between January 1, 2005 to December 31, 2017 (n = 662; M age = 15.8 years; 66% female; 76% white). Patient and visit characteristics, assessment practices (i.e., tests, referrals, and follow-up), and ED diagnoses within 5 years following index visit were extracted. RESULTS: Adolescents who received referrals to other providers were 4 times more likely to be diagnosed with a future ED (p < .001) and were diagnosed 137.8 days sooner (Est = -137.8, p = .04) compared to those who did not receive referrals. Compared to males, females were 2.2 times more likely to receive referrals (p < .001). Compared to those presenting at a lower body mass index, adolescents with a higher body mass index were more likely to receive medical tests (HR = 1.0, p < .01) and less likely to receive recommendations to improve eating/weight (HR = 0.99, p < .01) or follow up visits (HR = 0.99, p < .01). DISCUSSION: Disparities in assessment practices for adolescents at high-risk for EDs underscore the need for improved tools to enhance early detection and treatment.

Assessment of eating disorders and depression in postpartum women.

OBJECTIVE: To determine the prevalence of eating disorders and orthorexia in postpartum women and examine the relationship with postpartum depression. STUDY DESIGN: Included in this study were 227 postpartum women. The Eating Attitude Test-26 (EAT-26) was used to determine the risk of eating disorders in the women, followed by the Orthorexia 11 Scale (ORTO-11) to identify orthorexia, and the Edinburgh Postpartum Depression Scale (EPDS) to identify postpartum depression. RESULTS: 63 of the women (27.8%) exhibited an orthorexic tendency, which was also related to eating disorders and postpartum depression. Each one-point increase in the EAT-26 score led to a decrease of 0.32 points in the ORTO-11 score. Similarly, each one-point increase in the EPDS score caused a reduction of 0.18 points in the ORTO-11 score. The ORTO-11 score increased by 0.26 points per each live birth. CONCLUSION: An obsessive focus on healthful nutrition may result in the impairment of health and numerous adverse psychological and physiological outcomes in the future. Healthy eating habits should be maintained to improve the quality of life without causing an obsession with healthy eating.

A multifaceted approach to assessment of mentalization: the mentalization profile in patients with eating disorders.

Purpose: The existing literature, however sparse, suggests an association between eating disorders (ED) and mentalization ability. The aim of this study was to investigate the mentalization profile (MP) in patients with ED. It was hypothesized that patients with ED would have a lower degree of mentalization ability compared to healthy controls (HC).Materials and methods: The study is based on a cross-sectional survey on a sample of patients diagnosed with ED compared to a HC group.Results and conclusion: A total of 88 participants, distributed between patients with ED (N = 30) and HC (N = 58) were included.Results: The study results show statistically significant differences between patients with ED and HC. Thus, patients with an ED scored significantly higher on Reflective Functioning Questionnaire (uncertainty about mental states) (RFQ-U) (mean difference: 0.31, p = 0.048) and Toronto Alexithymia Scale (TAS-20) (mean difference: 0.44, p = 0.019) compared to the HC. Furthermore, the results indicated that patients with Bulimia Nervosa (BN) may have a lower ability to mentalize about oneself as well as a generally lower ability to mentalize across different dimensions of the mentalization profile as the BN group scored significantly higher on RFQ-U (mean difference: 0.71, p = 0.023) and TAS-20 (mean difference: 0.89, p = 0.006) compared to the Anorexia Nervosa (AN) group. Further research should be conducted to gain knowledge on the mentalization ability in patients with an ED.

Eating disorders in transgender and gender diverse people: characteristics, assessment, and management.

PURPOSE OF REVIEW: This review summarizes recent research on eating disorders among gender minorities, transgender and gender diverse people. The focus is on research published in 2022 and the first half of 2023. RECENT FINDINGS: Up to 1.2% of young people and 0.3-0.5% of adults identify as transgender, and 2.7-8.4% of young people and 0.3-4.5% of adults report some degree of gender diversity. About 20-50% of transgender and gender diverse people report engaging in disordered eating and >30% screen positive for eating disorder symptoms, and 2-12% have received an eating disorder diagnosis from a health professional. Many transgender and gender diverse people describe eating disorder symptoms as a way of coping with gender dysphoria. They also report high levels of mental and behavioral symptoms, particularly mood and anxiety disorders, suicidal thoughts and behaviors, trauma-related symptoms and disorders, alcohol and substance use, and autism. Gender minorities frequently experience discrimination, victimization, and violence, primarily sexual and physical violence. The minority stress model attributes mental health symptoms to these factors. Promising interventions based on the minority stress model have recently become available, but more research is needed on how to support transgender and gender diverse people with eating disorders. To manage eating disorders in this population, gender-affirming care should be combined with specialist eating disorder treatment. SUMMARY: Gender minorities are at high risk for eating disorders. Future studies should assess what is the most appropriate treatment for transgender and gender diverse people with eating disorders.

Thin Ideal Internalization Assessment (THIINA): Development and Psychometric Validation of a New Measure of Female Body Image.

Thin ideal internalization is widely implicated in women's body image and eating disturbances. A recently proposed multidimensional operationalization of internalization suggests the brevity and construct validity of existing questionnaires may limit the assessment of thin ideal internalization. Therefore, this research aimed to develop a new questionnaire (i.e., Thin Ideal Internalization Assessment; THIINA) to comprehensively assess thin ideal internalization. In Study 1, 301 female participants were administered the THIINA. Exploratory factor analyses revealed the 17-item THIINA had a stable 3-factor structure reflecting thin idealization, thin overvaluation, and thin behavioral drive. In Study 2, 337 female participants were administered the THIINA and validation measures. Confirmatory factor analysis confirmed stability of the 3-factor structure and findings supported convergent, discriminant, and incremental validity of the THIINA. Support for temporal stability was found within a sub-sample of participants (n = 132). The THIINA demonstrated strong psychometric properties, a stable three-factor structure representing theoretically-driven domains, and support for the creation of a composite score representing overall thin ideal internalization. These findings suggest the multidimensional operationalization and measurement of thin ideal internalization could improve theoretical and clinical understanding of the impact of thin ideal internalization on women's body image and eating.

Network-based validation of the psychometric questionnaire EDI-3 for the assessment of eating disorders.

Assessing the validity of a psychometric test is fundamental to ensure a reliable interpretation of its outcomes. Few attempts have been made recently to complement classical approaches (e.g., factor models) with a novel technique based on network analysis. The objective of the current study is to carry out a network-based validation of the Eating Disorder Inventory 3 (EDI-3), a questionnaire designed for the assessment of eating disorders. Exploiting a reliable, open source sample of 1206 patients diagnosed with an eating disorder, we set up a robust validation process encompassing detection and handling of redundant EDI-3 items, estimation of the cross-sample psychometric network, resampling bootstrap procedure and computation of the median network of the replica samples. We then employed a community detection algorithm to identify the topological clusters, evaluated their coherence with the EDI-3 subscales and replicated the full validation analysis on the subpopulations corresponding to patients diagnosed with either anorexia nervosa or bulimia nervosa. Results of the network-based analysis, and particularly the topological community structures, provided support for almost all the composite scores of the EDI-3 and for 2 single subscales: Bulimia and Maturity Fear. A moderate instability of some dimensions led to the identification of a few multidimensional items that should be better located in the intersection of multiple psychological scales. We also found that, besides symptoms typically attributed to eating disorders, such as drive for thinness, also non-specific symptoms like low self-esteem and interoceptive deficits play a central role in both the cross-sample and the diagnosis-specific networks. Our work adds insights into the complex and multidimensional structure of EDI-3 by providing support to its network-based validity on both mixed and diagnosis-specific samples. Moreover, we replicated previous results that reinforce the transdiagnostic theory of eating disorders.

Eating Disorder Screening and Treatment in a Medically Underserved Southern State: Data Collected by a Legislative Eating Disorder Council and Implications for Statewide Assessment.

Healthcare providers play a key role in early identification of eating disorders (EDs), especially in underserved states where ED treatment resources are lacking. Currently, there is little known about ED screening and treatment practices in underserved states. The current study assessed current ED screening and treatment practices among healthcare providers in an underserved state using data collected by a government-formed state ED council. Healthcare providers (N = 242; n = 209 behavioral health providers; n = 33 medical providers) practicing in Kentucky completed a brief, anonymous survey on ED screening and treatment practices, comfort with screening for EDs, and interest in continued education. Over half of healthcare providers indicated screening for EDs, with the majority using a clinical interview. After identification of ED symptoms, providers reported a combination of treating in-house, referring out, or seeking consultation. In bivariate analyses, medical providers were significantly more likely than behavioral health providers to use a screening tool specifically designed for EDs. The majority of medical providers indicated that they received education about EDs and feel knowledgeable about ED screening tools, though most reported infrequent use of these screening tools in their practice. Nearly all behavioral health and medical providers expressed interest in continuing education on ED screening and treatment. These findings indicate a need for, and interest in, education on evidence-based ED screening and treatment resources in underserved states and demonstrate the utility of a state ED council to collect these data to inform future education and treatment strategies.

Design and methods of the Longitudinal Eating Disorders Assessment Project research consortium for veterans.

INTRODUCTION: Military service members must maintain a certain body mass index and body fat percentage. Due to weight-loss pressures, some service members may resort to unhealthy behaviors that place them at risk for the development of an eating disorder (ED). OBJECTIVES: To understand the scope and impact of EDs in military service members and veterans, we formed the Longitudinal Eating Disorders Assessment Project (LEAP) Consortium. LEAP aims to develop novel screening, assessment, classification, and treatment tools for veterans and military members with a focus on EDs and internalizing psychopathology. METHODS: We recruited two independent nationally representative samples of post-9/11 veterans who were separated from service within the past year. Study 1 was a four-wave longitudinal survey and Study 2 was a mixed-methods study that included surveys, structured-clinical interviews, and qualitative interviews. RESULTS: Recruitment samples were representative of the full population of recently separated veterans. Sample weights were created to adjust for sources of non-response bias to the baseline survey. Attrition was low relative to past studies of this population, with only (younger) age predicting attrition at 1-week follow-up. CONCLUSIONS: We expect that the LEAP Consortium data will contribute to improved information about EDs in veterans, a serious and understudied problem.

How does the increase in eating difficulties according to the Development and Well-Being Assessment screening items relate to the population prevalence of eating disorders? An analysis of the 2017 Mental Health in Children and Young People survey.

OBJECTIVE: We examine the test accuracy of the Development and Well-Being Assessment (DAWBA) eating disorder screening items to explore whether the increased eating difficulties detected in the English National Mental Health of Children and Young People (MHCYP) Surveys 2021 reflect an increased population prevalence. METHODS: Study 1 calculated sensitivity, specificity, and positive and negative predictive values from responses to the DAWBA screening items from 4057 11-19-year-olds and their parents, in the 2017 MHCYP survey. Study 2 applied the positive predictive value to data from 1844 11-19-year-olds responding to the 2021 follow-up to estimate the prevalence of eating disorders in England compared to 2017 prevalence. RESULTS: Parental report most accurately predicted an eating disorder (93.6%, 95% confidence interval: 92.7-94.5). Sensitivity increased when parent and child answers were combined, and with a higher threshold (of two) for children. The prevalence of eating disorders in 2021 was 1% in 17-19-year-olds, and .6% in 11-16-year-olds-similar to the prevalence reported in 2017 (.8% and .6%, respectively). However, estimates for boys (.2%-.4%) and young men (.0%-.4%) increased. DISCUSSION: We found tentative evidence of increased population prevalence of eating disorders, particularly among young men. Despite this, the DAWBA screening items are useful for ruling out eating disorders, particularly when parents or carers screen negative, but are relatively poor at predicting who will have a disorder. Data from both parents and children and applying a higher cut point improves accuracy but at the expense of more missed cases. PUBLIC SIGNIFICANCE STATEMENT: The prevalence of eating disorders did not markedly change from 2017 to 2021, but we found tentative evidence of an increase, particularly among young men. This is despite larger increases in problematic eating, which need further investigation. The DAWBA screen is best suited to ruling out eating disorders which limits its clinical applications as it would provide many false positives requiring further assessment.

Network analysis studies in patients with eating disorders: A systematic review and methodological quality assessment.

INTRODUCTION: Network psychometrics has been enthusiastically embraced by researchers studying eating disorders (ED), but a rigorous evaluation of the methodological quality of works is still missing. This systematic review aims to assess the methodological quality of cross-sectional network analysis (NA) studies conducted on ED clinical populations. METHODS: PRISMA and PICOS criteria were used to retrieve NA studies on ED. Methodological quality was evaluated based on five criteria: variable-selection procedure, network estimation method, stability checks, topological overlap checks, and handling of missing data. RESULTS: Thirty-three cross-sectional NA studies were included. Most studies focused on populations that were female, white and, with an anorexia nervosa (AN) diagnosis. Depending on how many criteria were satisfied, 27.3% of studies (n = 9) were strictly adherent, 30.3% (n = 10) moderately adherent, 33.3% (n = 11) sufficiently adherent, and 9.1% (n = 3) poorly adherent. Missing topological overlap checks and not reporting missing data represented most unreported criteria, lacking, respectively, in 63.6% and 48.5% of studies. CONCLUSIONS: Almost all reviewed cross-sectional NA studies on ED report those methodological procedures (variable-selection procedure, network estimation method, stability checks) necessary for a network study to provide reliable results. Nonetheless these minimum reporting data require further improvement. Moreover, elements closely related to the validity of an NA study (controls for topological overlap and management of missing data) are lacking in most studies. Recommendations to overcome such methodological weaknesses in future NA studies on ED are discussed together with the need to conduct NA studies with longitudinal design, to address diversity issues in study samples and heterogeneity of assessment tools. PUBLIC SIGNIFICANCE: The present work aims to evaluate the quality of ED NA studies to support applications of this approach in ED research. Results show that most studies adopted basic procedures to produce reliable results; however, other important procedures linked to NA study validity were mostly neglected. Network methodology in ED is extremely promising, but future studies should consistently include topological overlap control procedures and provide information on missing data.

INTRODUCCIÓN: La psicometría de red ha sido aceptada con entusiasmo por los investigadores que estudian los trastornos de la conducta alimentaria (TCA), pero aún falta una evaluación rigurosa de la calidad metodológica de los trabajos. Esta revisión sistemática tiene como objetivo evaluar la calidad metodológica de los estudios de análisis de redes transversales (NA) realizados en poblaciones clínicas de TCA. MÉTODOS: Se utilizaron los criterios PRISMA y PICOS para recuperar los estudios de NA en TCA. La calidad metodológica se evaluó con base en 5 criterios: procedimiento de selección de variables, método de estimación de red, comprobaciones de estabilidad, comprobaciones de superposición topológica, manejo de datos faltantes. RESULTADOS: Se incluyeron 33 estudios transversales de NA. La mayoría de los estudios se centraron en poblaciones que eran mujeres, blancas y con un diagnóstico de anorexia nerviosa (AN). Dependiendo de cuántos criterios se cumplieron, el 27,3% de los estudios (n = 9) fueron estrictamente adherentes, el 30,3% (n = 10) moderadamente adherentes, el 33,3% (n = 11) suficientemente adherentes, el 9,1% (n = 3) poco adherentes. La falta de controles topológicos de superposición y el no reportar los datos faltantes representó la mayoría de los criterios no reportados, faltando respectivamente en el 63,6% y el 48,5% de los estudios. CONCLUSIONES: Casi todos los estudios transversales revisados de NA sobre TCA reportaron aquellos procedimientos metodológicos (procedimiento de selección de variables, método de estimación de red, comprobaciones de estabilidad) necesarios para que un estudio de red proporcione resultados confiables. No obstante, estos datos mínimos de presentación de reportes requieren mejoras adicionales. Además, en la mayoría de los estudios faltan elementos estrechamente relacionados con la validez de un estudio de NA (controles para la superposición topológica y el manejo de los datos faltantes). Las recomendaciones para superar tales debilidades metodológicas en futuros estudios de NA sobre los TCA son discutidos junto con la necesidad de realizar estudios de NA con diseño longitudinal, para abordar los problemas de diversidad en las muestras de estudio y la heterogeneidad de las herramientas de evaluación.

Eating Disorder Examination-Questionnaire and Clinical Impairment Assessment norms for intersectional identities using an MTurk sample.

OBJECTIVE: There are limited data to guide the interpretation of scores on measures of eating-disorder psychopathology among underrepresented individuals. We aimed to provide norms for the Eating Disorder Examination-Questionnaire (EDE-Q) and Clinical Impairment Assessment (CIA) across racial/ethnic, gender, and sexual identities, and sexual orientations and their intersections by recruiting a diverse sample of Amazon MTurk workers (MTurkers; N = 1782). METHOD: We created a comprehensive, quantitative assessment of racial/ethnic identification, gender identification, sex assigned at birth, current sexual identification, and sexual orientation called the Demographic Assessment of Racial, Sexual, and Gender Identities (DARSGI). We calculated normative data for each demographic category response option. RESULTS: Our sample was comprised of 68% underrepresented racial/ethnic identities, 42% underrepresented gender identities, 13% underrepresented sexes, and 49% underrepresented sexual orientations. We reported means and standard deviations for each demographic category response option and, where possible, mean estimates by percentile across intersectional groups. EDE-Q Global Score for a subset of identities and intersections in the current study were higher than previously reported norms for those identities/intersections. DISCUSSION: This is the most thorough reporting of norms for the EDE-Q and CIA among racial/ethnic, sexual, and gender identities, and sexual orientations and the first reporting on multiple intersections, filling some of the gaps for commonly used measures of eating-disorder psychopathology. These norms may be used to contextualize eating-disorder psychopathology reported by underrepresented individuals. The data from the current study may help inform research on the prevention and treatment of eating-disorder psychopathology in underrepresented groups. PUBLIC SIGNIFICANCE: We provide the most thorough reporting on racial/ethnic, sexual, and gender identities, and sexual orientations for the Eating Disorder Examination - Questionnaire and Clinical Impairment Assessment, and the first reporting on intersections, which fills some of the gaps for commonly used measures of eating-disorder psychopathology. These norms help inform research on the prevention and treatment of eating-disorder psychopathology in underrepresented groups.

Screening for eating disorders across genders in college students: Initial validation of the brief assessment of stress and eating.

Given that eating disorders (EDs) are relatively common in college populations, it is important to have reliable and valid tools to identify students so that they can be referred to evidence-based care. Although research supports the psychometric properties of existing ED screens for identifying cases of EDs, most studies have been conducted in samples of young white-majority women or have not reported the psychometric properties of the screening tool in men. OBJECTIVE: The purpose of the current study was to validate a brief, 10-item screening tool for the identification of EDs-the brief assessment of stress and eating (BASE). METHOD: Participants were college students (N = 596; 68.2% cisgender women) from a large Midwestern university who completed the BASE and SCOFF. The Eating Disorders Diagnostic Survey was used to generate DSM-5 ED diagnoses. We evaluated area under the curve (AUC) for both receiver operating curves (ROC) and precision-recall curves (PRC). RESULTS: Both the BASE and SCOFF performed significantly better than chance at identifying probable EDs in cisgender women (BASE AUC: ROC = .787, PRC = .633, sensitivity = .733, specificity = .697; SCOFF AUC: ROC = .810, PRC = .684, sensitivity = .793, specificity = .701). However, the BASE (AUC: ROC = .821, PRC = .605, sensitivity = .966, specificity = .495) significantly outperformed the SCOFF (AUC: ROC = .710, PRC = .354, sensitivity = .828, specificity = .514) for identifying probable EDs in cisgender college men. DISCUSSION: The BASE is appropriate for student healthcare and college research settings. Because the BASE outperforms the SCOFF in college men, results from the current study are expected to contribute to improved identification of EDs on college campuses. PUBLIC SIGNIFICANCE: The BASE is a new screening tool to identify eating disorders. The BASE performed as well as, if not better than, the SCOFF (particularly in men). Given the need for brief, psychometrically strong, and unbiased ED screening tools in college students, the current study helps address an unmet student healthcare need that we expect will contribute to improved identification of EDs on college campuses.

Translation and validation of the Chinese version of the orthorexia nervosa assessment questionnaires among college students.

PURPOSE: The main objective of the study was to translate, validate, and compare the Chinese ORTO scales (ORTO-15 and ORTO-R). The secondary objective was to assess factors that may be related with risk of orthorexia nervosa (ON). METHODS: Two cross-sectional surveys were conducted on March-to-June 2021 for ORTO-15 and April 2022 for ORTO-R. ORTO questionnaires were translated into Chinese using the forward-backward-forward method. Exploratory factor analysis (EFA), discriminant validity and confirmatory factor analysis (CFA) were used to examine the construct validity of the questionnaires. The internal consistency was assessed using the Cronbach alpha coefficient and the test-retest reliability. Multivariate linear regression analysis was used to explore potential factors related with ON scores. RESULTS: Totally, 1289 and 1084 eligible participants were included for assessment of ORTO-15 and ORTO-R, with the mean age of 20.9 ± 2.0 years and 21.0 ± 2.3 years. The internal consistency of Chinese ORTO-15 scale and ORTO-R scale were both satisfactory (α = 0.79, ICC = 0.79; α = 0.77, ICC = 0.82). However, all ORTO-15 models showed a poor fit using CFA whereas the ORTO-R was characterized by acceptable goodness-of-fit. Multivariate linear regression indicated that physical activities and mental disorders were positively associated with ON risk assessed by both ORTO-R and ORTO-15. CONCLUSION: The Chinese ORTO-R scale was a more reliable tool to screen for ON tendencies than the Chinese version of ORTO-15. Mental disorders and physical activities might be associated with the increased ON risk. LEVEL OF EVIDENCE: Level V (descriptive cross-sectional study).