Psychometric properties of an Arabic translation of the Nine Item Avoidant/Restrictive Food Intake Disorder Screen (NIAS) in a community sample of adults

Abstract

Background

No epidemiological data is yet available on Avoidant/Restrictive Food Intake Disorder (ARFID) in Arab countries, which may in part be due to the lack of measures available in Arabic language. This constitutes a major obstacle to further progress of our understanding of the nature, aetiology, course, treatment, and prevention of ARFID, especially as some evidence suggested that ARFID may vary across cultures and food environments. We aimed to contribute to the literature in the eating disorders field by examining the psychometric properties of an Arabic translation of the Nine Item ARFID Screen (NIAS).

Method

This was a cross-sectional, web-based study. A total of 515 Lebanese community adults (mean age of 27.55 ± 10.92 years, 69.9% females) participated. The forward–backward method was adopted to translate the NIAS from English to Arabic.

Results

Confirmatory Factor Analyses provided evidence for the adequate fit indices for the three-factor model (i.e., Picky eating, Fear, and Appetite) and the 9-item version of the NIAS. An adequate reliability of the Arabic NIAS was achieved, with McDonald’s ω ranging from .75 to .90 for the total score and all three subscores. Multi-group analyses demonstrated measurement invariance by sex (males vs. females) and weight groups (underweight/healthy weight [BMI ≤ 25] vs. overweight/obese [BMI > 25]) at the configural, metric, and scalar levels. Adequate patterns of correlations between the NIAS and measures of disordered eating symptoms, psychological distress and well-being were seen. In particular, fear was significantly associated with non-ARFID disordered eating symptoms. Appetite and Picky eating, but not Fear, were inversely correlated with well-being. All three NIAS subscores and the total score were positively correlated with psychological distress.

Conclusion

Findings provided evidence that the Arabic NIAS is a short, valid and reliable self-report measure to screen for ARFID symptoms. In light of these findings, we recommend its use for clinical and research purposes among Arabic-speaking adults.

Abstract

Avoidant/restrictive food intake disorder (ARFID) is an eating disorder characterized by food avoidance or dietary restriction associated with at least one of four consequences––weight loss, nutritional deficiency, nutritional supplement dependence, and/or psychosocial impairment. The Nine Item ARFID Screen (NIAS) was developed as a screening measure to detect ARFID symptoms and has nine items with three subscales that map onto symptoms of each ARFID presentation. The NIAS have been translated into multiple languages but not yet validated in Arabic. To that end, we aimed to translate and validate the Arabic version of the NIAS in the present study, which would in turn facilitate improved research and clinical practices related to ARFID in Arabic-speaking nations. The present findings provide support for the psychometric properties of the Arabic version of the NIAS in examining ARFID in Arabic-speaking adults in Lebanon.