TY - JOUR
T1 - Validity of the Yale Food Addiction Scale for Children (YFAS-C)
T2 - Classical test theory and item response theory of the Persian YFAS-C
AU - Lin, Chung Ying
AU - Imani, Vida
AU - Griffiths, Mark D.
AU - Pakpour, Amir H.
N1 - Publisher Copyright:
© 2020, The Author(s).
PY - 2021/6
Y1 - 2021/6
N2 - Purpose: To examine whether the child/adolescent version of the Yale Food Addiction Scale (YFAS-C) is valid to assess the Iranian adolescents who are overweight. Methods: After using an internationally standardized method to translate the YFAS-C into Persian, 1186 overweight/obese adolescents aged between 13 and 18 years participated in the present study [666 males; mean age = 15.5 (SD = 1.9) years; zBMI = 2.5 (1.0) kg/m2]. All the participants completed the Persian YFAS-C alongside Persian versions of the following scales: Eating Disorder Examination Questionnaire (EDEQ), Clinical Impairment Assessment (CIA), Binge Eating Scale (BES), Eating Attitudes Test (EAT-26), and Depression, Anxiety, Stress Scale (DASS-21). Results: At the scale level, confirmatory factor analysis verified the single-factor structure of the Persian YFAS-C. Additionally, the Persian YFAS-C had promising properties regarding internal consistency (KR20 = 0.81), test–retest reliability (intraclass correlation coefficient = 0.83), separation reliability (person separation reliability = 0.77; item separation reliability = 0.98), and separation index (person separation index = 2.04; item separation index = 8.01). At the item level, all items had satisfactory properties in factor loadings, corrected item-total correlation, test–retest reliability, and infit and outfit mean square. Moreover, no substantial differential item functioning (DIF) was found concerning gender (male vs. female) or weight status (overweight vs. obesity). Significant and moderate correlations were found between the Persian YFAS-C and other psychometric scales assessing eating symptomatology and general psychopathology (r = 0.352 to 0.484). Conclusion: The Persian YFAS-C is a valid instrument that assists healthcare providers in assessing food addiction among Iranian adolescents. Level of evidence: Level V, cross-sectional descriptive study.
AB - Purpose: To examine whether the child/adolescent version of the Yale Food Addiction Scale (YFAS-C) is valid to assess the Iranian adolescents who are overweight. Methods: After using an internationally standardized method to translate the YFAS-C into Persian, 1186 overweight/obese adolescents aged between 13 and 18 years participated in the present study [666 males; mean age = 15.5 (SD = 1.9) years; zBMI = 2.5 (1.0) kg/m2]. All the participants completed the Persian YFAS-C alongside Persian versions of the following scales: Eating Disorder Examination Questionnaire (EDEQ), Clinical Impairment Assessment (CIA), Binge Eating Scale (BES), Eating Attitudes Test (EAT-26), and Depression, Anxiety, Stress Scale (DASS-21). Results: At the scale level, confirmatory factor analysis verified the single-factor structure of the Persian YFAS-C. Additionally, the Persian YFAS-C had promising properties regarding internal consistency (KR20 = 0.81), test–retest reliability (intraclass correlation coefficient = 0.83), separation reliability (person separation reliability = 0.77; item separation reliability = 0.98), and separation index (person separation index = 2.04; item separation index = 8.01). At the item level, all items had satisfactory properties in factor loadings, corrected item-total correlation, test–retest reliability, and infit and outfit mean square. Moreover, no substantial differential item functioning (DIF) was found concerning gender (male vs. female) or weight status (overweight vs. obesity). Significant and moderate correlations were found between the Persian YFAS-C and other psychometric scales assessing eating symptomatology and general psychopathology (r = 0.352 to 0.484). Conclusion: The Persian YFAS-C is a valid instrument that assists healthcare providers in assessing food addiction among Iranian adolescents. Level of evidence: Level V, cross-sectional descriptive study.
UR - http://www.scopus.com/inward/record.url?scp=85087994370&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85087994370&partnerID=8YFLogxK
U2 - 10.1007/s40519-020-00956-x
DO - 10.1007/s40519-020-00956-x
M3 - Article
C2 - 32676845
AN - SCOPUS:85087994370
SN - 1124-4909
VL - 26
SP - 1457
EP - 1466
JO - Eating and Weight Disorders
JF - Eating and Weight Disorders
IS - 5
ER -