Factor structure of the Eating Disorder Inventory-C.

Area of Science:

• Psychiatry
• Psychometrics
• Child and Adolescent Mental Health

Background:

• The Eating Disorder Inventory-C (EDI-C) is a key tool for assessing eating disorder symptoms in children and adolescents.
• It is adapted from the adult EDI-2, but its psychometric properties in pediatric populations are unexamined.
• Existing research has well-established the psychometric properties of the EDI and EDI-2.

Purpose of the Study:

• To determine the factor structure of the EDI-C questionnaire in a pediatric sample.
• To evaluate the reliability and validity of the EDI-C's factor structure for children.
• To provide a psychometrically sound instrument for assessing eating disorders in youth.

Main Methods:

• A sample of 898 children aged 9-16 years from a nonclinical population completed the EDI-C.
• The study was conducted in a school setting.
• Factor analysis was used to examine the underlying structure of the EDI-C.

Main Results:

• The original 11-factor structure of the EDI-2 was not replicated.
• Analysis revealed a 5-factor structure with high reliability after removing 27 items with low communality.
• These findings suggest a potential modification to the EDI-C's subscale structure.

Conclusions:

• The original 11-factor structure of the EDI-C may exhibit low reliability in children.
• A modified 5-factor subscale structure is proposed for improved assessment of eating disorder symptoms in pediatric populations.
• This revised structure offers a more reliable tool for clinicians and researchers.