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Development and validation of the schedule for the assessment of insight in eating disorders (SAI-ED)

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George Konstantakopoulos, Georgios Georgantopoulos, Fragiskos Gonidakis, Ioannis Michopoulos, Pentagiotissa Stefanatou, Anthony S. David

Original languageEnglish
Article number113308
JournalPsychiatry Research
Volume292
DOIs
PublishedOct 2020

King's Authors

Abstract

This study examined the reliability, validity and internal structure of the newly developed, interview-based Schedule for the Assessment of Insight in Eating Disorders (SAI-ED) and the relationships of insight with demographic and clinical characteristics in EDs. Ninety-four female patients – 44 with anorexia nervosa (AN) and 50 with bulimia nervosa (BN) – were assessed with SAI-ED. The Brown Assessment of Beliefs Scale was used to evaluate convergent validity of SAI-ED. Hierarchical cluster analysis and multidimensional scaling were used to identify insight components and assess their inter-relationships. The final 8-item SAI-ED demonstrated good psychometric properties. Inter-rater and test-retest reliabilities were high. Three subscales of SAI-ED were identified which measure major insight components: awareness of illness, awareness of symptoms, and treatment engagement. Patients with AN had significant lower score on SAI-ED than patients with BN. Impaired insight was associated with: (a) lower current and lowest lifetime BMI and more severe dietary restrain in AN, (b) illness duration, severity of overall ED symptoms, body-related concerns and obsessionality in BN. Insight is a multidimensional construct in EDs associated with different clinical aspects in AN and BN. The SAI-ED is a valid and reliable tool for the assessment of insight in EDs patients.

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