Eating Disorder Symptom Severity Scale: A New Clinician Rated Measure

This study describes the development and validation of the clinician-rated Eating Disorder Symptom Severity Scale (EDS3), created to address a gap in measurement options for youth with eating disorders. The EDS3 is modeled on the Childhood Severity and Acuity of Psychiatric Illness Scales (Lyons, J. S, 1998 Lyons, J. S. 1998. “The Severity and Acuity of Psychiatric Illness Scales Manual – Child and adolescent version”. In San Antonio, Harcourt Brace & Company, TX: The Psychological Corporation. [Google Scholar]). Factor analysis revealed a 5-factor solution and accounted for 78% of the variance, and internal consistency within the subscales was good (Cronbach alphas: 0.69 to 0.93). The EDS3 is a valid and reliable measure designed for clinicians to help assess the severity of a youth's eating disorder and to facilitate outcomes research.