The following diagnostic systems and rating scales are used in psychiatry and clinical psychology.
For instance, in the category of depression, there are over two dozen depression rating scales that have been developed in the past eighty years.
The Eating Disorder Examination Questionnaire (EDE-Q) is a 28-item self-report questionnaire, adapted from the semi-structured interview, the Eating Disorder Examination (EDE).
The questionnaire is designed to assess the range, frequency and severity of behaviours associated with a diagnosis of an eating disorder.
It is categorised into 4 subscales (Restraint, Eating Concern, Shape Concern and Weight Concern) and an overall global score, with a higher score indicating more problematic eating difficulties(https://www.corc.uk.net/outcome-experience-measures/eating-disorder-examination-questionnaire-ede-q/)