Description

The Eating Disorder Diagnostic Scale (EDDS-22) is an assessment tool used for diagnosing eating disorders, such as anorexia nervosa, bulimia nervosa, and binge eating disorder. The EDDS-22 includes questions focusing on symptoms and behaviors associated with eating disorders, such as excessive concern with body weight and shape, binge eating, and excessive exercise or fasting.

Data Analysis and Use

Data analysis from the EDDS-22 includes:
Scoring: Participants respond to questions using a Likert scale, with higher scores indicating more severe eating disorder symptoms. Some questions assess the frequency of specific behaviors.
Statistical Analysis:
Descriptive Statistics: Mean, standard deviation, and score range are used to describe the severity of symptoms in the population.
Correlation: Examines the relationship between EDDS-22 results and other factors, such as age, gender, or mental health.
Comparative Analysis: Analyzes differences between groups based on criteria such as gender or diagnostic categories.

Objective

The objective of the EDDS-22 is to provide a quick and reliable tool for diagnosing eating disorders, facilitating the identification and monitoring of these disorders in clinical or research settings. This tool helps professionals detect individuals who may need immediate intervention or treatment.

Calibration

The calibration of the EDDS-22 is aimed at ensuring that the tool accurately measures eating disorder symptoms in different populations. This process includes:
Cross-Cultural Studies: Testing the EDDS-22 in different cultures to ensure the validity and reliability of the scale across diverse social and cultural settings.
Reliability Analysis: Using Cronbach’s alpha to confirm the internal consistency of the questions.
Validity Testing: Examining whether the EDDS-22 accurately reflects the experiences and symptoms of individuals with eating disorders.

References

Stice, E., & Fisher, M. (2008). An Examination of the Eating Disorder Diagnostic Scale: Criterion and Convergent Validity. Psychological Assessment, 20(3), 272-282.
Garner, D. M., & Garfinkel, P. E. (1979). The Eating Attitudes Test: Psychometric Features and Clinical Correlates. Psychological Medicine, 9(2), 273-279.
American Psychiatric Association. (2013). Diagnostic and Statistical Manual of Mental Disorders (5th ed.). Washington, DC: American Psychiatric Publishing.