Research or Clinical Assessment Tool Zung self-rating anxiety scale true https://www.ncbi.nlm.nih.gov/pubmed/18209276 self-rating anxiety scale The Zung Self-Rating Anxiety Scale (SAS) is a method of measuring levels of anxiety in patients who have anxiety-related symptoms. The scale focuses on the most common general anxiety disorders; coping with stress typically causes anxiety. The SAS test is self-administered, with each response using a 4-point scale, from ‘none of the time” to “most of the time.” There are 20 questions with 15 increasing anxiety level questions and 5 decreasing anxiety questions. There are two formats, self-evaluations and clinical evaluations.