Zung Self-Rating Anxiety Scale
The Zung Self-Rating Anxiety Scale (SAS) was designed by William W. K. Zung, a psychiatrist from Duke University, to quantify a patient's level of anxiety.[1] [2]
The SAS scale is designed similar to a customer service survey questionnaire. It is a 20-item self-report assessment device build to measure anxiety levels, based on scoring in 4 groups of manifestations: cognitive, autonomic, motor and central nervous system symptoms. Answering the statements a person should indicate how much each statement applies to him or her. Each question is scored on a Likert-type scale of 1-4 (based on these replies: "a little of the time," "some of the time," "good part of the time," "most of the time"). Overall assessment is done by total score.
The total raw scores range from 20-80. The raw score needs to then be converted into an "Anxiety Index" score using the chart on the test. The Anxiety Index score can then be used on the scale below to determine the clinical interpretation of one's level of anxiety.
- 20-44 Normal Range
- 45-59 Mild to Moderate Anxiety Levels
- 60-74 Marked to Severe Anxiety Levels
- 75-80 Extreme Anxiety Levels
See also
- Zung Self-Rating Depression Scale
- Diagnostic classification and rating scales used in psychiatry
- Taylor Manifest Anxiety Scale