Overall Anxiety Severity and Impairment Scale (OASIS)
Recommended frequency: Every 2 weeks
Summary
The Overall Anxiety Severity and Impairment Scale (“OASIS”) is a brief continuous measure of overall anxiety severity and impairment. The OASIS can be used across anxiety disorders, with multiple anxiety disorders, and with sub-threshold anxiety symptoms. This instrument is 5 questions long and well validated in multiple settings and populations.
Psychometric Properties of the OASIS
A cut-score of 8 correctly classifies 87% of a clinical population sample as having an anxiety diagnosis or not.
Sources:
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The following questions ask about anxiety and fear. For each question, select the number for the answer that best describes your experience over the past week.
Scoring the OASIS
Response items are coded from 0 to 4 and can be summed to obtain a total score range from 0 to 20. Research indicates that an OASIS score of 8 or higher effectively identifies individuals with an anxiety disorder.
Copyright Information
Norman, S. B., Hami Cissell, S., Means‐Christensen, A. J., & Stein, M. B. (2006). Development and validation of an overall anxiety severity and impairment scale (OASIS). Depression and anxiety, 23(4), 245-249.
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