Brief Description
The Overall Anxiety Severity and Impairment Scale (OASIS) is a brief measure of severity and impairment related to anxiety. The measure can be used across anxiety disorders, with co-occurring anxiety disorders, and with subthreshold symptoms of anxiety. The OASIS is particularly useful for differentiating between those with significant anxiety symptoms from those without (see scoring information below). Respondents rate the severity and impairment of anxiety symptoms during the past week on a scale of 0 to 4, with each response option providing detailed descriptions of severity and impairment associated with symptoms.
Assessment Administration Type
Self-report
Number of questions
5
Age Range for Administration
18+
Recommended Frequency of Administration
Weekly
Summary of Scoring and Interpretations
The OASIS contains 5 items that are scored on a 5-point Likert scale from 0 (lowest severity and impairment) to 4 (highest severity and impairment). A total score is calculated by summing the item responses, with higher scores being associated with more severe and more impairing anxiety.
The Blueprint OASIS measure uses the cut-off score of 8, meaning that a total score of 8 or more suggests significant symptoms of anxiety. Bragdon and colleagues (2016) recommend the following cut off scores:
Total Score | Description of Symptoms |
6-9 | Moderate |
10-11 | Marked |
12+ | Severe |
Blueprint Adjustments
N/A
Clinical Considerations
Estimated completion time: 2-5 minutes.
The OASIS is a valid and reliable measure of anxiety severity and associated impairment in multiple settings (e.g., college, outpatient settings).
Citation
Norman, S. B., Cissell, S. H., 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. https://doi.org/10.1002/da.20182
Relevant Articles + Further Resources
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