 The overall anxiety severity and impairment scale, OASIS, is a five-item self-report measure that can be used to assess symptoms of anxiety and associated functional impairments in primary care settings. It has been shown to be psychometrically sound and valid in a German population. However, caution should be taken when comparing groups that differ in age or gender due to potential method effects. This article was authored by Thomas S. Hiller, Sabine Hoffman, Tobias Teisman, and others.