The Daily Assessment of Symptoms – Anxiety (DAS-A) questionnaire was specifically developed to detect reduction of anxiety symptoms in patients with Generalized Anxiety Disorder (GAD) during the first week of treatment. The original version of the instrument was designed for use in clinical trials assessing new pharmaceutical treatments for patients with GAD. The instrument is able to detect symptom changes within 24 hours of treatment. Currently, this is the only GAD specific tool validated to assess symptom improvement sooner than one week following treatment initiation.
References
Daily Assessment of Symptoms – Anxiety Wikipedia(Text) CC BY-SA