The Efficacy of a Mobile Application for Treating Depression and Anxiety Symptoms

This was a 12-week, parallel randomised controlled trial, including a 6-week follow-up. The trial compared a group of university students (N = 84) receiving a mobile CBT application intervention (\"Feel Stress Free\") to a wait-list control group (N = 84) receiving no intervention. Participants were asked to complete the Hospital Anxiety and Depression Scale (HADS) and the Patient Health Questionnaire (PHQ-9) at baseline (as part of the screening questionnaire) and then fortnightly for the 12 weeks. Although blinding was not possible owing to the nature of a wait list control group, researchers did not have any face-to-face contact with the participants, as recruitment and participation in the study was entirely completed online.