The self-esteem booster: A randomized controlled trial investigating a mobile-based intervention in students with depressive symptoms (Preprint)
BACKGROUND Depressive symptoms are one of the most common and ever increasing mental health problems among students worldwide. Conventional treatment options, particularly psychotherapy, do not reach all students in need for help. Internet- and mobile-based interventions are promising alternatives for narrowing the treatment gap. OBJECTIVE In the framework of a randomized controlled trial, we investigated the effectiveness, acceptance and side effects of a self-help smartphone app (MCT & More) based on techniques of cognitive behavioral therapy (CBT), mindfulness, acceptance and commitment therapy, and metacognitive training (MCT) in a sample of students with self-reported depressive symptoms. Furthermore, we were interested in examining the influence of treatment expectations and attitudes towards internet- and mobile-based interventions on treatment adherence and effectiveness. METHODS A total of 400 students were recruited via open access websites and randomized to either the intervention group (n = 200), who received access to the self-help smartphone app "MCT & More" for a period of four weeks, or to a wait list control group (n = 200). The PHQ-9 (depression) served as primary outcome parameter, the RSE (self-esteem) and the global item of the WHOQOL-BREF (quality of life) as secondary outcome parameters. The APOI was used to measure attitudes towards internet- and mobile-based interventions. Outcome expectations were assessed with the PATHEV and side effects with the INEP. RESULTS Per-protocol (PP), complete-case (CC) and intention-to-treat (ITT) analyses showed a significantly higher reduction in depressive symptoms (PP: F(1,222) = 3.98, P = .047, d = .26) and a significantly higher increase in self-esteem (PP: F(1,220) = 8.79, P = .003, d = .77) within the intervention group compared to the wait list control group. Most participants used the self-help smartphone app regularly (76 % at least once a week). The more positive the attitude towards internet- and mobile-based interventions (r = .260, P = .004) and the more positive the outcome expectation (r = .236, P = .009), the more frequently the self-help smartphone app was used. CONCLUSIONS The effectiveness of the self-help smartphone app "MCT & More" was demonstrated among students with depressive symptoms compared to a wait list control group. The app could be offered regularly as a low-threshold intervention to enhance students' health. CLINICALTRIAL German Clinical trials Register (DRKS00020941); https://www.drks.de/drks_web/navigate.do?navigationId=trial.HTML&TRIAL_ID=DRKS00020941