NCT04815681

Evaluating an Online Wellness Intervention for Greek Adolescents

Evaluating an Online Single-session Intervention for Mental Health and Wellness of Greek Adolescents

• Status: Withdrawn
• Phase: N/A
• Study type: Interventional
• Enrollment: 0 (actual)
• Sponsor: University of Pennsylvania · Academic / Other
• Sex: All
• Age: 13 Years – 20 Years
• Healthy volunteers: Accepted

Summary

The investigators are evaluating the effects of an online single-session mental health intervention (the Common Elements Toolbox; COMET). To evaluate COMET, the investigators are conducting a randomized controlled trial with Greek adolescents attending high school in the Attica region in Greece. Students will be randomized to the COMET condition or to an active control condition. Primary outcome measures (depressive symptoms, anxiety symptoms, subjective well-being) will be measured at two weeks post-intervention and four weeks post-intervention. The investigators will evaluate COMET as a universal intervention (using the full sample) and as a targeted intervention (analyzing those who reported elevated depressive symptoms or anxiety symptoms at baseline).

Conditions

• Depressive Symptoms
• Anxiety
• Happiness

Interventions

Type	Name	Description
BEHAVIORAL	Common Elements Toolbox	COMET is an online unguided self-help intervention that lasts approximately 40-50 minutes.
BEHAVIORAL	Active Control	The active control condition includes an online self-awareness program that lasts approximately 40-50 minutes. Participants in the control condition will receive access to the intervention after data collection for the study has been completed.

Timeline

• Start date: 2021-03-01
• Primary completion: 2022-06-01
• Completion: 2022-12-01
• First posted: 2021-03-25
• Last updated: 2025-06-11

Locations

2 sites across 2 countries: United States, Greece