Lay Summary

1) We test the effects of a 12 week course "Thoughts and Health" aimed to prevent the onset of a first depression, on for 14y old kids in Swedish schools. Does the effect differ if the course is administrated "Online" versus "InRealLife" 2) There is a need to develop digital solutions on the spectrum of mental disorder treatments , to adept to targeted populations and to the future. 3) There is an urgent need to prevent and if possible stop the increase of mental disorder among adolescents.

Background

Despite increased knowledge regarding the aetiology of mood disorders and improvements in psycho-social and pharmacological treatment interventions, depression remains one of the most prevalent problems of adolescents and adults. Adolescents are sensitive and at increased risk of developing a first depression. There are knowledge gaps about the long-term effects of prevention programs against depression for adolescents. Objectives A randomized controlled study among Swedish adolescents in eighth grade, who are at risk of developing depression. The study examines the long-term effects of the "Thoughts and Health" prevention program and whether it is as effective Online as In Real Life (IRL).

Methods

In a first step, about 10 junior high schools in the Västra Götaland region in Sweden will be recruited and randomised into one of two groups. Group 1 - Adolescents at risk of developing depression receive "Thoughts and Health" Online or IRL Group 2 - Adolescents at risk of developing depression receive Treatment as usual ALL students will fill out the self-assessment scale, Childrens Depression Inventory (CDI). Eligible students and their guardians are offered a consulting assessment by primary care psychologist. The assessment includes MINI-KID interview, Psychologists decide inclusion after a diagnostic interview. OUTCOME VARIABLES Quantitative - development of depression is measured via self-assessment instruments and follow-up assessment, by a psychologist. - school attendance and full grades at the end of compulsory school. Qualitative Adolescent's experiences Depending on variable type, T-tests or Chi2 tests will be used for group comparisons.

Results

We will help create evidence for prevention programs against depression and could be used to develop future primary prevention for adolescents both Online and IRL, which will be of great importance to public health.

Conclusion

"Thoughts and Health" can be a useful tool to prevent depression among adolescents