Please assess the completion status of the following clinical trial:

Trial Title: Prevention of Adolescent Major Depression

Study Design Characteristics:
- Allocation: NON_RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: PREVENTION
- Time Perspective: None
- Masking: SINGLE
- Phase: None
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~* mild to moderate level depressive symptoms (RBDI self-report scale)~* adequate knowledge of the Finnish language~* informed consent from the adolescent (all) and his/her parent (under 15 years)~* healthy controls comprise subjects with no depressive symptoms~Exclusion Criteria:~* ongoing major depression, dysthymia or bipolar disorder~* ongoing other severe psychiatric illness precluding group participation~* mental retardation

- Gender: ALL
- Minimum Age: 14 Years
- Maximum Age: 16 Years
- Healthy Volunteers: f

Study Arms:
- 1 (Type: EXPERIMENTAL): Group cognitive intervention (the Adolescent Coping with Stress)
- 2 (Type: ACTIVE_COMPARATOR): Treatment as usual
- 3 (Type: ACTIVE_COMPARATOR): Healthy controls, receive usual health education in school health care

Based on this trial design, predict the completion outcome and termination type (if applicable).