Please assess the completion status of the following clinical trial:

Trial Title: CBT Group for Adolescents With ADHD: a Randomized Controlled Trial

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: SINGLE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* DSM-IV ADHD diagnosis~* age between 15 and 21 years~* stabilized doses of medication for ADHD for at least 2 months prior to the study~* agreement not to seek out any other psychiatric or psychological treatment during the study.~Exclusion Criteria:~* affective disorders~* anxiety disorders~* psychotic disorders~* personality disorders~* substance use disorders in the past 6 months~* pervasive developmental disorder~* patients with an IQ lower than 85~* patients receiving concurrent psychological interventions.

- Gender: ALL
- Minimum Age: 15 Years
- Maximum Age: 21 Years
- Healthy Volunteers: f

Study Arms:
- CBT group (Type: EXPERIMENTAL): This group consist on a combined intervention: CBT group + psychopharmacological treatment. The group program was based on cognitive-behavioral principles and also motivational interviewing techniques to facilitate skills implementation. The treatment comprised 12 manualized sessions with an inattention module and an impulsivity module.
- Psychopharmacological treatment (Type: ACTIVE_COMPARATOR): Participants were only visited to monitor their adherence and continuation on medications for ADHD (methylphenidate or atomoxetine) as prescribed by their psychiatrist.

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