Please assess the completion status of the following clinical trial:

Trial Title: Brief Intervention Study for Quitting Smoking

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

Eligibility Criteria:
Inclusion Criteria:~* Smoker~* Age \> 18 years~* Motivation to quit smoking~Exclusion Criteria:~* severe somatic comorbidity or reduced life expectancy~* severe episode of a psychiatric disease~* reduced cognitive ability~* abuse of alcohol or illicit drugs~* other reasons at the discretion of responsible local study tutor

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Brief advice (Type: ACTIVE_COMPARATOR): A brief advice to stop smoking of about 10 min accompanied with self-help material
- Compact cessation course (Type: EXPERIMENTAL): Cessation intervention of 2 x 120 min in a group setting
- Standard cessation course (Type: ACTIVE_COMPARATOR): Cessation course in a group setting over 6 dates

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