Please assess the completion status of the following clinical trial:

Trial Title: Akershus University Hospital Retrospective Cohort Study of Family Based Treatment

Study Design Characteristics:
- Allocation: None
- Intervention Model: None
- Observational Model: COHORT
- Primary Purpose: None
- Time Perspective: RETROSPECTIVE
- Masking: None
- Phase: None
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~• Clinical diagnosis of F50.0 Anorexia nervosa or F50.1 Atypical anorexia nervosa according to the International Classification of Diseases-10.~Exclusion Criteria:~• Patient was treated during the years 2018-2020 and FBT was never initiated according to patient health records.

- Gender: ALL
- Minimum Age: None
- Maximum Age: None
- Healthy Volunteers: None

Study Arms:
- 2015-2017 (Type: None): Patients treated for anorexia nervosa in the years 2015-2017 at Nedre Romerike outpatient clinic, Department of child and adolescent mental health services, Akershus university hospital.
- 2018-2020 (Type: None): Patients treated for anorexia nervosa in the years 2018-2020 at Nedre Romerike outpatient clinic, Department of child and adolescent mental health services, Akershus university hospital.

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