Please assess the completion status of the following clinical trial:

Trial Title: Strongest Predictors of a Positive Outcome After Physiotherapy for Knee Osteoarthritis

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

Eligibility Criteria:
Inclusion Criteria:~1. Clinical and radiological osteoarthritis of the knee and referred to physiotherapists.~2. Symptomatic daily during the last month.~3. Symptomatic for more than one year.~4. Able to walk up and down a flight of 10 stairs with or without walking aids.~5. Able to walk 3 stairs up and down without walking aids.~6. Understand Norwegian orally and in writing.~7. Body mass index below 35.~Exclusion Criteria:~1. Neurological, rheumatic, orthopedic, or respiratory diagnosis, other than osteoarthritis of the knee which can negatively affect the walking ability, balance or pain.~2. Body mass index above or equal to 35.~3. Fracture of the femur or shank, or arthroscopic surgery in the osteoarthritic knee.~4. Chronic generalized pain (American College of Rheumatology Criteria, 2010).~5. Inability to understand Norwegian language.

- Gender: ALL
- Minimum Age: 45 Years
- Maximum Age: 70 Years
- Healthy Volunteers: f

Study Arms:
- knee osteoarthritis (Type: None): Patients with knee osteoarthritis after having started physical therapy

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