Please assess the completion status of the following clinical trial:

Trial Title: Evaluation of Automatic Oxygen Flow Titration During Walking in Patients With COPD

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: TRIPLE
- Phase: None
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~* Patients older than 40 years~* Moderate to severe COPD according to the Global Initiative for Chronic Obstructive Lung Disease guidelines~* Who did not require long-term oxygen therapy were included in the study.~* Patients were also selected on the basis of known (end-exercise SpO2 \< 90% on a previous exercise test) or suspected (SpO2 \< 95% at rest) desaturation during exercise~Exclusion Criteria:~* Episode of exacerbation or hospitalisation within last four weeks~* Current medical condition that could influence exercise tolerance

- Gender: ALL
- Minimum Age: 40 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Compressed Air (Type: SHAM_COMPARATOR): compressed air delivered at a fixed flow of 2 L/min
- Oxygen constant flow (Type: ACTIVE_COMPARATOR): oxygen delivered at a fixed flow of 2L/min
- Automated oxygen titration (Type: EXPERIMENTAL): oxygen at a variable flows delivered by the FreeO2

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