Please assess the completion status of the following clinical trial:

Trial Title: Burden of Obstructive Sleep Apnea in Stroke (BOSAST)

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: SUPPORTIVE_CARE
- Time Perspective: None
- Masking: DOUBLE
- Phase: PHASE4
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* stroke survivor in stroke rehabilitation unit~* age 45-85~* able to consent~* no prior treatment with CPAP~Exclusion Criteria:~* complex apnea~* known inflammatory disease~* neurological disease precluding patient's ability to consent and cooperate

- Gender: ALL
- Minimum Age: 45 Years
- Maximum Age: 85 Years
- Healthy Volunteers: f

Study Arms:
- CPAP (Type: ACTIVE_COMPARATOR): CPAP at therapeutic pressure
- sub-therapeutic CPAP (Type: SHAM_COMPARATOR): CPAP administered at sub-therapeutic pressure

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