Please assess the completion status of the following clinical trial:

Trial Title: Estimating Apnea Phenotypes From Polysomnography: Oxygen

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: CROSSOVER
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: SINGLE
- Phase: None
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Apnea/hypopnea index \>20 events per hour~* Age 20-79 years~Exclusion Criteria:~* COPD with desaturation (resting SpO2\<96%)~* Use of respiratory stimulants or depressants~* Pregnancy

- Gender: ALL
- Minimum Age: 20 Years
- Maximum Age: 79 Years
- Healthy Volunteers: f

Study Arms:
- Inspired Oxygen First (Type: ACTIVE_COMPARATOR): Participants breathe air with additional inspired oxygen (40%) for 1 night during an overnight sleep study (15 L/min via venturi mask). 1 week later participants will crossover to Sham (sham comparator).
- Sham First (Type: SHAM_COMPARATOR): Participants breathe air without additional inspired oxygen for 1 night during sleep (15 L/min via Venturi mask). 1 week later participants will crossover to Inspire Oxygen (active intervention).

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