Please assess the completion status of the following clinical trial:

Trial Title: Effect of High Rebound Mattress Toppers on Sleep and Sleep-Related Symptoms

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

Eligibility Criteria:
Inclusion Criteria:~* Adults Age 18-65 who are scheduled for a diagnostic sleep study at the Stanford Sleep Clinic for sleep disorders (including but not limited to, insomnia, Sleep Apnea or other sleep disorder symptoms).~Exclusion Criteria:~* Individuals with a history of having difficulty swallowing food or large capsules. We will not be able to enroll individuals with any known or suspected obstructive disease of the gastrointestinal tract including, but not limited to esophageal stricture, diverticulosis and inflammatory bowel disease (IBD), peptic ulcer disease, Crohn's disease, ulcerative colitis, previous gastrointestinal surgery.~* Individuals who are pregnant.~* Individuals who are unable to provide informed consent (i.e. decisionally impaired).

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 65 Years
- Healthy Volunteers: f

Study Arms:
- Low rebound mattress toppers (Type: EXPERIMENTAL): sleep with mattress topper during overnight diagnostic sleep study
- High rebound mattress toppers (Type: EXPERIMENTAL): sleep with mattress topper during overnight diagnostic sleep study

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