Please assess the completion status of the following clinical trial:

Trial Title: Efficacy of a Mechanical Chair for Treatment of Benign Paroxysmal Positional Vertigo (BPPV)

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

Eligibility Criteria:
Inclusion Criteria:~* All adult patients identified with BPPV through the Vanderbilt Balance Disorders Clinic or diagnosed with BPPV by Vanderbilt Otolaryngology will be eligible for inclusion.~Exclusion Criteria:~* Patients without BPPV. Also, the mechanical chair is contraindicated for for patients weighing over 330 lbs, patients presenting with unusual headache symptoms, uncontrolled high blood pressure or some associated neurological symptoms or any other atypical findings. It must not be used if the patient has undergone neurosurgery or cardiac surgery within the past month.

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Standard Repositioning (Type: ACTIVE_COMPARATOR): Participants randomly selected for this treatment arm will undergo standard BPPV treatments (canalith repositioning procedure) without the mechanical chair.
- Mechanical Chair Repositioning (Type: EXPERIMENTAL): Participants randomly selected for this treatment arm will undergo standard BPPV treatments (canalith repositioning procedure) with the mechanical chair.
- Sham Treatment (Type: SHAM_COMPARATOR): Participants randomly selected for the sham arm will undergo be strapped into the mechanical chair as for the treatment arm but will only undergo the test positions for BPPV-the Dix-Hallpike maneuver. No BPPV repositioning treatment will be completed at the first encounter. At the follow-up visit, standard BPPV treatments (canalith repositioning procedure) will be completed.

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