Please assess the completion status of the following clinical trial:

Trial Title: Treatment of Apogeotropic Horizontal Canal Benign Paroxysmal Positional Vertigo

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: DOUBLE
- Phase: PHASE2
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~1. history of vertigo associated with changes in head position~2. direction-changing horizontal nystagmus beating toward the uppermost ear (apogeotropic nystagmus) in both turning positions detected with Frenzel glasses or videoculography in the Head turning test~3. vertigo associated with the elicited nystagmus~4. symptom within 2 weeks~5. put one's signature on consent~Exclusion Criteria:~1. patients with identifiable central nervous system disorders that could explain the positional vertigo and nystagmus~2. the patients with apogeotropic form which was transited from geotropic after previous therapeutic maneuvers~3. the patients who transited from apogeotropic from vertical canal BPPV during study~4. patients who had possible cause of secondary BPPV such as Meniere's disease, migraine or recent trauma history~5. patients whose affected ear cannot be identified~6. patients with multiple canal atypical positional nystagmus or who were treated previously with repositioning maneuvers were excluded.~7. patients with cervical or lumbar spine problem

- Gender: ALL
- Minimum Age: 19 Years
- Maximum Age: 80 Years
- Healthy Volunteers: f

Study Arms:
- Gufoni (Type: EXPERIMENTAL): Gufoni maneuver for apogeotropic horizontal BPPV at the first day
- Vibration (Type: EXPERIMENTAL): Vibration maneuver for apogeotropic horizontal BPPV at the first day
- Sham (Type: SHAM_COMPARATOR): Sham maneuver for apogeotropic horizontal BPPV at the first day

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