Please assess the completion status of the following clinical trial:

Trial Title: Ataxia in Essential Tremor: Describing the Differences Between Disease Process and Treatment Effect

Study Design Characteristics:
- Allocation: None
- Intervention Model: None
- Observational Model: CASE_CONTROL
- Primary Purpose: None
- Time Perspective: CROSS_SECTIONAL
- Masking: None
- Phase: None
- Number of Arms: None

Eligibility Criteria:
Inclusion Criteria:~* Essential Tremor diagnosis at least 3 years duration~* Absence of other neurological signes (such as dystonia, ataxia, or Parkinsonism)~* Patients must be able to walk 2 minutes unassisted.~* Patients must be able to understand and consent to be in the study.~Exclusion Criteria:~* Patients who have had changes in DBS settings within the last 3 months.~* Patients who have had no initial improvement or response to DBS.~* ET medication changes in the last month.~* Actively abusing alcohol.~* A neurologic diagnosis other than ET that in the investigator's opinion could affect gait and/or balance.~* Atypical tremor disorder including by not limited to tremor due to multiple sclerosis, medication-induced tremor, Parkinson's disease, or parkinsonian syndrome.~* Dementia

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 80 Years
- Healthy Volunteers: f

Study Arms:
- ET (DBS-, Ataxia+) (Type: None): Essential Tremor without DBS with Ataxia on examination
- ET (DBS-, Ataxia-) (Type: None): Essential Tremor without DBS and without Ataxia on examination
- ET (DBS+, Ataxia+) (Type: None): Essential Tremor with DBS with Ataxia on examination
- ET (DBS+, Ataxia-) (Type: None): Essential Tremor with DBS without Ataxia

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