Please assess the completion status of the following clinical trial:

Trial Title: ETV Versus Shunt Surgery in Normal Pressure Hydrocephalus

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

Eligibility Criteria:
Inclusion Criteria:~* Patients with NPH~* Meet at least 2 of 3 Hakim and Adams diagnostic criterion for NPH (dementia, gait instability and urinary incontinence)~* Ventriculomegaly defined by CT or MRI, Evans' index \> 0.3~* Clinical improvement after 3 day trial of CSF drainage.~* MMSE\>24~* Informed consent from patient

- Gender: ALL
- Minimum Age: 50 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Shunt Arm (Type: None): Ventriculoperitoneal Shunt
- ETV arm (Type: None): Endoscopic Third Ventriculostomy

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