Please assess the completion status of the following clinical trial:

Trial Title: The Effect of Anticholinesterase Drugs on Sleep in Alzheimer's Disease Patients

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: DOUBLE
- Phase: PHASE4
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Diagnosis of Alzheimer's disease based on the probability criteria of the Alzheimer's Disease and Related Disorders Association~* Rated 1 and 2 (mild to moderate level) on the Brazilian version of the Clinical Dementia Rating~Exclusion Criteria:~* Other causes of dementia~* Other severe medical or psychiatric disease~* Clinical indication of psychoactive drugs other than experimental drug

- Gender: ALL
- Minimum Age: 50 Years
- Maximum Age: 90 Years
- Healthy Volunteers: f

Study Arms:
- A (Type: EXPERIMENTAL): Donepezil treated Alzheimer patients
- B (Type: PLACEBO_COMPARATOR): Placebo treated Alzheimer patients

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