Please assess the completion status of the following clinical trial:

Trial Title: Comparative Research of Alzheimer's Disease Drugs

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:~* older adults with a diagnosis of possible or probable Alzheimer's disease~* planning to initiate treatment with a cholinesterase inhibitor~* planning to continue care in the memory care practice~* participation by a family caregiver willing to complete the study outcome assessments~* access to a telephone~* ability to understand English-Language survey instruments~Exclusion Criteria:~• prior serious adverse event from the study medications

- Gender: ALL
- Minimum Age: 65 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Donepezil (Type: EXPERIMENTAL): See intervention note.
- Galantamine (Type: EXPERIMENTAL): See intervention note.
- Rivastigmine (Type: EXPERIMENTAL): See intervention note.

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