Please assess the completion status of the following clinical trial:

Trial Title: The Effects of Methylphenidate on the Cognitive Function of Older People With Mild Cognitive Impairment

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

Eligibility Criteria:
Inclusion Criteria:~* \>65 years old~* Male and Female~* Living in the community~Exclusion Criteria:~* Suffer from unstable conditions, for example, unstable heart disease, severe heart failure, severe renal failure, cirrhosis, blood pressure above 160/100;~* patient who suffer from glaucoma, hyperthyroididsm, epilepsy, patients after stroke, patient with Parkinson's disease, major depression, schizophrenia or receiving neuroleptic drugs;~* patient who suffer from dementia~* patients that recieve treatment in acetylcholinesterase inhibitors or memantine.~* known sensitivity to methylphenidate.

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

Study Arms:
- Methylphenidate (Type: EXPERIMENTAL): On the intervention days (days 2-4) participants will undergo cognitive assessment at 9:00 in the morning, followed by the administration (at 10:30) of different doses of Ritalin (10, 20 and 30mg) every day of intervention. Two hours after taking the drug participants will be assessed cognitively by means of Mindstreams and MoCA (Montreal Cognitive Assessment).
- Placebo (Type: PLACEBO_COMPARATOR): Participants in the control group will receive placebo. On the intervention days (days 2-4) participants will undergo cognitive assessment at 9:00 in the morning, followed by the administration (at 10:30) of Placebo every day of intervention. Two hours after taking the placebo participants will be assessed cognitively by means of Mindstreams and MoCA (Montreal Cognitive Assessment).

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