Please assess the completion status of the following clinical trial:

Trial Title: Online Cognitive Training in PD, MS and Depressed Patients Treated With Electroconvulsive Therapy

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: DOUBLE
- Phase: None
- Number of Arms: 6.0

Eligibility Criteria:
Inclusion Criteria:~General criteria:~* Patients have (access to) a computer with access to the Internet. Patients are capable of using a keyboard and computer mouse.~* Patients are willing to sign informed consent.~PD-specific criteria:~* A compilation score of executive functions (i.e. Stroop, Trail Making Task, Fluency) shows deficit, which lies between 1 and 2 standard deviation (SD) below the mean of healthy Dutch norm population.~* Patients are diagnosed with Parkinson's disease according to the United Kingdom Parkinson's Disease Society Brain Bank criteria.~* Patients are in Hoehn \& Yahr stadium \< 4, and are medically stable during a month prior to the intervention. The medication will be attempted to remain stable for the remainder of the intervention.~* Patients are 50 to 70 years old.~MS-specific criteria:~* A compilation score of episodic memory (i.e. Rey Auditory Verbal Learning Test, Location Learning Test) shows deficit, which lies between 1 and 2 SD below the mean of healthy norm population.~* Patients have been diagnosed with MS for a period longer than three month prior to inclusion in this study according to the renewed McDonald criteria.~* Patients have been on stable medication for at least three months.~* Patients are 30 to 45 years old.~PostECT-specific criteria:~* Unipolar depressive patients indicated for ECT, who experience cognitive complaints after treatment with ECT.~* Patients have undergone the full ECT-procedure.~* Phonemic fluency and autobiographical memory (measured by the Kopelman Autobiographical Interview) show deficit: significant individual deterioration is present (\> 1.5 SD deterioration), accounting for test- retest effects.~* Patients are 50 to 70 years old.~Exclusion Criteria:~General criteria:~* Indications for presence of dementia.~* Presence of traumatic brain injury.~* A psychiatric disorder (in the postECT group: other than unipolar depression).~* No history or presence of drug or alcohol abuse.~* Inability to undergo a neuropsychological assessment (e.g. due to fast fatigue, seeing problems or language barrier).~PD-specific criteria:~- Psychotic symptoms, as screened by the Questionnaire for Psychotic Experiences (QPE). Benign hallucinations with insight are not contraindicated).~MS-specific criteria:~- Patients with MS can't have relapses or can't use corticosteroids 4 weeks prior to the start of the study.~postECT-specific criteria:~- Indications for presence of delirium.

- Gender: ALL
- Minimum Age: 30 Years
- Maximum Age: 70 Years
- Healthy Volunteers: f

Study Arms:
- PD-Experimental (Type: EXPERIMENTAL): PD patients using the online cognitive training for 8 weeks, 3 times a week
- PD-Control (Type: ACTIVE_COMPARATOR): PD patients using the active control condition for 8 weeks, 3 times a week
- MS-Experimental (Type: EXPERIMENTAL): MS patients using the online cognitive training for 8 weeks, 3 times a week
- MS-Control (Type: ACTIVE_COMPARATOR): MS patients using the active control condition for 8 weeks, 3 times a week
- postECT-Experimental (Type: EXPERIMENTAL): Depressed elderly treated with ECT patients using the online cognitive training for 8 weeks, 3 times a week
- postECT-Control (Type: ACTIVE_COMPARATOR): Depressed elderly treated with ECT patients using the active control condition for 8 weeks, 3 times a week

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

Answer: outcome: terminate
termination_type: enrollment issues