Please assess the completion status of the following clinical trial:

Trial Title: Efficacy and Safety Study of Methylphenidate Hydrochloride Extended Release in Adults With Childhood-onset Attention Deficit/Hyperactivity Disorder (ADHD)

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: TRIPLE
- Phase: PHASE3
- Number of Arms: 4.0

Eligibility Criteria:
Inclusion criteria:~1. Diagnosis of attention deficit/hyperactivity disorder (ADHD) which started in childhood~2. Female patients of childbearing potential must be practicing an acceptable method of contraception.~Exclusion criteria:~1. Patients with body mass index (BMI) less than 18.5 kg/m2 or more than 35 kg/m2~2. History of alcohol or substance abuse within the last six months.~3. History of seizures or use of anticonvulsant medication.~4. Any psychiatric condition that requires medication or may interfere with study participation.~5. Pre-existing cardiovascular disorders including severe hypertension, heart failure, myocardial infraction, etc.~6. Significant respiratory, hepatic, gastrointestinal, renal, hematological or oncologic disorder~7. Diagnosis of glaucoma, hyperthyroidism, pheochromocytoma~8. Diagnosis or family history of Tourette's syndrome~9. Pre-existing cerebrovascular disorders such as cerebral aneurysm, vascular abnormalities including vasculitis or stroke~Other protocol-defined inclusion/exclusion criteria may apply

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 60 Years
- Healthy Volunteers: f

Study Arms:
- Ritalin LA 40 mg (Type: EXPERIMENTAL): In period 1 patients were given Ritalin LA 20 mg and up titrated to 40 mg at week 2, continued in same dose till week 9. Period 2- The dose of study medication was re-titrated for all patients (including those in the Placebo arm during Period 1) starting at 20 mg/day Ritalin LA and increased at weekly intervals in increments of 20 mg/day until reaching the patient's optimal dose 40 mg. Optimal dose was defined as the dose at which the investigator considered an optimal balance between control of symptoms and side effects was maintained for a period of at least one week prior to Week 14. In period 3, patients were re- randomized to either their optimal dose of medication (40, 60, or 80 mg/day) or Placebo from beginning of week 15 to end of week 40.
- Ritalin LA 60 mg (Type: EXPERIMENTAL): In period 1 patients were given Ritalin LA 20 mg and up titrated to 40 mg at week 2 and to 60 mg at week 3. Period 2- The dose of study medication was re-titrated for all patients (including those in the Placebo arm during Period 1) starting at 20 mg/day Ritalin LA and increased at weekly intervals in increments of 20 mg/day until reaching the patient's optimal dose 60 mg. Optimal dose was defined as the dose at which the investigator considered an optimal balance between control of symptoms and side effects was maintained for a period of at least one week prior to Week 14.In period 3, patients were re- randomized to either their optimal dose of medication (40, 60, or 80 mg/day) or Placebo from beginning of week 15 to end of week 40.
- Ritalin LA 80 mg (Type: EXPERIMENTAL): In period 1 patients were given Ritalin LA 20 mg and up titrated to 40 mg at week 2 and to 60 mg at week 3 and to 80 mg at week 4. Period 2- The dose of study medication was re-titrated for all patients (including those in the Placebo arm during Period 1) starting at 20 mg/day Ritalin LA and increased at weekly intervals in increments of 20 mg/day until reaching the patient's optimal dose 60 mg. Optimal dose was defined as the dose at which the investigator considered an optimal balance between control of symptoms and side effects was maintained for a period of at least one week prior to Week 14. In period 3, patients were re- randomized to either their optimal dose of medication (40, 60, or 80 mg/day) or Placebo from beginning of week 15 to end of week 40.
- Placebo (Type: PLACEBO_COMPARATOR): Period 1- Placebo controlled Period 2 - The dose of study medication was re-titrated for all patients (including those in the Placebo arm during Period 1) starting at 20 mg/day Ritalin LA and increased at weekly intervals in increments of 20 mg/day until reaching the patient's optimal dose (40, 60 or 80 mg). In period 3, patients were re- randomized to either their optimal dose of medication (40, 60, or 80 mg/day) or Placebo from beginning of week 15 to end of week 40.

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