Please assess the completion status of the following clinical trial:

Trial Title: A Study of the Effectiveness and Safety of Risperidone Versus Placebo as add-on Therapy to Mood Stabilizers, in the Treatment of Manic Episodes Associated With Bipolar Disorder.

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

Eligibility Criteria:
Inclusion Criteria:~* Patients hospitalized for mania with a score \>=20 on the Young Mania Rating Scale (YMRS). (Patients with symptoms of depression are eligible)~* diagnosis of Bipolar Disorder according to Diagnostic and Statistical Manual of Mental Diseases, 4th edition (DSM-IV)~* receiving treatment with a mood stabilizer for a minimum of 2 weeks prior to study initiation, or beginning therapy with a mood stabilizer prior to treatment with study medication~* patients medically stable on the basis of physical examination, medical history and electrocardiogram results.~Exclusion Criteria:~* Other Axis I DSM-IV diagnosis (except nicotine or caffeine dependence)~* history of alcohol or drug abuse or dependence within 3 months of starting the study~* seizure disorder requiring medication~* known sensitivity to risperidone, lithium, valproate or carbamazepine~* pregnant or nursing females, or those lacking adequate contraception.

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 65 Years
- Healthy Volunteers: f

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