Please assess the completion status of the following clinical trial:

Trial Title: A Study to Test the Safety and Efficacy of Sitagliptin Compared to Glimepiride in Patients With Type 2 Diabetes on a Stable Dose of Metformin (0431-803)(COMPLETED)

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: DOUBLE
- Phase: PHASE3
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* 18 years or older~* Diagnosed with type 2 diabetes~* On a stable dose of metformin of at least 1500 mg per day~Exclusion Criteria:~* History of type 1 diabetes~* Pregnant~* HIV positive~* On a weight loss program or medication~* Has a history of blood disorder, certain cancers, heart, liver or kidney disease

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- 1 (Type: EXPERIMENTAL): sitagliptin
- 2 (Type: ACTIVE_COMPARATOR): glimepiride

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