Please assess the completion status of the following clinical trial:

Trial Title: A Study of Sitagliptin in Patients With Type 2 Diabetes Mellitus Who Have Inadequate Glycemic Control on Diet/Exercise Therapy (0431-054)(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:~* Patients have type 2 diabetes mellitus on diet/exercise therapy~Exclusion Criteria:~* Patients have type 1 diabetes mellitus

- Gender: ALL
- Minimum Age: 20 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- Sitagliptin 50 mg QD (Type: EXPERIMENTAL): sitagliptin 50 mg orally once daily (QD=once daily)
- Voglibose 0.2 mg TID (Type: ACTIVE_COMPARATOR): voglibose 0.2 mg orally three times daily (TID= three times daily)

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