Please assess the completion status of the following clinical trial:

Trial Title: An Investigational Drug Study in Patients With Type 2 Diabetes Mellitus (MK0431-023)

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: DOUBLE
- Phase: PHASE3
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~* Patients at least 18 years of age and not older than 75 who have a specific type of diabetes called Type 2 Diabetes Mellitus~Exclusion Criteria:~* Younger than 18 years of age or older than 75~* Any condition, which in the opinion of the investigator, may not be in the patient's best interest to participate

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 75 Years
- Healthy Volunteers: f

Study Arms:
- Sitagliptin 100 mg (Type: EXPERIMENTAL): Sitagliptin 100 mg
- Sitagliptin 200 mg (Type: EXPERIMENTAL): Sitagliptin 200 mg
- Placebo/Pioglitazone (Type: PLACEBO_COMPARATOR): Placebo/Pioglitazone

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