Please assess the completion status of the following clinical trial:

Trial Title: Adipokines in Obese Adolescents With Insulin Resistance

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: PHASE4
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Obesity defined as Body Mass Index (BMI) ≥ percentile 95~* Tanner stage ≥ 2~* Insulin resistance defined as Basal insulin \> 15 µU/mL or Homeostasis Model Assessment index (HOMA) \> 4.5~* Patients' parents signed written consents when they and their adolescent children agreed to enroll~Exclusion Criteria:~* Glucose intolerance~* Diabetes mellitus (type 1 or 2)~* Anemia (Hb \< 10 g/dL)~* Plasma creatinine \> 1.4 mg/dL~* Abnormal hepatic function~* Any associated Disease (Pulmonary, Infection, Autoimmune Disease)~* History of lactic acidosis

- Gender: ALL
- Minimum Age: 9 Years
- Maximum Age: 18 Years
- Healthy Volunteers: f

Study Arms:
- Metformin (Type: EXPERIMENTAL): Tablet of 500 mg metformin, oral every 12 hours (total metformin dose of 1 g/day) for 3 months.
- Placebo (Type: PLACEBO_COMPARATOR): Tablet of 500 mg oral placebo every 12 hours for 3 months.

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