Please assess the completion status of the following clinical trial:

Trial Title: Prophylactic Mirtazapine or Dexamethasone for Post-spinal Anesthesia Shivering

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: PREVENTION
- Time Perspective: None
- Masking: DOUBLE
- Phase: PHASE4
- Number of Arms: 3.0

Eligibility Criteria:
Inclusion Criteria:~* on 300 patients aged 18-60 years~* of the American Society of Anesthesiologists (ASA) physical status I or II~* and underwent gynecological surgeries under spinal anesthesia.~* A written informed consent was obtained from all patients to participate in the study.~Exclusion Criteria:~* Patient's refusal,~* duration of surgery more than 120 min,~* obesity with body mass index (BMI) \>35 kg/m2,~* generalized infection or localized infection at level of blockade,~* neurologic disease,~* coagulation disorder,~* patients with hypo- or hyperthyroidism,~* cardiopulmonary disease,~* psychological disorders,~* a need for blood transfusion during surgery,~* an initial body temperature \>38.0C or \<36.0C,~* a known history of alcohol or substance abuse,~* or receiving vasodilators, or medications likely to alter thermoregulation

- Gender: FEMALE
- Minimum Age: 18 Years
- Maximum Age: 60 Years
- Healthy Volunteers: f

Study Arms:
- M (Mirtazapine) (Merta) group:(n=100) (Type: ACTIVE_COMPARATOR): None
- D (Dexamethasone) (Dex) group: (n=100) (Type: ACTIVE_COMPARATOR): None
- C (Control) group: (n=100) (Type: PLACEBO_COMPARATOR): None

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