Please assess the completion status of the following clinical trial:

Trial Title: Duloxetine as an Analgesic Agent in Patients Undergoing Elective Spine Surgery

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

Eligibility Criteria:
Inclusion Criteria:~* Patients were included, of both genders, aged between 18 and 70 years and American Society of Anesthesiologists (ASA) physical status 1-3 and were eligible for the study~Exclusion Criteria:~* Patients allergics to duloxetine, ketoralac or fentanyl, pre-existing history of use of illegal substances or alcohol in an abusive manner and abnormal kidney or liver function tests.

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 70 Years
- Healthy Volunteers: t

Study Arms:
- Group C (control) (Type: EXPERIMENTAL): subjects who will receive one capsule of placebo before the surgery and being repeated the next day
- Group D (duloxetine) (Type: ACTIVE_COMPARATOR): subjects who will receive one capsule of duloxetine 60 mg before the surgery and being repeated the next day

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