Please assess the completion status of the following clinical trial:

Trial Title: Efficacy and Safety Study of NKTR-181 in Opioid-Naive Subjects With Low Back Pain

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: QUADRUPLE
- Phase: PHASE3
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~* Male or non-pregnant, non-nursing female aged 18 to 75 years old~* Clinical diagnosis of moderate to severe, chronic non-neuropathic low back pain for at least six months~* Not experiencing adequate pain relief or have failed previous treatment with non-opioid analgesics~* Opioid analgesia is necessary~* Currently taking no more than 10 mg morphine sulfate equivalents per day of short acting opioids for 14 days prior to entry~* Females of child bearing potential must be using a highly effective form of birth control. All subjects must agree to use double-barrier contraception during participation in this study and for at least 2 months after the last dose of the study drug.~* Willing and able to provide informed consent~Exclusion Criteria:~* Taking extended release or long-acting opioids within 6 months~* History of hypersensitivity, intolerance, or allergy to opioids~* Compression of spinal nerve root; spinal fracture, tumor, or abscess~* Surgical procedures on the low back in the last 12 months or facet nerve root block or radiofrequency ablation in the last 3 months~* Untreated moderate to severe sleep apnea

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

Study Arms:
- NKTR-181 (Type: EXPERIMENTAL): NKTR-181 twice daily (BID) tablets
- Placebo (Type: PLACEBO_COMPARATOR): Placebo to match NKTR-181 twice daily (BID) tablets

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