Please assess the completion status of the following clinical trial:

Trial Title: Certolizumab Pegol in Subjects With Active Axial Spondyloarthritis

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: DOUBLE
- Phase: PHASE3
- Number of Arms: 7.0

Eligibility Criteria:
Inclusion Criteria:~* Documented diagnosis of adult-onset axial Spondyloarthritis (SpA) of at least 3 months' duration as defined by the specified Assessment of Spondyloarthritis International Society (ASAS) criteria~* Active disease as defined by:~  * Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) score ≥ 4~ * Back pain ≥ 4 on a 0 to 10 Neurobehavioral Rating Scale (NRS) (from BASDAI item 2)~ * C-Reactive Protein (CRP) \> ULN (Upper Limit of Normal) and/or current evidence (ie, within the last 3 months from Screening) for Sacroiliitis on Magnetic Resonance Imaging (MRI) as defined by Assessment of Spondyloarthritis International Society (ASAS) criteria~* Intolerance to or inadequate response to at least 1 Nonsteroidal Anti-Inflammatory Drug (NSAID)~Exclusion Criteria:~* Presence of total Spinal Ankylosis (bamboo spine)~* Diagnosis of any other Inflammatory Arthritis~* Prior treatment with any experimental biological agents for treatment of Axial Spondyloarthritis (SpA)~* Exposure to more than 1 TNF-antagonist or to more than 2 previous biological agents for Axial Spondyloarthritis (SpA)~* History of or current chronic or recurrent infections~* High risk of infection~* Recent live vaccination~* Concurrent malignancy or a history of malignancy~* Class III or IV congestive heart failure - New York Heart Association (NYHA)~* Demyelinating disease of the central nervous system~* Female subjects who are breastfeeding, pregnant or plan to become pregnant during the study or within 3 months following the last dose of the investigational product~* Subjects with any other condition which, in the investigator's judgment, would make the subject unsuitable for inclusion in the study

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- CZP 200 mg Q2W (Type: EXPERIMENTAL): Subjects received Certolizumab Pegol (CZP) 400 mg subcutaneous (sc) on Weeks 0, 2 and 4, followed by 200 mg CZP sc every 2 weeks (Q2W) from Week 6 onwards.~At every visit, subjects received one injection of 200 mg CZP and one injection of Placebo to maintain the study blind.
- CZP 400 mg Q4W (Type: EXPERIMENTAL): Subjects received Certolizumab Pegol (CZP) 400 mg subcutaneous (sc) on Weeks 0, 2 and 4, followed by 400 mg CZP sc every 4 weeks (Q4W) from Week 8 onwards.~Subjects received 2 injections of Placebo every 4 weeks in between the 2 injections of 200 mg CZP to maintain the study blind.
- Placebo (Type: PLACEBO_COMPARATOR): Matching Placebo to CZP injections from Week 0 to Week 24. Placebo subjects who did not achieve certain predefined response criteria at both Weeks 14 and 16 left the Placebo group on Week 16.~After 24 weeks, all subjects were randomized to active treatment with CZP 200 mg Q2W or CZP 400 mg Q4W.
- Placebo to CZP 200 mg escape on Week 16 (Type: OTHER): Matching Placebo to CZP injections from Week 0 to Week 16. Subjects who did not achieve certain predefined response criteria at both Weeks 14 and 16 left the Placebo group on Week 16 and were treated with three loading doses of CZP 400 mg sc on Weeks 16, 18 and 20, followed by 200 mg CZP sc every 2 weeks (Q2W) from Week 22 onwards. Additionally, Placebo injections were administered as appropriate in order to maintain the study blind.
- Placebo to CZP 400 mg escape on Week 16 (Type: OTHER): Matching Placebo to CZP injections from Week 0 to Week 16. Subjects who did not achieve certain predefined response criteria at both Weeks 14 and 16 left the Placebo group on Week 16 and were treated with three loading doses of CZP 400 mg sc on Weeks 16, 18 and 20, followed by 400 mg CZP sc every 4 weeks (Q4W) from Week 24 onwards. Additionally, Placebo injections were administered as appropriate in order to maintain the study blind.
- Placebo to CZP 200 mg on Week 24 (Type: OTHER): Matching Placebo to CZP injections from Week 0 to Week 24. Three loading doses of CZP 400 mg sc were given on Weeks 24, 26 and 28, followed by 200 mg CZP sc every 2 weeks (Q2W) from Week 30 onwards. Additionally, Placebo injections were administered as appropriate in order to maintain the study blind.
- Placebo to CZP 400 mg on Week 24 (Type: OTHER): Matching Placebo to CZP injections from Week 0 to Week 24. Three loading doses of CZP 400 mg sc were given on Weeks 24, 26 and 28, followed by 400 mg CZP sc every 4 weeks (Q4W) from Week 32 onwards. Additionally, Placebo injections were administered as appropriate in order to maintain the study blind.

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

Answer: outcome: complete