Please assess the completion status of the following clinical trial:

Trial Title: Paraspinal Block in Nonspecific 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: 3.0

Eligibility Criteria:
Inclusion criteria:~* Age between 20 to 60 years;~* Clinical symptoms of vertebral pain that is unresponsive to symptomatic treatment with anti-inflammatory drugs for 3 months;~* Moderate to severe pain: visual analog scale (VAS) \> 4;~* Diagnosis of chronic nonspecific low back pain;~* MiniMental test (MEEM) between 24 and 30;~* Availability to comply with the visits;~* Agree with signing the Informed Consent Form~Exclusion criteria:~* Severe psychiatric disease that requires psychiatric care;~* Neurological disorders (lumbosciatic pain);~* Concurrent fibromyalgia, per the 1990 diagnostic criteria of the American Academy of Rheumatology~* Concurrent rheumatic disease~* History of allergy to lidocaine (used for paraspinal blocks)~* Labor problems~* History of surgery on the lumbar spine~* No availability to visit the clinic for treatment and evaluations.

- Gender: ALL
- Minimum Age: 20 Years
- Maximum Age: 60 Years
- Healthy Volunteers: f

Study Arms:
- Lidocaine (Type: EXPERIMENTAL): Paraspinal infusion of 3ml lidocaine at 1%, once a week for three weeks, combined with standard treatment.
- Sham lidocaine (Type: SHAM_COMPARATOR): Sham Injection, without lidocaine, combined with standard treatment.
- Standard treatment only (Type: ACTIVE_COMPARATOR): The only intervention is the standard treatment. No lidocaine or shame injection was used.

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