Please assess the completion status of the following clinical trial:

Trial Title: WHODAS-II for Patients With Nonspecific Low Back Pain

Study Design Characteristics:
- Allocation: None
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: DIAGNOSTIC
- Time Perspective: None
- Masking: NONE
- Phase: None
- Number of Arms: 1.0

Eligibility Criteria:
Inclusion Criteria:~* Patients seen for nonspecific low back pain, with or without referred pain~* Able to read and write~* Have signed the informed consent form~Exclusion Criteria:~* Central nervous system pathology (with or without treatment)~* Diagnosis of rheumatic inflammatory disease or fibromyalgia~* Red flags for underlying systemic disease~* Criteria for diagnosis of symptomatic herniated disc or symptomatic spinal stenosis

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 80 Years
- Healthy Volunteers: f

Study Arms:
- 1 (Type: OTHER): Measurement characteristics of WHODAS II (World Health Organization Disability Assessment Schedule)

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