Please assess the completion status of the following clinical trial:

Trial Title: tDCS for Chronic Low Back Pain

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

Eligibility Criteria:
Inclusion Criteria:~* Chronic Low Back Pain ≥ 6 months duration in the lumbar region, present more than half the days of the month, and on average be at a moderate level of severity in the last month~* At least one trial of physician recommended medication (e.g. acetaminophen, NSAIDS, skeletal muscle relaxants)~* Pre-existing opioid and non-opioid pain medication must be non-existent or stable (medications have not changed for one month)~* Be able to understand, read and write English~* If female and of childbearing age, agree to use acceptable birth control during the study treatment period (oral contraceptives, history of tubal ligation, history of a hysterectomy, or a reliable barrier method)~Exclusion Criteria:~* Lifetime Diagnostic and Statistical Manual (DSM) IV diagnosis of bipolar disorder, schizophrenia, or other chronic psychotic condition~* Current DSM-IV diagnosis of substance dependence for alcohol, sedative/hypnotic drugs, stimulants, cocaine~* Current cancer, infection, or inflammatory arthritis~* Broken skin or other lesions in the area of the electrodes~* Uncontrolled medical problems, such as diabetes mellitus, hypertension, pulmonary or airway disease, heart failure, coronary artery disease, or any other condition that poses a risk for the subject during participation~* Presence of metal in the cranial cavity~* Holes in the skull made by trauma or surgery~* Pacemakers, medication pumps, and other implanted electronic hardware~* Pregnancy

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

Study Arms:
- sham tDCS (Type: SHAM_COMPARATOR): 10 sessions sham transcranial direct current stimulation (tDCS)
- active tDCS (Type: EXPERIMENTAL): 10 sessions active transcranial direct current stimulation (tDCS)

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