Effectiveness of a Multidisciplinary Treatment for Patients With Chronic Low Back Pain

Inclusion Criteria: * Patients over 18 years of age. * Patients with primary chronic low back pain (non-specific chronic low back pain) of axial predominance. * Experiencing pain at least 50% of the time over the last 6 months. * Average weekly pain intensity equal or greater than 4 out of 10 on a verbal numerical scale. * Be agreeable to receiving active, non-pharmacological and non-surgical treatment. Exclusion Criteria: * Inflammatory low back pain. * History of cancer in the last 5 years. * Unexplained and unintentional weight loss of 10 Kg or more over the preceding 12-month period. * Lack of control of bowel and bladder function (cauda equina). * Difficulty in performing the sessions due to severe physical disability. * Diagnosis of severe mental illness (schizophrenia, major depression, bipolar disorder, etc.). * Strong prescription opioid or parenteral medication addiction disorders. * Technical-logistical problems (inability to attend treatment sessions or inability to fill out assessment questionnaires). * Problems in understanding the content of the sessions (language barrier, severe hearing loss or severe cognitive impairment). * Have sought compensation or entered into litigation in the preceding 12-month period.