Low Back Pain Rating scale: validation of a tool for assessment of low back pain

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Abstract
Low Back Pain Rating scale is an index scale which includes measurements of pain intensity, disability, and physical impairment. The scale was designed to monitor the outcome of clinical trials of low back pain treatment. It has been validated in 58 patients following first-time discectomy. The scale rating can be rapidly carried out and requires no special aids. With slight modification it can be used in office and telephone interviews, as well as postal questionnaires. These modifications only slightly reduce the quantity of information gathered. In the study, a high rater agreement (97.7%) was found without level difference between two observers using the scale. The validation process included: construct validity, criterion-related validity and item bias, relative to Global Assessments pronounced by the patient and an experienced clinician. Low Back Pain Rating scale has been shown to be valid and reliable in the assessment of low back pain.