International estimates place the prevalence of chronic pain at about 18% to 30% of adults in the community, most of whom report at least some pain-related interference with activities.7,23,48 Further, recent U.S data indicate that of the five most common disorders contributing to years lived with disability, positions 1, 3 and 4 are occupied by back pain, other musculoskeletal disorders, and neck pain, respectively.60 With such a high burden of functional disability, it is important for both clinical and research purposes that there be reliable and valid measures for the assessment of activity limitations caused by chronic pain.
from The Journal of Pain https://ift.tt/2oqKdNo
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