Do pain qualities and spatial characteristics make independent contributions to interference with physical and emotional functioning?
Although pain is acknowledged to be a multidimensional experience that can vary in intensity, quality (eg, burning, sensitive), and spatial characteristics (eg, location on body, perceived depth), its qualitative and spatial domains continue to be rarely assessed in pain clinical trials. One factor that may be contributing to the relatively rare assessment of pain quality and spatial characteristics is the lack of research addressing whether knowledge about these aspects of pain contributes important information beyond that provided by pain intensity alone. For example, there is no research that has examined whether measures of pain quality and perceived depth add anything to the understanding of the impact of pain on function. In the current study, secondary analyses of pretreatment data from clinical trials of patients from 3 diagnostic groups (osteoarthritis, low back pain, and peripheral neuropathy) indicated that measures of pain quality and perceived depth were significantly asso
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