To evaluate the concordance between the subjective and objective methods of sleep assessment in patients with fibromyalgia syndrome (FMS) and to delineate factors associated with discrepancy between the 2 sleep assessment methods.
Department of Anesthesiology, Pain Research and Management Center, University of Utah, 615 Arapeen Drive, Salt Lake City, UT 84108, USA. okifuji@hsc.utah.edu