Mean changes in health utility values after medical management. PT=physical therapy, AS = ankylosing spondylitis, RA= rheumatoid arthritis, TNFa = tumor necrosis factor-alpha, PsA = psoriatic arthritis, CRS= chronic rhinosinusitis, OSA = obstructive sleep apnea, CPAP=continuous positive airway pressure; PD = Parkinson’s disease, S =scleroderma, DM=diabetes mellitus.