1. Item response theory analysis of Centers for Disease Control and Prevention Health-Related Quality of Life (CDC HRQOL) items in adults with arthritis Mielenz, Thelma J.; Callahan, Leigh F.; Edwards, Michael C. 2016 Articles ArthritisQuality of life--MeasurementQuality of life--ResearchHealth services administrationMedical careCenters for Disease Control and Prevention (U.S.)