Fig. 3

Pain scores during 120-s continuous suprathreshold heat pain stimulation in young adults with juvenile idiopathic arthritis (JIA) and age- and sex-matched controls. Pain scores were measured with numeric rating scale (NRS), range 0–10 (0 = no pain, 10 = unbearable pain). The estimated margins of the multilevel model are graphically illustrated with time on the x-axis and NRS scores on the y-axis. In both groups, the NRS scores increased during the 120-s stimulation, but it was a trend towards steeper increase in the JIA group