Fig. 4From: Increased levels of S100A8/A9, IL-1ß and IL-18 as a novel biomarker for recurrent tonsillitisReceiver Operating Characteristic curve analysis of the RAT score. A cut-off value of 1.5 could be determined for the RAT score in order to identify patients with recurrent tonsillitis with a sensitivity of 0.95 and a specificity of 0.88. Area under the curve A = 0.959Back to article page