Figure 6From: Selection of indicators for tonsillectomy in adults with recurrent tonsillitisThe ROC curve of IT scores for prediction of sclerotic type tonsils. An optimal cut-off score of IT was 36 (AUC = 0.716), with sensitivity of 52.5%, specificity of 86.1%, positive predictive value of 87.5% and negative predictive value of 50.0%.Back to article page