Figure 2.
Classification and diagnostic accuracy mode for distinguishing different stages of periodontal disease. ROC (receiver-operating characteristic analysis) and AUC (the area under ROC curve) as described ealrier3. (A) health versus gingivitis (AUC ≥ 0.80); (B,C) health versus periodontitis (AUC ≥ 0.95); and (D,E) gingivitis versus periodontitis (AUC ≥ 0.85). (B,C and D,E were split in two graphs due to graphical software limitations).