Factors Associated with Recurrent Ulcers in Patients with Gastric Surgery after More Than 15 Years: A Cross-Sectional Single-Center Study

Figure 2

Discrimination ability of the logistic model (ROC curve). Note: the area under the curve demonstrated a good discrimination ability of the logistic model (good capacity of the logistic model to predict ulcer gastric presence correctly). The graph also showed sensitivity values versus 1 − specificity values for different cut-off classification probability values.