Figure 3.

Predictive power of haptoglobin [HP] gene for disease activity in UC patients. The receiver operating characteristic curve [ROC] is shown for different models. Red line shows the ROC curve from Model 1, where the binary response is defined as inactive [endoscopic Mayo score 0] versus active [endoscopic Mayo score 1–3]. The darkblue dashed line shows the 10-fold cross-validation from Model 1. Green line shows the ROC curve from Model 2, where the binary response is defined as inactive [endoscopic Mayo score 0–1] versus active [endoscopic Mayo score 2–3]. The skyblue dashed line shows the 10-fold cross-validation from Model 2. The cut-off points associated with the best specificity and sensitivity are shown [dots] for each Model. The AUC of each ROC curve are shown. UC, ulcerative colitis; AUC, area under the curve.