Figure 3From: An algorithm to predict phenotypic severity in mucopolysaccharidosis type I in the first month of lifeROC curve analysis. (A) ROC curve of IDUA activity for discrimination between MPS I-H and non MPS I-H. (B) Sensitivity and specificity for IDUA activity cut-off levels to discriminate between MPS I-H and non MPS I-H. Dashed lines represent chosen cut-off levels of 0.32 and 0.66 nmol × mg-1 × hr-1 IDUA activity.Back to article page