Figure 1.

Receiver operating characteristic (ROC) curves for multimarker panel (including hydroperoxides, uric acid, residual antioxidant power, thiols, and arylesterase) for the diagnosis of late onset Alzheimer's disease. (a) Multivariate logistic model: specificity/sensitivity = 64%/79%; (b) score model: specificity/sensitivity = 61%/83%; (c) number of risk factor model; specificity/sensitivity = 61%/83%. Chart C: value “1” means that the subject present only one risk factor (e.g., thiols lower than its cut-off); “2”, subjects with two risk factors (e.g., thiols and arylesterase lower than their respective cut-offs); “3”, three risk factors and so on. See Materials and Methods section or the description of the models used for ROC calculation.