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Table 3 ROC analysis of the three measured amyloid beta peptides.

From: A novel study on amyloid β peptide 40, 42 and 40/42 ratio in Saudi autistics

Parameter Area under the curve Best Cutoff value Sensitivity % Specificity %
Aβ (1-40) 0.773 165.00 82.7% 75.0%
Aβ (1-42) 0.905 60.29 82.4% 80.6%
Aβ (40/42) 0.571 3.02 80.39% 38.89%