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. Author manuscript; available in PMC: 2014 Mar 1.
Published in final edited form as: Am J Alzheimers Dis Other Demen. 2012 Dec 26;28(2):179–184. doi: 10.1177/1533317512470484

Fig. 1. Receiver Operating Characteristic (ROC) Curve for the VPC task shows that the task powerfully discriminates between subjects who will convert and those who will not convert to aMCI/AD.

Fig. 1

The 2-min delay scores from the VPC task for all participants (N=92) divided into two groups (converters = 17, and nonconverters = 75) with group designation based on diagnosis at time of writing (up to three years from testing). The 50% and 67% on the graph indicate the cut points in the score ranges. AD indicates Alzheimer’s disease; aMCI, amnestic mild cognitive impairment; VPC, Visual Paired Comparison.