Fig. 2

Lines fit to the rates of undiagnosed dementias estimated in the 10 risk bins. The x values for the bins were taken as the midpoints of the bin intervals. The left figure illustrates the results when the “Unclear” diagnoses were treated as dementia (i.e., “Unclear = Dementia”), whereas the right figure illustrates the results when the “Unclear” diagnoses were treated as non-dementia (i.e., “Unclear = Non-Dementia”)