"Risk score for prediction of 10 year dementia risk in individuals with type 2 diabetes: a cohort study" 
Lancet Aug 20  
http://www.thelancet.com/journals/landia/article/PIIS2213-8587(13)70048-2/fulltext 
"Interpretation

To the best of our knowledge, this is the first risk score for the prediction of 10 year dementia risk in patients with type 2 diabetes mellitus. The risk score can be used to increase vigilance for cognitive deterioration and for selection of high-risk patients for participation in clinical trials."