Mild cognitive impairment as a risk factor for Parkinson's disease dementia.
Jeroen HooglandJudith A BoelRob M A de BieRonald B GeskusBen A SchmandJohn C Dalrymple-AlfordConnie MarrasCharles H AdlerJennifer G GoldmanAlexander I TrösterDavid J BurnIrene LitvanGert J Geurtsennull nullPublished in: Movement disorders : official journal of the Movement Disorder Society (2017)
This is the first large international study evaluating the predictive validity of level II mild cognitive impairment criteria for PD. The results showed a clear and unique contribution of classification according to level II criteria to the hazard of PD dementia. This finding supports their predictive validity and shows that they contribute important new information on the hazard of dementia, beyond known demographic and PD-specific factors of influence. © 2017 International Parkinson and Movement Disorder Society.