MAPT and dementia: A positive Tau-PET visual read was observed in 8.7% (60/688) of cognitively unimpaired individuals (23.4% [50/214] in amyloid-positive cognitively unimpaired individuals), 37.3% (154/413) of individuals with MCI (66.7% [148/222] in amyloid-positive MCI), and 73.4% (399/544) of individuals with dementia (85.8% [369/430] in amyloid-positive dementia).