 The Clinical Dementia Rating CDR is a complex scale performed to quantify the severity of the symptoms of dementia. It includes queries about the cognitive and functional domains. The final score ranges between 0 and 3, with higher scores indicating more severe dementia symptoms. A score of 0.5 is suggestive of the presence of mild symptoms. It is therefore possible that patients with corrected MMSE 24 have a CDR score of 0.5. Of note, patients included in the study will not undergo the CDR test, as the different items that compose the CDR can be derived from the performed geriatric and neuropsychological test batteries see below. 