Fig. 2
From: Utility of CSF biomarkers in psychiatric disorders: a national multicentre prospective study
Comparison of the three categories of patients in the study: (1) psychiatric symptoms associated with Alzheimer’s disease (AD), (2) cognitive impairment not linked to neurodegenerative disease (No Neurodeg) and (3) dual diagnosis (patient with a primary psychiatric disease who subsequently developed AD) (dual). a Differences in age of onset of psychiatric symptoms between the three categories. b Differences in delay between the first psychiatric symptoms and cognitive decline in the three categories ***: p<0.001