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Table 3 Clinical and neuropsychological features of the MCI sample grouped according to the evidence (i.e., Aβ+ MCI) or the absence (i.e., Aβ- MCI) of amyloid pathology by amyloid-PET and/or CSF imaging. Amyloid pathology information was available in 26/30 MCI subjects. Values are shown as mean ± standard deviation

From: A biomarker study in long-lasting amnestic mild cognitive impairment

  Aβ+ MCI n=15 Aβ- MCI n=11 Statistics
Female/Male ratio 8/7 11/1 p<0.05
Age in years 73.5±5.4 75.3±4.5 p=0.4
Years of education 9.2±4.8 11.1±4.9 p=0.3
Disease duration in months 30.3±16 50.3±29 p<0.05
Diagnosis at the first evaluation
 Mini Mental State Examination (cut-off = 24) 25±3.9 26.5±2.9 p= 0.31
 Token test (cut-off = 26.25) 30.8±4.3 30.7±2 p=0.9
 Phonemic fluency (cut-off = 16) 24.1±12.2 20±7.4 p=0.34
 Semantic fluency (cut-off = 24) 28.8±10.5 27.1±5.7 p=0.64
 Digit Span (cut-off = 3.5) 5.23±1.3 5.5±1.1 p=0.66
 Corsi Span (cut-off = 3.5) 4.7±0.8 4.3±0.7 p=0.25
 Rey Auditory Verbal Learning Test immediate recall (cut-off = 28.5) 19.17±3.7 20.3±5.1 p=0.55
 Rey Auditory Verbal Learning Test delayed recall (cut-off = 4.68) 1.42±1.9 1.22±1.5 p=0.80
 Rey-Osterrieth Complex Figure recall (cut-off = 9.46) 6.25±3.1 6.25±5.2 p=1
 Rey-Osterrieth Complex Figure copy (cut-off = 28.87) 22.6±9 28.64±6.1 p=0.075
 Attentive Matrices (cut-off = 30) 43.85±7 45.18±10.7 p=0.72
 Raven Matrices (cut-off = 17.5) 24.9±7.1 22.73±6.1 p=0.52