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Table 3 Demographic and cognitive characteristics of the SPECT subjects sample, disaggregated for increased levels of alpha3/alpha2

From: Conversion of mild cognitive impairment patients in Alzheimer’s disease: prognostic value of Alpha3/Alpha2 electroencephalographic rhythms power ratio

Demographic and clinical features At low-risk At high-risk p
MCI MCI
Number 14 13  
Age (years) [Range] 69.1 ± 7.6 [57÷83] 70.6 ± 5.5 [62÷78] 0.555
Gender (females) 6 (43 %) 9 (69 %) 0.168
Education (years) [Range] 8.2 ± 4.3 [4÷18] 7.9 ± 4.5 [3÷18] 0.865
MMSE score [Range] 27.9 ± 1.6 [25÷30] 27.2 ± 1.9 [24÷29] 0.309
ApoE ε4 genotype (carriers) 2 (29 %) 5 (39 %) 0.152
Left hippocampal volume (mm3) [Range] 2,606 ± 353 [1,923÷3,017] 2,073 ± 412 [1,234÷2,641] 0.001
Right hippocampal volume (mm3) [Range] 2,581 ± 473 [1,549÷3,150] 2,296 ± 501 [1,589÷3,086] 141
Wahlund total score [Range] 3.58 ± 3.29 [0.0÷10.0] 3.78 ± 2.63 [0.0÷7.0] 0.886
  1. Numbers denote mean ± standard deviation, number and [range]. p denotes significance on ANOVA
  2. SPECT single-photon emission computed tomography, MCI mild cognitive impairment, MMSE Mini-Mental State Examination, ApoE apolipoprotein E