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Table 1 Demographic and clinical variables, mean (standard deviation)

From: Quantitative EEG as a biomarker in mild cognitive impairment with Lewy bodies

  HC (N = 31) MCI-AD (N = 36) MCI-LB (N = 39) Group differences
Male to female 22:9 15:21 35:4 χ2 = 20.0, p < 0.001a
p(HC,MCI-AD) = 0.02
p(HC,MCI-LB) = 0.045
p(MCI-AD,MCI-LB) < 0.001
Age 73.7 (7.3) 76.1 (7.7) 74.7 (6.4) F(2, 103) = 1.0, p = 0.38b
AChEI 7 (19%)e 18 (46%)f χ2 = 5.7, p = 0.02c
PD meds 0e 4 (10%)f χ2 = 3.8, p = 0.052c
Years of education 14.7 (4.0)g 12.9 (3.4)h 12.1 (2.8) F(2, 100) = 5.1, p = 0.008c
p(HC,MCI-AD) = 0.12
p(HC,MCI-LB) = 0.006
p(MCI-AD,MCI-LB) = 0.87
ACE-R 92.7 (4.2) 82.4 (8.5) 83.8 (9.2) t73 = 0.7, p = 0.50d
MMSE 28.5 (1.1) 26.9 (2.1) 26.6 (2.5) t73 = 0.7, p = 0.51d
UPDRS III 5.5 (4.4) 15.1 (13.8) 23.3 (14.2) t73 = 2.5, p = 0.01d
DCFS 6.9 (1.9)i 8.5 (3.3)k t61 = 2.4, p = 0.02d
CAF total 1.4 (2.7)i 3.7 (4.2)k t61 = 2.5, p = 0.02d
NPI total 8.6 (9.3)i 16.4 (12.9)k t61 = 2.7, p = 0.01d
NEVHI 0.8 (1.5)e 2.7 (4.1) t71 = 2.6, p = 0.01d
GDS 1.3 (1.8) 3.5 (2.5) 5.1 (4.1) F(2, 103) = 13.4, p < 0.001b
p(HC,MCI-AD) = 0.01
p(HC,MCI-LB) < 0.001
p(MCI-AD,MCI-LB) = 0.08
  1. ACE-R Addenbrooke’s Cognitive Examination–Revised, AChEI number of patients taking acetylcholinesterase inhibitors, CAF total clinician assessment of fluctuation total score, DCFS Dementia Cognitive Fluctuation Scale, GDS Geriatric Depression Scale, HC healthy controls, MCI-AD mild cognitive impairment with Alzheimer’s disease, MCI-LB probable mild cognitive impairment with Lewy bodies, MMSE Mini-Mental State Examination, NEVHI North-East Visual Hallucinations Interview, NPI Neuropsychiatric Inventory, PD meds number of patients taking dopaminergic medication for the management of Parkinson’s disease symptoms, UPDRS III Unified Parkinson’s Disease Rating Scale III (motor subsection)
  2. aChi-square test HC, MCI-AD, MCI-LB
  3. bUnivariate ANOVA HC, MCI-AD, MCI-LB
  4. cChi-square test MCI-AD, MCI-LB
  5. dStudent’s t test MCI-AD, MCI-LB
  6. eN = 34
  7. fN = 38
  8. gN = 29
  9. hN = 35
  10. iN = 27
  11. kN = 36