Table 1.

Mean values (± standard error of the mean, SE) of the demographic and clinical data as well as the results of their statistical comparisons (p < 0.05 corrected) in the groups of healthy elderly subjects (Nold, N = 30), patients with mild cognitive impairment and epileptiform electroencephalographic activity not due to Alzheimer's disease (noADMCI-EEA, N = 13), and noADMCI without EEA (N = 19).

	Nold	noADMCI-noEEA	noADMCI-EEA	Statistical analysis
N	30	19	13
Age	68.8 ± 1.2 SE	69.1 ± 1.8 SE	69.3 ± 1.8 SE	ANOVA: p = 0.9
Gender (M/F, %M)	6/24 (20%)	6/13 (31.6%)	0/13 (0%)	Freeman Halton test: p = 0.07
Education	9.8 ± 0.8 SE	9.8 ± 1.0 SE	9.0 ± 1.2 SE	ANOVA: p = 0.8
MMSE	28.7 ± 0.2 SE	26.2 ± 0.5 SE	26.3 ± 0.8 SE	Kruskal-Wallis ANOVA: H = 19.1, p < 0.00001# (Nold > noADMCI-EEA, noADMCI-noEEA)

All ADMCI patients had all values available.

MMSE, Mini Mental State Evaluation; M/F, males/females.

^#p < 0.05 corrected.

No significant difference for demographic data (i.e., age, gender, and education) was observed between the three groups even when a marginal threshold of p < 0.05 uncorrected was used.