Table 1.

Clinical and demographic data for patients with Alzheimer disease and healthy volunteers

	Patients	Healthy volunteers
Sex, F:M	51:59	85:25
Age, years	71.2 (9, 48–89)	66.8 (7.5, 55–94)
Age at onset, years	67.9 (8.6, 46–85)	N/A
Time from disease onset, years	3.6 (1.9, 1–10)	N/A
Education level, n
Higher education/university	25	64
Secondary education of general type	45	40
Secondary education of technical training type	18	4
Primary school education	22	0

N/A not applicable

Continuous variables are shown as mean (SD, range). There are no statistically significant differences between groups (p > 0.05) apart from sex distribution