Table 3.

Follow-up characteristics

	MCI	AD dementia	Total
Reason for follow-up (n)
Clinical follow-up	46	18	64
Clinical trial – screening phase	5	24	29
Clinical trial – control condition	37	18	55
Number of EEG recordings (median, range)	2 (2–4)	2 (2–3)	2 (2–4)
Total follow-up time, months (median, range)	11.0 (2.6 – 34.8)	5.9 (2.8 – 35.5)	7.2 (2.6 – 35.5)