Table 1 Demographic data, time from onset of dementia to EEG and cognitive data
Young onset Alzheimer’s disease | Young onset frontotemporal dementia | Controls | |
|---|---|---|---|
N | 103 | 28 | 100 |
Median age of onset | 57 | 57 | 58 |
Range of age of onset | 45–64 | 41–64 | 30–65 |
Sex (%) - male | 40.8 | 57.1 | 48 |
Time from clinical onset to EEG: | |||
Median (month) 25% 1QR 75% 1QR | 6 6 14 | 7 7 8 | |
Cognitive tests at time of EEG: | ± SD (median) | ± SD (median) | |
MMSE ACE-R DASS: D A S TFC CBI-R FRS | 20.8 ± 6.0 (27) 59.8 ± 19.8 (64) 8.3 ± 9.7 (9) 7.6 ± 8.7 (5) 10.1 ± 8.6 (8) 9.6 ± 2.8 (10) 51.1 ± 32.2 (44) 49.9 ± 22 (54) | 24.0 ± 4.8 (26) 70.0 ± 19.1 (72) 7.0 ± 6.7 (6) 5.8 ± 6.3 (5) 11.1 ± 8.2 (10) 10.9 ± 2.1 (12) 51.2 ± 30.7 (50) 47.9 ± 27.0 (46.5) |