| Variable | Patient group N = 60 | Control group N = 60 | P value |
| EEG |
|
| 0.002 |
| Normal | 31 (51.6%) | 53 (88.3%) |
|
| Theta slowing | 11 (18.3%) | 7 (11.7%) |
|
| Delta slowing | 12 (20%) | 0 (0%) |
|
| Triphasic wave | 7 (11.6%) | 0 (0%) |
|
| VEP P100 latency right eye Mean ± SD Median (range) |
123.22 ± 31.3 106 (80 - 198) |
99.37 ± 3.9 100 (90 - 111) |
<0.0001
|
| VEP P100 latency left eye Mean ± SD Median (range) |
120.8 ± 26.7 105 (88 - 171) |
98.5 ± 3.40 99 (90 - 105) |
<0.0001
|
| MMSE | 21.3 ± 3.7 | 25.8 ± 2.9 | 0.001 |