| ESS | VaD group (n = 20) | Control (n = 20) | P value |
| 0 - 5 | 0 (0.0%) | 18 (90.0%) | 0.001* |
| 6 - 10 | 7 (35.0%) | 2 (10.0%) | |
| 11 - 12 | 5 (25.0%) | 0 (0.0%) | |
| 13 - 15 | 4 (20.0%) | 0 (0.0%) | |
| 16 - 24 | 4 (20.0%) | 0 (0.0%) | |
| PSQI | VaD group (n = 20) | Control (n = 20) | P value |
| <5 | 0 (0.0%) | 20 (100.0%) | 0.001* |
| >5 | 20 (100.0%) | 0 (0.0%) |