Table 1.
Summary of data for the cohort of patients, stratified by SUDEP Risk Inventory score (SUDEP-7).
| Quartile by SUDEP-7 score | SUDEP-7 score | Age | Sex | Duration of epilepsy (years) | Seizures per month | RMSSD (ms) | Mean RMSSD by quartile |
|---|---|---|---|---|---|---|---|
| 76–100% | 7 | 45 | M | 45 | 6 | 14.9 | 17.6 ms SD 5.1 |
| 6 | 21 | M | 16 | 60 | 22.3 | ||
| 6 | 18 | F | 17 | 24 | N/A | ||
| 5 | 46 | F | 31 | 3 | 21.4 | ||
| 5 | 28 | F | 28 | 20 | 11.8 | ||
| 51–75% | 4 | 56 | F | 44 | 5 | 15.1 | 25.6 ms SD 5.8 |
| 4 | 44 | M | 33 | 6 | 32.0 | ||
| 4 | 32 | M | 31 | 3 | 23.8 | ||
| 4 | 40 | F | 34 | 3 | 20.9 | ||
| 4 | 42 | F | 30 | 30 | 26.4 | ||
| 4 | 32 | M | 14 | 3 | 30.4 | ||
| 4 | 30 | M | 22 | 5 | 33.6 | ||
| 4 | 34 | F | 29 | 5 | 23.5 | ||
| 4 | 30 | M | 26 | 15 | 24.5 | ||
| 25–50% | 3 | 28 | F | 20 | 8 | 60.3 | 35.8 ms SD 17.2 |
| 3 | 19 | M | 5 | 60 | 26.5 | ||
| 3 | 37 | M | 15 | 300 | 21.3 | ||
| 2 | 32 | F | 10 | 10 | 23.3 | ||
| 2 | 22 | F | 12 | 4 | 47.5 | ||
| 0–25% | 1 | 28 | F | 7 | 7 | 20.9 | 32.0 ms SD 12.5 |
| 1 | 24 | M | 10 | 12 | 31.3 | ||
| 1 | 37 | F | 7 | 5 | 31.5 | ||
| 1 | 26 | F | 21 | 10 | 31.0 | ||
| 1 | 22 | F | 17 | 10 | 55.4 | ||
| 1 | 53 | F | 13 | 13 | 21.7 | ||
| Mean | 2.96 | 33.04 | 21.48 | 25.08 | 27.9 | 27.9 | |
| SD | 1.59 | 10.3 | 11.20 | 59.35 | 11.8 | 11.8 |
The mean RMSSD decreased with each increasing quartile of SUDEP-7, p = 0.032, trend test.