| ESS ranges | N (m:f) | Mean ESS | SD | Median OSLER | SE | IQR | No. sleepiness descriptors | ||
| M | p | S | |||||||
| ≤10 | 9 (7:2) | 8.9 | 1.0 | 22.5 | 4.7 | 23.2 | 7 | 23 | 9 |
| 11–15 | 7 (5:2) | 13.6 | 1.0 | 16.3 | 6.1 | 9.7 | 16 | 13 | 23 |
| 16–24 | 8 (8:0) | 18.5 | 2.1 | 17.6 | 6.2 | 15.1 | 10 | 12 | 22 |
M, mental function; P, physical sensation; S, related to sleep or actual sleep.