Table 6.
SOL and ORP variables in naps with and without sleep perception
| Variable | With sleep perception | No sleep perception | t-Stat | P |
|---|---|---|---|---|
| n | 12 | 12 | ||
| D<2.0 | 15.4 (2.7) | 13.1 (3.3) | 3.0 | 0.006 |
| D<1.5 | 10.3 (3.6) | 8.0 (4.6) | 4.1 | 0.001 |
| D<1.0 | 6.2 (4.2) | 3.8 (3.6) | 4.0 | 0.001 |
| ORPMIN | 0.59 (0.35) | 0.77 (0.46) | 2.7 | 0.010 |
| Integral ΔORP | 37 (7.0) | 30 (2.0) | 6.1 | 4.E–05 |
| SOL | 6.4 (4.0) | 5.7 (2.7) | 0.7 | 0.26 |
Notes: n denotes the number of patients. ORPMIN indicates lowest ORP reached. D<2.0, D<1.5, and D<1.0 are the times below indicated ORP values during the nap. Values are means (SD).
Abbreviations: SOL, sleep onset latency; ORP, odds ratio product; SD, standard deviation.