Table 4.
Sleep macrostructure
| Variable | Group | Mean | STD | P |
|---|---|---|---|---|
| Total sleep time (min) | PTSD | 393.0 | 82.6 | |
| CTRL | 429.6 | 45.9 | ||
| Sleep latency (min) | PTSD | 21.1 | 24.1 | |
| CTRL | 10.0 | 5.3 | ||
| REM latency (min) | PTSD | 130.8 | 81.0 | * |
| CTRL | 79.3 | 36.3 | ||
| Sleep efficiency | PTSD | 82.9 | 11.5 | * |
| CTRL | 90.9 | 3.6 | ||
| Wake after sleep onset (min) | PTSD | 56.5 | 34.9 | * |
| CTRL | 33.3 | 16.6 | ||
| WASO/TST | PTSD | 0.2 | 0.1 | * |
| CTRL | 0.1 | 0.0 | ||
| Awakenings (#) | PTSD | 31.3 | 8.5 | * |
| CTRL | 24.1 | 7.5 | ||
| Awakenings/TST (#/min) | PTSD | 4.9 | 1.7 | ** |
| CTRL | 3.4 | 1.0 | ||
| Arousal index (#/min) | PTSD | 23.8 | 6.8 | |
| CTRL | 21.4 | 7.2 | ||
| N1 (min) | PTSD | 67.3 | 26.2 | |
| CTRL | 57.8 | 22.1 | ||
| N1 (%) | PTSD | 17.3 | 5.5 | |
| CTRL | 13.4 | 4.8 | ||
| N2 (min) | PTSD | 238.0 | 45.6 | |
| CTRL | 248.7 | 21.3 | ||
| N2 (%) | PTSD | 61.1 | 6.6 | |
| CTRL | 58.3 | 5.7 | ||
| N3 (min) | PTSD | 18.2 | 19.2 | |
| CTRL | 35.5 | 26.1 | ||
| N3 (%) | PTSD | 4.4 | 4.2 | |
| CTRL | 8.3 | 6.3 | ||
| REM (min) | PTSD | 68.6 | 36.7 | |
| CTRL | 87.6 | 29.3 | ||
| REM (%) | PTSD | 17.1 | 7.3 | |
| CTRL | 20.0 | 4.6 |
Arousal index, number of arousals/total sleep time; TST, total sleep time; WASO, wake after sleep onset.
*p < 0.05, **p < 0.01.