Table 2.
Unadjusted means (SD) for Consensus Sleep Diary, single-channel electroencephalography (EEG), actigraphy, and questionnaire total sleep time, sleep efficiency, and sleep midpoint.
| Mean (SD) | n | |
|---|---|---|
| Total sleep time, h | ||
| CSD | 7.08 (0.86) | 80 |
| EEG | 6.14 (0.75) | 69 |
| Actigraphy | 6.35 (0.84) | 75 |
| Questionnaire | 6.89 (1.20) | 79 |
| Sleep efficiency, % | ||
| CSD | 90.37 (5.59) | 80 |
| EEG | 81.22 (6.59) | 69 |
| Actigraphy | 81.59 (5.71) | 75 |
| Questionnaire | 84.69 (11.63) | 77 |
| Sleep midpoint, t (min) | ||
| CSD | 3:46 (73.20) | 80 |
| EEG | 3:37 (75.0) | 72 |
| Actigraphy | 3:43 (71.40) | 78 |
| Questionnaire | 3:11 (82.20) | 79 |
Values are unadjusted means (SD) for CSD, single-channel EEG, actigraphy, and questionnaire total sleep time, sleep efficiency, and sleep midpoint. CSD = Consensus Sleep Diary, EEG = single-channel electroencephalography, SD = standard deviation, t = clock time.