Table 2 Circadian, actigraphy and sleep polysomnography data for patients with depression and control participants
| Â | Cases | Controls | Test statistic | Effect Size | p-value |
|---|---|---|---|---|---|
Circadian | n = 29 | n = 28 |  |  |  |
Dim Light Melatonin Onset, time | 20:36 (1:48) | 21:10 (1:48) | −1.23 | 0.32 | 0.22 |
Phase angle sleep midpoint, hh:mm | 6:46 (1:27) | 5:52 (1:36) | 2.34 | 0.62 | 0.02 |
Actigraphy | n = 34 | n = 22 |  |  |  |
Habitual sleep onset (hh:mm) | 23:13 (1:24) | 23:08 (1:05) | 0.23 | 0.07 | 0.82 |
Habitual sleep offset (hh:mm) | 7:45 (1:15) | 7:06 (0:49) | 0.42 | 0.61 | 0.02 |
Total sleep time (mins) | 452.9 (58.2) | 428.2 (58.1) | 1.32 | 0.42 | 0.19 |
Sleep Midpoint (hh:mm)‡ | 3:01 (2:42, 3:49) | 2:59 (2:31, (3:34) | 1.18 | 0.17 | 0.35 |
Polysomnography | n = 26 | n = 29 |  |  |  |
Sleep onset, time (hh:mm) | 23:14 (1:14) | 23:01 (0:49) | 0.76 | 0.20 | 0.46 |
Sleep offset, time (hh:mm) | 7:13 (1:15) | 6:47 (1:01) | 1.42 | 0.39 | 0.16 |
Total sleep time, mins | 375.5 (79.9) | 388.9 (54. 1) | −0.72 | 0.20 | 0.48 |
NREM sleep, mins | 297.2 (55.4) | 304.2 (47.5) | −0.50 | 0.14 | 0.62 |
REM sleep, mins | 78.3 (38.0) | 84.7 (25.5) | −0.73 | 0.20 | 0.47 |
Slow Wave Sleep, mins | 54.9 (46.5) | 59.0 (35.4) | −0.37 | 0.10 | 0.71 |
Sleep Efficiency, % | 75.4 (15.5) | 80.7 (10.4) | −1.48 | 0.20 | 0.15 |
Latency to Sleep Onset, mins ‡ | 17.5 (8.4, 28.3) | 8.5 (3.8, 21.8) | 2.00 | 0.26 | 0.046 |
Latency to REM sleep, mins ‡ | 126.0 (89.5, 183.8) | 65.5 (44.8, 77.3) | 3.93 | 0.53 | 0.000 |
WASO, mins ‡ | 79.8 (38.6, 150.8) | 70.0 (42.8, 109.5) | 0.91 | 0.12 | 0.36 |