Table 1.
Participant characteristics.
| n | Mean | Min | Max | Mean | Min | Max | |
|---|---|---|---|---|---|---|---|
| Number (male, female) | 25 (7, 18) | ||||||
| Occupation (nurse, doctor) | 25 (20, 5) | ||||||
| Age (years) | 33.32 (9.19) | 24 | 58 | ||||
| MEQ score | 38.32 (5.70) | 28 | 52 | ||||
| BMI (kg/m2) | 23.84 (3.70) | 15.9 | 29.9 | ||||
| No. days of data prior to diurnal acrophase | 7.20 (2.89) | 2 | 14 | ||||
| No. night shifts | 3.76 (0.72) | 3 | 5 | ||||
| Diurnal Schedule | Night Schedule | ||||||
| Average mid-sleep (h) | 03:19 (0:36) | 02:35 | 04:51 | 12:38 (01:08) | 10:48 | 15:00 | |
| Average bed time (h) | 23:16 (0:13) | 22:14 | 00:26 | 9:20 (00:58) | 07:54 | 11:52 | |
| Average wake time (h) | 07:23 (0:53) | 06:15 | 09:17 | 15:57 (01:30) | 13:10 | 18:40 | |
| Average rest duration (h) | 08:07 (0:48) | 06:42 | 09:48 | 06:39 (01:07) | 03:48 | 08:24 | |
Note: MEQ = Morningness-Eveningness Composite Questionnaire, BMI = Body Mass Index, aMT6s = urinary 6-sulphatoxymelatonin, SD = standard deviation.