Table 1.
Salivary cortisol profiles and sleep data.
| Morning (n = 33) | Afternoon (n = 34) | Test (t or χ2) | p | |||
|---|---|---|---|---|---|---|
| Mean | SD | Mean | SD | |||
| Salivary cortisol (nmol/l) | ||||||
| 8:00 | 15.16 | 10.90 | 15.89 | 8.88 | ||
| 11:00 | 5.79 | 4.07 | 6.51 | 4.22 | ||
| 15:00 | 6.25 | 4.02 | 5.67 | 2.90 | ||
| 20:00 | 4.35 | 3.60 | 2.74 | 1.53 | ||
| Diurnal slope | −0.09 | 0.07 | −0.13 | 0.05 | t(65) = 2.79 | 0.01 |
| AUC* | 82.00 | 42.82 | 79.59 | 26.96 | t(64) = −0.51 | 0.61 |
| Wake-up time | 6:50 | 0:45 | 7:10 | 0:30 | t(65) = −2.11 | 0.04 |
| Sleep duration | 6:09 | 0:46 | 6:43 | 0:48 | t(65) = −2.90 | 0.01 |
*AUC: Area under the curve. For Salivary cortisol, AUC, and Wake-up time, the statistical tests were conducted for log transformed data.