Table 2.

Cortisol levels following the dexamethasone suppression test by diagnostic group.

Time point	Depressed	Non-depressed	Difference*
Pre-DST wakening levels	0.95 ± 0.03	1.03 ± 0.02	−0.08 (p = 0.04)
Pre-DST morning peak levels	1.12 ± 0.03	1.23 ± 0.02	−0.11 (p = 0.01)
Pre-DST evening levels	0.41 ± 0.04	0.32 ± 0.03	0.08 (p = 0.08)
Post-DST wakening levels	0.27 ± 0.04	0.20 ± 0.02	0.07 (p = 0.10)
Post-DST morning peak levels	0.32 ± 0.05	0.24 ± 0.04	0.08 (p = 0.23)
Change in wakening levels from pre- to post-DST	0.71 ± 0.06	0.86 ± 0.04	0.14 (p = 0.05)
Change in morning peak levels from pre- to post-DST	0.83 ± 0.05	0.98 ± 0.08	0.15 (p = 0.08)

Note: Levels of log-transformed cortisol expressed as M ± SE. DST, dexamethasone suppression test.

^*Values shown represent average difference between groups and (p-value).