Fig. 4.

Baseline progesterone levels were associated with pre- and post-stress cortisol levels. Cortisol response from baseline to 15m-post-stress during the stress and control sessions in women with high baseline P and low baseline P determined by a median split. The 3-way interaction between stress session × sample time point × P group was marginally significant (p = .055). The high P group had significantly higher cortisol levels at each time point during the stress and control sessions. Only the high P group exhibited a significant increase in cortisol during the stress session. ***: p < .001, **: p < .01, *: p < .05.