Fig. 2.
Linear regression analysis of serum versus salivary cortisol. (A) Displays the correlation between serum and salivary cortisol at rest during visit 1; (B) displays the correlation between serum and salivary cortisol during mental stress in visit 1. (C) Displays the correlation between serum and salivary cortisol at rest during visit 2; (D) displays the correlation between serum and salivary cortisol during mental stress in visit 2.