Fig. 2.

Log- transformed diurnal salivary cortisol rhythms of the total sample (A), the female sample (B) and the male sample (C) by maternal shift work exposure before pregnancy comparing offspring whose mothers worked night shift work before pregnancy (red curve) to offspring whose mothers never worked night shifts before pregnancy (blue curve). The curves are based on predictive values obtained from a linear mixed effect models with piecewise linear terms of the time variable.