Fig. 2: Pathway diagram for mediation models evaluating the relationships between war exposure, hair cortisol concentration (HCC) and post-traumatic stress disorder (PTSD) symptoms.

A The model testing HCC as a mediator of the relationship between war exposure and PTSD symptoms. B The model testing PTSD symptoms as a mediator of the relationship between war exposure and HCC. Coefficients are standardised regression betas. C: non-mediated direct path, C’: mediated direct path. All paths: p < 0.01.