APP and post-traumatic stress disorder: Results from LMMs adjusting for group (CBM-APP yes/no), treatment duration, and lifetime trauma exposure and including the interaction between time and the change in hair EC/NAE levels across treatment (ps ≥ .299) and follow-up (ps ≥ .081) indicated that PTSD symptoms did not change significantly differently depending on the change in hair EC/NAE levels (see supplements Table S8).