IL7R and post-traumatic stress disorder: These results suggest that PTSD has a moderate effect (ES between 0.3 and 0.5) on total T and helper T cells and a small effect (ES between 0.1 and 0.2) on CD127loHLA-DR+ and CD127-HLA-DR- Tregs, but given that the associated CIs do not include zero, the effects may have important practical consequences.