After quality control of the GWAS data and removal of the related subjects, 1633 EAs and 2847 AAs were retained. We further removed 55 EAs and 81 AAs with unknown lifetime PTSD diagnosis. Final GWAS analyses included 1578 EAs (300 PTSD cases) and 2766 AAs (444 PTSD cases). Demographic information of the subjects is listed in Table 1.
