Fig. 1: Brain Age Difference (BAD) is greater in WTC-PTSD responders.

Density plots showing the distribution of chronological age (Panel A), predicted brain age (Panel B) and Brain Age Difference (BAD; Panel C) stratified by WTC-PTSD (orange line) and non-PTSD (blue line). Only BAD differed significantly between WTC-PTSD and non-PTSD groups. Significance level: * p < 0.05, ** p < 0.01, *** p < 0.001.