Fig. 1
Estimated marginal means of PTSS by resting HR in boys and girls from our unadjusted moderation model, indicating sex of child significantly moderates the relationship between resting HR and PTSS, (interaction term: B = -0.80374, p = 0.023). In boys, resting HR was not found to be associated with PTSS, (r(36) = 0.05, p = 0.77), while girls’ lower resting HR was associated with higher PTSS, (r(35) = -0.47, p < 0.01) ModelY(PTSS) = β 0 + β 1 (resting HR) + β 2 (sex) + β3 (PDS) + β 4 (Violence exposure) + β 5 (site) + β 6 (sex * resting HR)