Abstract
Previous studies indicate that posttraumatic stress disorder is one of the major mental health challenges that affect military
personnel who have experienced combat situations. However, there is still paucity of research on the factors that predict
PTSD in Nigerian military setting despite increasing rate of Boko-Haram exposure. This study therefore examined the
predictive influence of peritraumatic factors (combat exposure, number of deployments, duration of deployments and
substance use) among Nigerian military personnel exposed to Boko-Haram insurgency in North-eastern Nigeria. Data were
collected using standardized questionnaires on a sample of 715 participants. Two hypotheses were tested using Pearson
correlation and hierarchical multiple regression, and results revealed a significant positive relationship between combat
exposure (r= .36; p<.05), substance use coping (r= .14; p<.01) and PTSD. However, number (r= .07; p>.05) and duration of
deployments (r= .04; p>.05) were found to have no significant relationship with PTSD. Additional findings indicated that
combat exposure (β= .32, t= 9.10; p<.05) and using substance to cope with the experience of combat (β= -.11, t= - 3.14; p<.05)
independently and jointly [R2= .36, F(4,707)= 15.13, P<.05] predicted PTSD, while the influence of duration and multiple
deployments were statistically insignificant. Findings imply that Nigerian military personnel who experience combat and
resort to substance use to cope stand a higher risk of developing PTSD. Thus, Military authority should give adequate
attention on training to restrain its personnel from substance use coping during stressful encounters to prevent the
development of posttraumatic stress disorder.