Research has shown that trauma exposure is associated with increased symptoms of posttraumatic stress disorder (PTSD). However, knowledge is sparse on whether there are differential predictions of specific clusters of PTSD symptoms by trauma exposure. We investigated the rate of trauma exposure and prevalence of PTSD as well as the contributions of trauma exposure to severity of four PTSD symptoms clusters among persons who were displaced due to terrorist attacks. Participants were Nigerian internally displaced persons (IDPs, N = 1059, 54.8% males; mean age = 34.30 years, SD = 13.69) who completed Hausa language versions of the Harvard Trauma Questionnaire – Part 1 for measuring trauma exposure and the Posttraumatic Stress Disorder Checklist for DSM-5 for assessing PTSD symptoms. The most frequently reported traumatic stressors were lack of basic needs, losses, maltreatment/torture, and violent deaths. Prevalence of PTSD was high (65.72%). Trauma exposure uniquely and strongly predicted increased PTSD symptoms severity across all the PTSD symptoms clusters by adding more variances above and beyond the demographic factors. Regular provision of relief materials is necessary in IDPs’ camps. Psychological interventions and mental healthcare services should be prioritized in comprehensive management of the displacement crisis resulting from terrorist attacks.

研究表明，创伤暴露与创伤后应激障碍（PTSD）症状增加有关。但是，关于创伤暴露对PTSD症状的特定簇是否存在差异预测的知识很少。我们调查了因恐怖袭击而流离失所的人中创伤暴露的比例和创伤后应激障碍的患病率，以及创伤暴露对四种创伤后应激障碍症状严重程度的影响。参加者为尼日利亚国内流离失所者（IDP，N  = 1059，男性54.8％；平均年龄= 34.30岁，SD = 13.69），他们完成了哈佛创伤问卷的豪萨语版本–第1部分（用于测量创伤暴露）和DSM-5的创伤后应激障碍检查表，用于评估PTSD症状。最常报告的创伤性应激源是缺乏基本需求，损失，虐待/酷刑和暴力死亡。PTSD的患病率很高（65.72％）。通过在人口统计因素之上和之外增加更多的差异，创伤暴露是唯一且强烈预测的，在所有PTSD症状群中，PTSD症状的严重程度都会增加。在国内流离失所者营地中，必须定期提供救济材料。在对恐怖袭击造成的流离失所危机进行综合管理时，应优先考虑心理干预和精神保健服务。