灾后中小学生创伤后应激障碍和抑郁症状的共存模式

为揭示灾后中小学生创伤后应激障碍(PTSD)和抑郁在症状层面的共存模式, 本研究分别在汶川地震和雅安地震1年后, 对灾区的中小学生进行问卷调查, 并基于高斯图形模型和贝叶斯爬山算法构建了二者的共存症状网络。结果发现, 在DSM-IV的框架下, PTSD和抑郁的重叠症状以及情绪麻木症状在二者的共存网络中起到了桥接作用; 子网络探测结果与DSM-IV划分的症状边界不同, PTSD中的闯入性症状和回避性症状是其区别于抑郁的特异性症状, 且多为闯入性症状激发回避性症状; 在二者的共存模式中, 多为抑郁症状激发PTSD症状。上述结果在汶川和雅安两个样本中均得到了交叉验证, 具有一定的可推广性。

Co-morbidity patterns of posttraumatic stress disorder and depressive symptoms: A network analysis of post-earthquake primary and secondary school students

Post-traumatic stress disorder (PTSD) and depression have high rates of co-morbidity among primary and secondary school students who have experienced a major natural disaster. Some researchers have suggested that overlapping symptoms and dysphoria symptoms of PTSD contribute to co-morbidity, while others have attempted to explain the co-morbidity through a causal relationship between them. However, most of these studies have been based on the hypothesis of common causes, explaining co-morbidity at level of disorders or dimensions, while few studies have investigated patterns of the co-morbidity from the perspective of symptoms.