Mental Health Center of West China Hospital, and Disaster Medicine Center, Sichuan University, Chengdu, 610041 Sichuan, PR China.
Mental Health Center of West China Hospital, Sichuan University, Chengdu, 610041 Sichuan, PR China.
J Affect Disord. 2019 Dec 1;259:288-295. doi: 10.1016/j.jad.2019.08.065. Epub 2019 Aug 20.
Despite considerable studies focused on the symptoms of posttraumatic stress disorder (PTSD), little is understood about how symptoms of PTSD change over time. The study aimed to use a network analysis approach to understand the nature of the association between PTSD symptoms at different time points among children and adolescents who experience an earthquake.
A longitudinal study enrolled 1623 youth survivors who completed 3 assessments with the Children's Revised Impact of Event Scale at 2 weeks, 3 months and 6 months after the Lushan earthquake. The epicentre was Baoxing Country that located in the Ya'an city (Sichuan Province in China). A network analysis approach was used to investigate how symptom networks change at different time points.
A total of 1623 youth survivors (768 male and 855 female) completed three assessments. Different centrality symptoms existed at different time points. Flashback and upset by reminders were centrality symptoms at 2 weeks, 3 months and 6 months. The overall network connectivity was significantly stronger at 3 months than at 2 weeks (5.663 vs. 5.140, s = 0.523, p = 0.000), and significantly stronger at 6 months than at 2 weeks (6.094 vs. 5.663, s = 0.432, p = 0.020).
Participants from a specific region might limit the generalizability of our results. A self-report questionnaire was used to assess PTSD symptoms.
Re-experience cluster (flashback and upset by reminders) and their interactions might play a key role in PTSD symptom evolution. Over time, the global connectivity becomes stronger, suggesting that youth survivors are more vulnerable in the chronic phases.
尽管有大量研究集中在创伤后应激障碍（PTSD）的症状上，但对于 PTSD 症状如何随时间变化知之甚少。本研究旨在使用网络分析方法来了解地震后经历地震的儿童和青少年在不同时间点 PTSD 症状之间的关联性质。
一项纵向研究招募了 1623 名青少年幸存者，他们在芦山地震后 2 周、3 个月和 6 个月分别完成了 3 次儿童修订版事件影响量表评估。震中位于四川省雅安市宝兴县。使用网络分析方法来研究不同时间点症状网络如何变化。
共有 1623 名青少年幸存者（768 名男性和 855 名女性）完成了三次评估。不同的中心症状存在于不同的时间点。闪回和提醒时心烦是 2 周、3 个月和 6 个月的中心症状。与 2 周相比，3 个月时整体网络连通性明显更强（5.663 比 5.140，s=0.523，p=0.000），与 2 周相比，6 个月时明显更强（6.094 比 5.663，s=0.432，p=0.020）。
来自特定地区的参与者可能会限制我们研究结果的普遍性。使用自我报告问卷评估 PTSD 症状。
再体验簇（闪回和提醒时心烦）及其相互作用可能在 PTSD 症状演变中发挥关键作用。随着时间的推移，全球连通性变得更强，这表明在慢性阶段，青少年幸存者更容易受到影响。
