ABSTRACT Posttraumatic Stress Disorder (PTSD) is one of the most common psychological traumas after earthquake. Social support is suggested as a protective factor, but the impact of social support on the prevention and reduction of PTSD among earthquake survivors is still unknown. This systematic review aims to explore the effectiveness of social support in prevention and reduction of PTSD in earthquake survivors. An electronic search was conducted in Medline, PubMed, EMBASE, Cochrane library, PsycINFO, and CINAHL, including systematic reviews, randomized controlled trials (RCTs), cohort studies, case control studies, cross-sectional surveys, and case studies. The initial search identified 1,202 articles, 748 were duplicates, 454 were excluded by abstract evaluation and 37 excluded based on full text appraisal, and 14 articles were finally included. The results of the included studies indicated an overall possible positive effect for social support for prevention of PTSD. However, the relationship is not a direct effect, and many confounding factors seems to play a role in this complex situation, such as gender, previous history of violent trauma, and self-efficacy. Future studies have to identify people who are prone to PTSD and can benefit from receiving social support, and they have to also make it clear what can constitute an effective social support.

中文翻译：

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地震幸存者的社会支持和创伤后应激障碍（PTSD）：系统评价

摘要创伤后应激障碍（PTSD）是地震后最常见的心理创伤之一。有人建议将社会支持作为一种保护因素，但是对于地震幸存者中预防和减少创伤后应激障碍的社会支持的影响仍然未知。本系统综述旨在探讨在地震幸存者中预防和减少创伤后应激障碍的社会支持的有效性。在Medline，PubMed，EMBASE，Cochrane库，PsycINFO和CINAHL中进行了电子搜索，包括系统评价，随机对照试验（RCT），队列研究，病例对照研究，横断面调查和案例研究。最初的搜索确定了1,202篇文章，其中748篇是重复文章，454篇被摘要评估排除，37篇基于全文评估被排除，最终包括14篇文章。纳入研究的结果表明，社会支持预防PTSD总体上可能具有积极作用。但是，这种关系不是直接的影响，许多混杂因素似乎在这种复杂的情况下发挥了作用，例如性别，先前的暴力创伤史和自我效能感。未来的研究必须确定容易患PTSD并可以从获得社会支持中受益的人，而且还必须弄清楚什么可以构成有效的社会支持。和自我效能感。未来的研究必须确定容易患PTSD并可以从获得社会支持中受益的人，而且还必须弄清楚什么可以构成有效的社会支持。和自我效能感。未来的研究必须确定容易患PTSD并可以从获得社会支持中受益的人，而且还必须弄清楚什么可以构成有效的社会支持。