Recently, there has been activity at public locations where people have died by suicide, including the erection of suicide prevention messages and memorials (decorations). This research looks at the impact of these decorations and associated media coverage of the decorations on suicidal behaviour at bridges. Incidents (n = 160) of suicidal behaviour on 26 bridges across motorways in England were analysed. Overall, there was no significant difference in the proportion of incidents pre-decoration versus post-decoration (p-value = .55). The incident rates were not significantly different pre- and post-decoration (p = .46). Only one bridge had statistically significantly more incidents post-decoration and media reporting (p = .03). However, following correction for multiple testing there was no significant difference in pre- and post-incident rates at any of the bridges. In total, 58% of bridges had a greater frequency of incidents when decorations were absent; however, this proportion was not statistically significant (p = .41). Further research is required to establish how suicide prevention messages are perceived. There does not appear to be any benefit, but it often generates media coverage which has been shown to increase risk.

中文翻译：

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自杀预防信息和纪念碑对高速公路桥梁的影响分析

最近，有人在自杀死亡的公共场所进行了活动，包括竖立自杀预防信息和纪念碑（装饰品）。本研究着眼于这些装饰品和相关媒体报道对桥梁自杀行为的影响。 分析了英格兰高速公路上 26 座桥梁上的自杀行为事件 ( n = 160)。总体而言，装饰前与装饰后的事件比例没有显着差异（p值 = .55）。装修前后的发生率没有显着差异（p  = .46）。只有一座桥梁在装饰后和媒体报道中发生的事故统计显着更多（p = .03）。然而，在对多次测试进行校正后，任何一座桥梁的事故前和事故后发生率都没有显着差异。总的来说，58% 的桥梁在没有装饰时发生事故的频率更高；然而，这一比例在统计上并不显着（p  = .41）。需要进一步的研究来确定如何理解自杀预防信息。似乎没有任何好处，但它通常会产生媒体报道，这已被证明会增加风险。