Sangsoo Shin, Jane Pirkis, Angela Clapperton, Matthew Spittal
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During the installation of the nets, suicides declined by 26% (rate ratio (RR)=0.74, 95% CI 0.60 to 0.90) and after installation by 73% (RR=0.27, 95% CI 0.13 to 0.54). There were 2901 instances where a third party intervened, 8.22 per month before installation, 14.42 during installation and 11.00 after installation. The number of interventions by a third party increased during installation by 75% (RR=1.75, 95% CI 1.62 to 1.90) and after installation by 34% (RR=1.34, 95% CI 1.12 to 1.60).</p><p><strong>Conclusions: </strong>The early evidence indicates the installation of safety nets on the Golden Gate Bridge is associated with an immediate and substantial reduction in suicides at the site. 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引用次数: 0
摘要
背景：限制手段的获取是一种非常有效的自杀预防策略。我们评估了安装在金门大桥上防止跳楼自杀的网的有效性。方法：采用泊松回归分析方法，对2000年1月至2024年12月金门大桥安装安全网前、期间和之后的自杀行为进行了模型分析。我们还模拟了第三方干预桥上有自杀危险迹象的人的次数。结果：现场自杀681人。安装安全网前每月自杀人数为2.48人，安装期间为1.83人，安装后为0.67人。在安装蚊帐期间，自杀率下降了26%（比率比(RR)=0.74, 95% CI 0.60至0.90），安装蚊帐后自杀率下降了73% （RR=0.27, 95% CI 0.13至0.54）。有2901个实例存在第三方干预，安装前每月8.22个，安装期间每月14.42个，安装后每月11.00个。第三方干预的数量在安装期间增加了75% (RR=1.75, 95% CI 1.62至1.90)，安装后增加了34% （RR=1.34, 95% CI 1.12至1.60）。结论：早期的证据表明，在金门大桥上安装安全网与现场自杀事件的直接和实质性减少有关。这一发现强调了在这座桥上安装网的价值，以及屏障作为防止跳楼自杀策略的重要性。
Change in suicides during and after the installation of barriers at the Golden Gate Bridge.
Background: Restricting access to means is a highly effective suicide prevention strategy for some methods. We evaluated the effectiveness of nets installed at the Golden Gate Bridge to prevent suicides by jumping at this site.
Methods: We used Poisson regression analyses to model suicide before, during and after the installation of safety nets at the Golden Gate Bridge between January 2000 and December 2024. We also modelled the number of times a third party intervened with someone showing signs of imminent suicide risk on the bridge.
Results: There were 681 suicides at the site. There were 2.48 suicides per month before installation of the safety nets, 1.83 during installation and 0.67 after installation. During the installation of the nets, suicides declined by 26% (rate ratio (RR)=0.74, 95% CI 0.60 to 0.90) and after installation by 73% (RR=0.27, 95% CI 0.13 to 0.54). There were 2901 instances where a third party intervened, 8.22 per month before installation, 14.42 during installation and 11.00 after installation. The number of interventions by a third party increased during installation by 75% (RR=1.75, 95% CI 1.62 to 1.90) and after installation by 34% (RR=1.34, 95% CI 1.12 to 1.60).
Conclusions: The early evidence indicates the installation of safety nets on the Golden Gate Bridge is associated with an immediate and substantial reduction in suicides at the site. This finding highlights the value of installing nets on this bridge and the importance of barriers as a strategy to prevent suicides by jumping.
期刊介绍：
Since its inception in 1995, Injury Prevention has been the pre-eminent repository of original research and compelling commentary relevant to this increasingly important field. An international peer reviewed journal, it offers the best in science, policy, and public health practice to reduce the burden of injury in all age groups around the world. The journal publishes original research, opinion, debate and special features on the prevention of unintentional, occupational and intentional (violence-related) injuries. Injury Prevention is online only.
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