Does the installation of blue Lights on train platforms shift suicide to another station?: Evidence from Japan
Does the installation of blue Lights on train platforms shift suicide to another station?: Evidence from Japan
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在火车站台上安装蓝光是否会将自杀转移到另一个车站？：来自日本的证据
DOI：
10.1016/j.jad.2014.07.036
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发表时间：
2014
影响因子：
6.6
通讯作者：
Michiko Ueda
中科院分区：
文献类型：
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作者：
Tetsuya Matsubayashi;Yasuyuki Sawada;Michiko Ueda
背景在自杀热点设置物理屏障被认为是预防自杀的有效策略。然而，替代现象可能会抵消有形壁垒的效力，即，限制进入一个特定的地方诱导人们在危险中寻找一个附近的地方suicid.MethodsThis研究测试是否存在替代现象的情况下，铁路和地铁自杀。我们重点关注了日本一家铁路公司的预防工作，该公司在铁路站台上安装了蓝色发光二极管（LED）灯，以防止人们跳入运行的列车。我们使用2000年至2013年间71个火车站的面板数据，比较了安装蓝灯的14个车站和同一条铁路线上邻近的5个车站安装蓝灯前后的自杀人数，使用自杀人数在所有其他站没有干预作为对照组。发现我们的回归分析表明，蓝色的引入，在安装了蓝灯的车站，蓝灯的使用使自杀人数减少了74%（CI：48-87%），而在邻近的车站，蓝灯的使用并没有导致自杀人数的系统性增加。
BackgroundInstalling physical barriers at suicide hotspots is known as an effective strategy for suicide prevention. However, the effectiveness of physical barriers may be nullified by the substitution phenomenon, i.e., that restricting access to a particular place induces people at risk to look for a nearby place for suicide.MethodsThis study tests whether the substitution phenomenon exists in the case of railway and metro suicides. We focused on the prevention effort by a Japanese railway company that installed blue light-emitting-diode (LED) lamps on railway platforms to prevent people from diving to a running train. Using panel data of 71 train stations between 2000 and 2013, we compared the number of suicides before and after the installation of the blue lights at 14 stations where the lights were installed and at neighboring five stations on the same railway line, using the number of suicides at all other stations without the intervention as a control group.FindingsOur regression analysis shows that the introduction of blue lights decreased the number suicides by 74% (CI: 48–87%) at stations where the blue lights were installed, while it did not result in a systematic increase in the number of suicides at the neighboring stations.InterpretationThe installation of blue lights generated no systematic substitution phenomenon at nearby stations.