Daigle Marc S
Centre for Research and Intervention on Suicide and Euthanasia and Philippe Pinel Institute, University of Québec at Trois-Rivières, P.O. Box 500, Trois-Rivières, Que., Canada G9A 5H7.
Accid Anal Prev. 2005 Jul;37(4):625-32. doi: 10.1016/j.aap.2005.03.004. Epub 2005 Apr 1.
The effectiveness of restricting access to certain means of committing suicide has been demonstrated, at least as regards toxic domestic gas, firearms, drugs and bridges. At the individual level, studies tend to indicate that many persons have a preference for a given means, which would limit the possibility of substitution or displacement towards another method. Similarly, the fact that suicidal crisis are very often short-lived (and, what is more, influenced by ambivalence or impulsiveness) suggests that an individual with restricted access to a given means would not put off his plans to later or turn to alternative methods. This has been more difficult to demonstrate scientifically in population studies. Nevertheless, it appears that, should such a shift occur towards other means, it would be put into effect only in part and over a longer term.
限制使用某些自杀方式的有效性已得到证实，至少在有毒家用气体、枪支、毒品和桥梁方面是如此。在个体层面，研究倾向于表明，许多人偏好某一种特定方式，这会限制改用或转向其他方法的可能性。同样，自杀危机往往是短暂的（而且，更重要的是，受矛盾心理或冲动影响）这一事实表明，难以获取某一特定方式的个体不会将其计划推迟到以后或转向其他方法。这一点在人群研究中更难得到科学证明。然而，似乎如果真的转向其他方式，也只会部分且在较长时期内实现。
