University College London, London, United Kingdom.
Accid Anal Prev. 2011 May;43(3):1279-83. doi: 10.1016/j.aap.2011.01.010.
This note is intended to rectify estimates provided in a previous paper (Wong et al., 2006) of the short-term effectiveness in terms of road fatality reduction of the setting of quantified road safety targets using data from 14 OECD countries during the period 1980-1999. This work is important in measuring the association between target setting and road safety improvement, because such targets are intended to serve as a useful tool to motivate timely road safety measures by the road authorities and others. The estimates to be rectified were based on before-and-after analysis using a comparison group of countries for each country that had set a target. This note first provides a correction to the qualification test for the inclusion of a country in any particular comparison group. It then presents the numerical effects of this correction on the estimates of the effectiveness of setting quantified road safety targets, both in individual countries and across the whole group of countries that set targets in the relevant period. Finally, impacts on the findings of the previous paper are discussed, with the conclusion that the changes in those of the numerical estimates that are affected do not alter the main message of the paper.
本注释旨在纠正之前一篇论文（Wong 等人，2006 年）中使用 1980-1999 年期间 14 个经合组织国家的数据对设定量化道路安全目标在减少道路死亡方面的短期效果的估计。这项工作对于衡量目标设定与道路安全改善之间的关系非常重要，因为这些目标旨在作为激励道路当局和其他方面及时采取道路安全措施的有用工具。要纠正的估计数是基于每个设定目标的国家与一个比较国家组进行前后对比分析得出的。本注释首先对将一个国家纳入任何特定比较组的资格测试进行了更正。然后，它展示了这种更正对设定量化道路安全目标的有效性的估计数的数值影响，无论是在个别国家还是在整个设定目标的国家组中。最后，讨论了对前一篇论文结果的影响，结论是受影响的数值估计数的变化不会改变论文的主要信息。
