Matthew Hallowell isn’t afraid to disrupt the established thinking in construction safety measurement. That much is clear so far from his research work, both as a professor of civil engineering at the University of Colorado Boulder and as executive director of the Construction Safety Research Alliance, which started in 2019.

他关于更加重视致命事故而不是受伤的一些想法是明显的，早在2016年。作为建筑行业研究所进行的安全研究的首席研究员，哈洛威尔在其年度全国会议上发表了一种分析方法，该方法是一种分析方法，该方法表明，新利luck他帮助设计了死亡的风险。

The work was motivated by the understanding that, although recordable injury rates in the construction industry had declined over the last decade, there had not been a corresponding fall in the fatality rates.

Four years later, a new research project conducted by the alliance has cast the industry’s national success with injuries in a different light—and raised a fundamental question of what it means to be a safe employer. In the study, published in the journal Professional Safety, Hallowell and his research partners systematically examined the logic behind the centerpiece of most construction safety programs—the total recordable incident rate (TRIR)—and found it lacking.

在简单的语言中，这种常用速率的典型计算无法满足现代统计分析的标准。例如，由于大多数公司的事件相对很少见，因此，除非至少来自3亿个工作时间来计算一个有意义的小数点，否则不应执行一些有意义的小数点的常见做法。作者说，典型的三轮车也不应被用来区分安全计划的价值或成功，或者将一家公司的安全绩效与另一个公司的安全绩效进行比较。

The TRIR paper also seemed to overturn a cherished safety theory: By controlling injuries, employers create a firm foundation that also will limit fatalities. The study “debunks the notion that reducing TRIR is a surrogate for mitigating the risk of high-impact events,” the authors wrote.

TRIR研究激发了安全专业人员，他们感觉到对该措施的统计痴迷产生了有效性的幻想，并且走得太远了。对某些人而言，这意味着更多地关注死亡，而较少的胳膊和脚踝扭伤。Adolfson＆Peterson Construction的安全经理杰里米·哈克斯（Jeremy Hakes）说：“让研究能够得到我们的感受，这是非常有效的。”

Hallowell credits early mentors T. Michael Toole, now dean of the University of Toledo college of engineering, and John A. Gambatese, professor of civil engineering at Oregon State University, for providing him with the skills to pursue his own “research trajectory.” That seems likely to include an updated definition of what it means for a construction employer to be considered safe.