# Ep 208 - The 3 AM TRIR Frustration (Evaluating ASOHMS vs. Z10)

Page: https://stenobird.com/podcast/prove-it-to-me-real-research-real-data-no-bs-7096700/ep-208-the-3-am-trir-frustration-evaluating-asohms-vs-z10
Text version: https://stenobird.com/podcast/prove-it-to-me-real-research-real-data-no-bs-7096700/ep-208-the-3-am-trir-frustration-evaluating-asohms-vs-z10.md
Podcast: [Prove It To Me - Real Research, Real Data, No BS](https://stenobird.com/podcast/prove-it-to-me-real-research-real-data-no-bs-7096700)
Published: 2026-03-20T09:00:00+00:00
Episode link: https://www.proveitpod.com/e/ep-208-the-3-am-trir-frustration-evaluating-asohms-vs-z10/
Audio file: https://mcdn.podbean.com/mf/web/ee8kb4w6jav5kigv/Episode_208_-_3_19_26_701_PM70mxv.mp3
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JSON: https://stenobird.com/v1/public/podcasts/prove-it-to-me-real-research-real-data-no-bs-7096700/episodes/ep-208-the-3-am-trir-frustration-evaluating-asohms-vs-z10
Duration seconds: 1164

## Resource

In this #StudyFinds episode of #ProveItPod, Dr. Matt Law battles post-conference road fatigue to tackle a brand new case study from the International Journal of Construction Management. The study reviews the implementation of the Army Safety and Occupational Health Management System (ASOHMS) within a USACE district. While the researchers found a correlation between the system's implementation and a reduction in contractor incident rates, the episode dives deep into the statistical methodology. We compare ASOHMS to ANSI/ASSP Z10 and ISO 45001, break down the double-edged sword of "rolling averages," and ask a tough question: If landmark research proves that TRIR is statistically invalid and driven by random variance, can we really use it to prove our complex management systems are working? References: American Society of Safety Professionals. (2019). Occupational health and safety management systems (ANSI/ASSP Z10.0-2019). Hallowell, M., Quashne, M., Salas, R., Jones, M., MacLean, B., & Quinn, E. (2021). The statistical invalidity of TRIR as a measure of safety performance. Professional Safety, 66(4), 28–34. Moskowitz, J. M., & McCranie, J. B. (2025). Investigating the impact of army safety and occupational health management system implementation on safety performance indices: case study of a U.S. Army Corps of Engineers district. International Journal of Construction Management, 1–17. https://doi.org/10.1080/15623599.2025.2537722 U.S. Army Corps of Engineers. (2024). Safety and health requirements manual (EM 385-1-1).

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