Department of Occupational Medicine, University of Toronto, Toronto, Ontario, Canada.
Institute for Work & Health, Toronto, Ontario, Canada.
Occup Med (Lond). 2020 Dec 12;70(8):570-577. doi: 10.1093/occmed/kqaa175.
Although the association of cannabis use with automobile accidents has been well-studied, the impact of cannabis on workplace safety and injuries is less clear.
The purpose of this study was to examine the relationship between work-related injury and cannabis use in the past year.
We performed a cross-sectional analysis of the Canadian Community Health Survey (2013-16) of working individuals. We used multiple logistic regression modelling to calculate the odds of experiencing a work-related injury (defined as non-repetitive strain injury) among workers who reported using cannabis more than once during the prior 12 months as compared to non-users. We repeated the analysis among participants working in high injury risk occupational groups only.
Among the 136 536 working participants, 2577 (2%) had a work-related injury in the last 12 months. Of these 2577 who had a work-related injury, 4% also reported being a cannabis user in the same period. We found no association between past-year cannabis use and work-related injury (odds ratio for work injury among users 0.81, 95% confidence interval 0.66-0.99). The association was unchanged in the subgroup analysis limited to high injury risk occupational groups.
We found no evidence that cannabis users experienced higher rates of work-related injuries. While awaiting prospective studies, occupational medicine practitioners should take a risk-based approach to drafting workplace cannabis policies.
尽管大麻使用与车祸之间的关联已得到充分研究，但大麻对工作场所安全和伤害的影响尚不清楚。
本研究旨在探讨过去一年中与工作相关的伤害与大麻使用之间的关系。
我们对加拿大社区健康调查（2013-16 年）中的在职个体进行了横断面分析。我们使用多变量逻辑回归模型，计算了在过去 12 个月内报告使用大麻超过一次的劳动者与非使用者相比，经历与工作相关的伤害（定义为非重复性劳损）的几率。我们仅在从事高伤害风险职业群体的参与者中重复了该分析。
在 136536 名工作参与者中，有 2577 人（2%）在过去 12 个月内发生了与工作相关的伤害。在这 2577 名发生工作相关伤害的人中，有 4%的人在同一时期也报告了大麻使用者。我们没有发现过去一年的大麻使用与工作相关的伤害之间存在关联（使用者发生工作伤害的比值比为 0.81，95%置信区间为 0.66-0.99）。在仅限于高伤害风险职业群体的亚组分析中，该关联保持不变。
我们没有发现大麻使用者发生工作相关伤害的比率更高的证据。在等待前瞻性研究的同时，职业医学从业者应采取基于风险的方法制定工作场所大麻政策。
