延长工作时间与急性职业伤害风险：一项针对制造业工人的病例交叉研究
Extended work hours and risk of acute occupational injury: A case-crossover study of workers in manufacturing.
作者信息
Vegso S, Cantley L, Slade M, Taiwo O, Sircar K, Rabinowitz P, Fiellin M, Russi M B, Cullen M R
机构信息
Yale Occupational and Environmental Medicine Program, Department of Internal Medicine, Yale University School of Medicine, New Haven, Connecticut, USA.
出版信息
Am J Ind Med. 2007 Aug;50(8):597-603. doi: 10.1002/ajim.20486.
OBJECTIVE
This study was designed to determine whether injury risk among manufacturing workers was related to hours worked during the previous week.
METHODS
A case-crossover design was utilized to contrast hours worked prior to an injury shift with those worked prior to a non-injury shift for hourly workers. Paired t-tests were used to determine significance of the difference. Conditional logistic regression was used to assess dose-response.
RESULTS
Hours worked prior to injury significantly exceeded hours during the control week. Workers who worked more than 64 hr in the week before the shift had an 88% excess risk compared to those who worked 40 hr or fewer, P < 0.05.
CONCLUSION
The study provides evidence that injury risk is related to time worked during the previous week. Control of overtime in manufacturing may reduce risk of worker injury.
目的
本研究旨在确定制造业工人的受伤风险是否与前一周的工作时长有关。
方法
采用病例交叉设计，对比小时工受伤班次前的工作时长与未受伤班次前的工作时长。使用配对t检验来确定差异的显著性。使用条件逻辑回归来评估剂量反应。
结果
受伤前的工作时长显著超过对照周的时长。与工作40小时及以下的工人相比，轮班前一周工作超过64小时的工人受伤风险高出88%，P<0.05。
结论
该研究提供了证据表明受伤风险与前一周的工作时间有关。控制制造业中的加班时间可能会降低工人受伤的风险。
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