Center for Injury Epidemiology, Liberty Mutual Research Institute for Safety, 71 Frankland Road, Hopkinton, MA 01748, USA.
Scand J Work Environ Health. 2011 Nov;37(6):525-32. doi: 10.5271/sjweh.3174. Epub 2011 Jun 13.
Ladder falls comprise 16% of all US workplace fall-related fatalities, and ladder use may be particularly hazardous among older workers. This follow-back study of injured workers from a nationally representative sample of US emergency departments (ED) focused on factors related to ladder falls in three domains of the work environment: work equipment, work practices, and worker-related factors. Risk factors for fractures, the most frequent and severe outcome, were also evaluated.
Workers injured from a ladder fall, treated in one of the 65 participating ED in the occupational National Electronic Injury Surveillance System (NEISS) were asked to participate. The questionnaire included worker demographics, injury, ladder and work equipment and environment characteristics, work tasks, and activities. Multivariate logistic regression models estimated odds ratios and 95% confidence intervals of a work-related fracture.
Three-hundred and six workers experiencing an injury from an--on average--7.5-foot-fall from a step, extension, or straight ladder were interviewed primarily from construction, installation, maintenance, and repair professions. Injuries were most frequently to the arm, elbow or shoulder; head, neck, or face with diagnoses were primarily fracture, strain, sprain, contusion or abrasion. Workers were most frequently standing or sitting on the ladder while installing, hanging an item, or performing a repair when they fell. Ladder movement was the mechanism in 40% of falls. Environmental conditions played a role in <10% of cases. There was a significant association between fracture risk and fall height while working on the ladder that was also influenced by older work age.
This study advances knowledge of falls from ladders to support those who specify means and methods, select equipment, and plan, supervise, or manage the performance of employees working at heights.
梯子坠落占美国所有工作场所与坠落相关的致命事故的 16%,而在老年工人中,梯子的使用可能特别危险。这项对美国国家电子伤害监测系统(NEISS)中参与的 65 个急诊部中受伤工人的随访研究,重点关注工作环境三个领域与梯子坠落相关的因素:工作设备、工作实践和工人相关因素。还评估了最常见和最严重的后果——骨折的危险因素。
从参与职业性国家电子伤害监测系统(NEISS)的 65 个急诊部之一接受治疗的因梯子坠落而受伤的工人中邀请他们参与。问卷包括工人的人口统计学特征、受伤情况、梯子和工作设备及环境特征、工作任务和活动。多变量逻辑回归模型估计了与工作相关的骨折的比值比和 95%置信区间。
306 名工人从 7.5 英尺高的台阶、延伸或直梯上平均坠落 1 英尺,主要来自建筑、安装、维护和修理行业。受伤最常见的部位是手臂、肘部或肩部;头部、颈部或面部的诊断主要是骨折、扭伤、拉伤、挫伤或擦伤。工人在安装、悬挂物品或进行维修时,最常站在或坐在梯子上。40%的坠落是由于梯子移动造成的。环境条件在<10%的情况下起作用。在梯子上工作时的坠落高度与骨折风险之间存在显著关联,这种关联也受到较年长的工作年龄的影响。
这项研究提高了对梯子坠落的认识,为指定手段和方法、选择设备以及规划、监督或管理在高处工作的员工的表现提供了支持。