Objective

To examine differences in demographic, psychosocial, and job physical exposure risk factors between multiple low back pain (LBP) outcomes in a prospective cohort of industrial workers.

Background

LBP remains a leading cause of lost industrial productivity. Different case definitions involving pain (general LBP), medication use (M-LBP), seeking healthcare (H-LBP), and lost time (L-LBP) are often used to study LBP outcomes. However, the relationship between these outcomes remains unclear.

Method

Demographic, health status, psychosocial, and job physical exposure risk factors were quantified for 635 incident-eligible industrial workers. Incident cases of LBP outcomes and pain symptoms were quantified and compared across the four outcomes.

Results

Differences in age, gender, medical history, and LBP history were found between the four outcomes. Most incident-eligible workers (67%) suffered an LBP outcome during follow-up. Cases decreased from 420 for LBP (25.4 cases/100 person-years) to 303 for M-LBP (22.0 cases/100 person-years), to 151 for H-LBP (15.6 cases/100 person-years), and finally to 56 for L-LBP (8.7 cases/100 person-years). Conversely, pain intensity and duration increased from LBP to H-LBP. However, pain duration was relatively lower for L-LBP than for H-LBP.

Conclusion

Patterns of cases, pain intensity, and pain duration suggest the influence of the four outcomes. However, few differences in apparent risk factors were observed between the outcomes. Further research is needed to establish consistent case definitions.

Application

Knowledge of patterns between different LBP outcomes can improve interpretation of research and guide future research and intervention studies in industry.

中文翻译：

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评估美国体力搬运工人腰痛的不同测量：人口、心理社会和工作身体接触的比较

客观的

研究前瞻性产业工人队列中多种腰痛 (LBP) 结果之间人口统计学、社会心理和工作身体暴露风险因素的差异。

背景

LBP 仍然是导致工业生产力下降的主要原因。涉及疼痛（一般 LBP）、药物使用（M-LBP）、寻求医疗保健（H-LBP）和失去时间（L-LBP）的不同病例定义通常用于研究 LBP 结果。然而，这些结果之间的关系仍不清楚。

方法

对 635 名符合事故条件的产业工人的人口统计、健康状况、心理社会和工作身体暴露风险因素进行了量化。LBP 结果和疼痛症状的事件案例被量化并在四个结果之间进行比较。

结果

在四种结局之间发现了年龄、性别、病史和腰痛病史的差异。大多数符合事故条件的工人 (67%) 在随访期间出现了 LBP 结果。病例从腰痛的 420 例（25.4 例/100 人年）减少到 M-LBP 的 303 例（22.0 例/100 人年），再到 H-LBP 的 151 例（15.6 例/100 人年），最终降至L-LBP 56 例（8.7 例/100 人年）。相反，疼痛强度和持续时间从 LBP 增加到 H-LBP。然而，L-LBP 的疼痛持续时间相对低于 H-LBP。

结论

病例模式、疼痛强度和疼痛持续时间表明了四种结果的影响。然而，在结果之间观察到的明显危险因素几乎没有差异。需要进一步研究以建立一致的病例定义。

应用

了解不同 LBP 结果之间的模式可以改善对研究的解释，并指导未来的工业研究和干预研究。