某电子配件加工厂作业人员肌肉骨骼疾患发生模式潜在类别分析

Analyzing the potential category of occurrence pattern of musculoskeletal disorders among workers in an electronic parts processing factory

目的探讨电子配件加工作业人员工作相关肌肉骨骼疾患(WMSDs)发生模式。方法采用判断抽样方法,选取某电子配件加工厂498名作业人员为研究对象,采用《中国肌肉骨骼问卷》收集其在过去1年WMSDs发生情况,采用潜在类别模型对其WMSDs的潜在类别进行分类。结果研究对象在过去1年中WMSDs的发生率为46. 8%(233/498),其中,WMSDs仅涉及1个部位的发生率为13. 1%(65/498),至少涉及2个部位的发生率为33. 7%(168/498)。多部位WMSDs发生率是单一部位WMSDs的6~58倍。依据潜在类别分析,将研究对象WMSDs发生模式分为颈和肩发生组(135人)、各部位均发生组(31人)、极少或无部位发生组(332人),分别占27. 1%、6. 2%和66. 7%。结论电子配件加工作业人员WMSDs的多部位发生较单一部位常见;潜在类别分析可用于WMSDs发生模式的探讨。

Objective To explore the occurrence pattern of work-related musculoskeletal disorders( WMSDs) in electronic parts processing workers. Methods A total of 498 workers from an electronic parts processing factory were selected as study subjects by judgement sampling method. The prevalence of WMSDs in the past 1 year was investigated by using the China Musculoskeletal Questionnaire. The potential category model was used to classify the categories of WMSDs. Results The incidence of WMSDs in the past 1 year was 46. 8%( 233/498). Among them,the incidence of WMSDs involving only one site was 13. 1%( 65/498),and those involving at least 2 sites were 33. 7%( 168/498). The multi-site WMSDs were about 6-58 times of the single-site WMSDs. According to potential category analysis,the occurrence patterns of WMSDs were divided into three categories: i) cervical and shoulder occurrence group( 135 persons,27. 1%);ii) all parts group( 31 persons,6. 2%);iii) few or no site group( 332 persons,66. 7%). Conclusion The occurrence of multi-site WMSDs in electronic parts processing workers were more common than the single-site. Analysis of potential category can be used to explore the occurrence pattern of WMSDs.