中文版肌肉疲劳评估方法在汽车制造企业应用的信效度检验

Reliability and validity test of Chinese version of Muscle Fatigue Assessment Method in automobile manufacturing industry

目的检验中文版肌肉疲劳评估方法(MFA)在汽车制造业中的信度和效度。方法选择我国某大型汽车制造企业236名具代表性的作业工人,应用重测、内部、折半信度和KMO检验(Kaiser-Meyer-Olkin)及巴特利(Bartlett)球体检验等方法对MFA在肌肉骨骼疲劳评估应用中的信效度进行检验分析。结果重测信度总的组内相关系数(ICC)为0.971,各维度ICC范围0.800~1.000;内部信度总的Cronbach’sα系数为0.827,各维度的Cronbach’sα系数范围0.439~0.997;折半信度为0.985。效度上主因素分析原则提出2个公因子,累计方差贡献率达65.605%,反映了肩、肘、手腕/手指、膝盖、脚踝/脚趾、背和颈的工效学危害因素权重。结论中文版MFA用于我国汽车制造业工人不良工效学因素的识别和评估具有较好的信度和效度,但仍需结合行业特点考虑工业生产中存在的特殊因素。

Objective To test the reliability and validity of the Chinese version of Muscle Fatigue Assessment Method(MFA)in automobile manufacturing industry.Methods 236 representative workers of a large automobile manufacturing enterprise in China were selected as study subjects,and the methods of retest,internal,half-reliability,KMO and Bartlett sphere test were also used for the check of reliability and validity in musculoskeletal fatigue assessment.Results The results showed that the total intra-group correlation coefficient(ICC)of retest reliability was 0.971,and the ICC range of dimensions was between 0.800 and 1.000,the total Cronbach’sαcoefficient of internal reliability was 0.827,the Cronbach’sαcoefficient range of dimensions was 0.439 to 0.997,the half-reliability was 0.985.The main factor analysis principle proposed two common factors,the cumulative variance contribution rate reached 65.605%,and reflected the weights of ergonomic hazard factors for shoulders,elbows,wrists/fingers,knees,ankles/toes,back and neck.Conclusion The results suggested that the Chinese version of MFA has good reliability and validity,which is suitable for the identification and evaluation of poor ergonomic factors of workers in China’s automobile manufacturing industry.However,it is still necessary to consider the special factors based on the characteristics of industrial production.