Buapetch Aporntip, Lagampan Sunee, Faucett Julia, Kalampakorn Surintorn
Department of Public Health Nursing, Faculty of Public Health, Mahidol University, Thailand.
J Occup Health. 2008;50(6):480-91. doi: 10.1539/joh.l8017. Epub 2008 Oct 23.
This study aimed to test the psychometric properties of the Thai version of the Effort-Reward Imbalance Questionnaire (T-ERIQ). The English version of the 23-item ERIQ was translated and back-translated. Content validity was examined by five experts and face validity was examined by twelve key informants before being tested for construct validity with 828 workers from six garment factories. Predictive validity was assessed through the relationship between the ERI constructs and psychological health outcomes including psychosomatic symptoms, state of anxiety, depression, and job satisfaction. The internal consistency of the Thai ERIQ was tested using the first survey (n=828), and test-retest stability was examined 2 to 4 wk later with a subsample (n=408). The results show that 2% of workers reported effort-reward imbalance (ERI ratio>/=1). The Thai ERIQ has good content validity with a Content Validity Index of 0.95. Cronbach's alpha coefficients for the effort, reward, and overcommitment scales were 0.77, 0.81, and 0.66, respectively. The 2-4 wk stability of these three constructs was moderate (r=0.496-0.576, p<0.001). Overall, the factorial validity was demonstrated as the best model fit, with high values of the goodness-of-fit indices, using confirmatory factor analysis, indicating accordance with the theoretical constructs of the ERI model. Logistic regression analyses supported significant associations of reward with all psychological health outcomes (p<0.05). The findings suggest that the Thai ERIQ has adequate reliability and validity to investigate the psychosocial work environment. The Thai ERIQ can be applied to the Thai working population, particularly industrial manufacturing workers.
本研究旨在检验泰语版努力-回报失衡问卷（T-ERIQ）的心理测量特性。对包含23个条目的英文版ERIQ进行了翻译和回译。在对来自6家服装厂的828名工人进行结构效度测试之前，由5位专家检验内容效度，12位关键 informant 检验表面效度。通过ERIQ各维度与心理健康结果（包括心身症状、焦虑状态、抑郁和工作满意度）之间的关系评估预测效度。使用首次调查（n=828）检验泰语ERIQ的内部一致性，并在2至4周后对一个子样本（n=408）进行重测稳定性检验。结果显示，2%的工人报告存在努力-回报失衡（ERI比率≥1）。泰语ERIQ具有良好的内容效度，内容效度指数为0.95。努力、回报和过度投入量表的克朗巴哈α系数分别为0.77、0.81和0.66。这三个维度在2至4周后的稳定性中等（r=0.496 - 0.576，p<0.001）。总体而言，通过验证性因子分析表明，因子效度表现为最佳模型拟合，拟合优度指数值较高，表明符合ERIQ模型的理论结构。逻辑回归分析支持回报与所有心理健康结果之间存在显著关联（p<0.05）。研究结果表明，泰语ERIQ在调查心理社会工作环境方面具有足够的信度和效度。泰语ERIQ可应用于泰国劳动人口，尤其是工业制造业工人。
