School of Arts and Humanities, Edith Cowan University, Perth, Western Australia, Australia; Takoradi Technical University, Takoradi, Western Region, Ghana.
School of Science, Edith Cowan University, Perth, Western Australia, Australia.
Sci Total Environ. 2021 Jun 1;771:144911. doi: 10.1016/j.scitotenv.2020.144911. Epub 2021 Jan 28.
Heat exposure studies over the last decade have shown little attention in assessing and reporting the psychometric properties of the various scales used to measure impacts of occupational heat stress on workers. A descriptive cross-sectional survey including 320 small- and large-scale mining workers was employed to assess the construct validity of the social impacts of occupational heat stress scale (SIOHSS) in the Western Region of Ghana in 2017. A confirmatory factor analysis (CFA) and invariance analysis were carried out using AMOS version 25 and statistical product and service solutions (SPSS) version 26 to examine the model fit and establish consistency correspondingly across multiple groups (gender, age, working hours, type of mining and workplace setting). Empirically, our results depicted that effects on health and safety, behavioural, productivity and social well-being were each found to be reliable, with Cronbach's α of 0.722, 0.807, 0.852 and 0.900 respectively. Though there were issues of insufficient discriminant validity as some average variance extract (AVE) were smaller than the corresponding maximum shared variance (MSV), the CFA showed good model fit indices (CFI = 0.856, GFI = 0.890, TLI = 0.863, SRMR = 0.08, RMSEA = 0.08). Also, the model was variant for all constrained aspects of the structural model indicating a requirement for an adaptation of the instrument across groups. The good to moderate internal consistency and construct validity of the SIOHSS is adequate evidence for the confidence required for its reliability and accuracy in measuring the social impacts of occupational heat stress on workers.
在过去十年中，热暴露研究很少关注评估和报告用于衡量职业热应激对工人影响的各种量表的心理计量特性。2017 年，在加纳西部地区，采用包括 320 名小型和大型采矿工人的描述性横断面调查，评估职业热应激量表的社会影响（SIOHSS）的结构效度。使用 AMOS 版本 25 和统计产品和服务解决方案（SPSS）版本 26 进行验证性因素分析（CFA）和不变性分析，以检查模型拟合度，并在多个组（性别、年龄、工作时间、采矿类型和工作场所设置）中相应地建立一致性。经验上，我们的结果表明，对健康和安全、行为、生产力和社会福利的影响分别被认为是可靠的，Cronbach 的 α 分别为 0.722、0.807、0.852 和 0.900。尽管存在不足的判别有效性问题，因为一些平均方差提取（AVE）小于相应的最大共享方差（MSV），但 CFA 显示出良好的模型拟合指数（CFI=0.856、GFI=0.890、TLI=0.863、SRMR=0.08、RMSEA=0.08）。此外，该模型在结构模型的所有约束方面都是变体，表明需要在群体之间对该工具进行调整。SIOHSS 的良好到中等的内部一致性和结构有效性为其在测量职业热应激对工人的社会影响的可靠性和准确性方面所需的信心提供了充分的证据。
