Arphorn Sara, Augsornpeug Naiphaporn, Srisorrachatr Suwat, Pruktharathikul Vichai
Department of Occupational Health and Safety, Faculty of Public Health, Mahidol University, Thailand.
J Hum Ergol (Tokyo). 2003 Dec;32(2):87-94.
The comprehension of safety signs for construction workers was compared among existing and improved designs. Safety signs considered were existing signs, existing signs improved by adding text, existing signs improved by adding/changing pictorials, and existing signs improved by adding/changing pictorials and text. Three hundred and eighty-four construction workers were randomized for assignments into four groups. They were working on nine constructions work sites randomly selected from work sites located in Bangkok, Thailand. The number of workers in each work site was calculated for the proportion of the sample size and then they were randomized so that equal numbers of workers were included in the four groups. The four types of safety signs and an interview form were used to test their comprehension of safety signs. For data analysis, percentages, means, standard deviations, the chi-square test, the one-way ANOVA and LSD tests were applied. The results showed that the mean comprehension scores of the existing signs improved by adding text, the existing signs improved by adding/changing pictorials, and the existing signs improved by adding/changing pictorials and text were significantly higher than those of the existing signs. In addition, the mean comprehension scores of the existing signs improved by adding text and the existing signs improved by adding/changing pictorials and text were significantly higher than those of the existing signs improved by adding/changing pictorials. The highest mean comprehension score of safety signs for the construction workers was found in the existing signs improved by adding/changing pictorials and text. These results indicated that for construction workers, the comprehension of safety signs with pictorials and explanatory text was better than that of the existing signs.
对建筑工人对现有安全标志设计和改进后安全标志设计的理解情况进行了比较。所考虑的安全标志类型包括现有标志、添加文字后的现有标志、添加/更改图形后的现有标志以及添加/更改图形和文字后的现有标志。384名建筑工人被随机分配到四组。他们在从泰国曼谷的工作场所中随机选取的九个建筑工地工作。根据样本量比例计算每个建筑工地的工人数，然后进行随机分配，以使四组中的工人数相等。使用这四种类型的安全标志和一份访谈表格来测试他们对安全标志的理解。数据分析采用了百分比、均值、标准差、卡方检验、单因素方差分析和LSD检验。结果表明，添加文字后的现有标志、添加/更改图形后的现有标志以及添加/更改图形和文字后的现有标志的平均理解得分显著高于现有标志。此外，添加文字后的现有标志以及添加/更改图形和文字后的现有标志的平均理解得分显著高于添加/更改图形后的现有标志。建筑工人对安全标志的平均理解得分最高的是添加/更改图形和文字后的现有标志。这些结果表明，对于建筑工人来说，带有图形和解释性文字的安全标志的理解效果优于现有标志。
