Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran.
Research Center for Health, Safety and Environment, Alborz University of Medical Sciences, Karaj, Iran.
Int J Occup Saf Ergon. 2020 Jun;26(2):219-226. doi: 10.1080/10803548.2017.1408243. Epub 2018 Feb 5.
. Occupational safety in general, and construction safety in particular, is a complex phenomenon. This study was designed to develop a new valid measure to evaluate factors affecting unsafe behavior in the construction industry. . A new questionnaire was generated from qualitative research according to the principles of grounded theory. Key measurement properties (face validity, content validity, construct validity, reliability and discriminative validity) were examined using qualitative and quantitative approaches. The receiver operating characteristic curve was used to estimate the discriminating power and the optimal cutoff score. . Construct validity revealed an interpretable 12-factor structure which explained 61.87% of variance. Good internal consistency (Cronbach's = 0.94) and stability (intra-class correlation coefficient = 0.93) were found for the new instrument. The area under the curve, sensitivity and specificity were 0.80, 0.80 and 0.75, respectively. The new instrument also discriminated safety performance among the construction sites with different workers' accident histories ( = 6.40, < 0.05). . The new instrument appears to be a valid, reliable and sensitive instrument that will contribute to investigating the root causes of workers' unsafe behaviors, thus promoting safety performance in the construction industry.
一般职业安全，特别是建筑安全，是一个复杂的现象。本研究旨在开发一种新的有效方法来评估建筑行业中不安全行为的影响因素。通过扎根理论的原则，从定性研究中生成了一个新的问卷。使用定性和定量方法检查了关键测量特性（表面效度、内容效度、结构效度、可靠性和判别效度）。接收者操作特征曲线用于估计判别力和最佳截断分数。结构效度揭示了一个可解释的 12 因素结构，解释了 61.87%的方差。新仪器具有良好的内部一致性（克朗巴赫 α=0.94）和稳定性（组内相关系数=0.93）。曲线下面积、灵敏度和特异性分别为 0.80、0.80 和 0.75。该新仪器还可以区分具有不同工人事故史的建筑工地的安全绩效（t=6.40，p<0.05）。新仪器似乎是一种有效、可靠和敏感的工具，将有助于调查工人不安全行为的根本原因，从而提高建筑行业的安全绩效。
