Real-time safety inspection and planning: A first application of the Fagan nomogram

The Fagan nomogram is a graphical tool used for clinical diagnosis and treatment. Considering the similarities between safety inspections and disease diagnosis, this study set out to apply the Fagan nomogram to construction sites with a goal of improving real-time safety inspection and planning. First, the basic principle of the Fagan nomogram was analyzed to determine its applicability. Then, the quantitative relationships between related risks were calculated using the Fagan nomogram. Subsequently, the results were compared with those obtained by Bayesian parameter estimation. A case study was then undertaken to enhance the understanding of its usage and the results were validated through a focus group interview. As a result, the Fagan nomogram was proven to be an effective method for quantifying the causal relationships and risk probability for safety risks, making it a new, simple, and accurate graphical approach for future real-time safety inspections and planning on a construction site.