Fig. 2From: Subtypes of nurses’ mental workload and interaction patterns with fatigue and work engagement during coronavirus disease 2019 (COVID-19) outbreak: A latent class analysisMultiple correspondence analysis plot. The categorical variables entered into the multiple correspondence analysis (MCA) model (based upon optimal scaling) to evaluate the potential association with mental workload. Each variable was visualized with a specific icon and the brief description was labeled near the icon. Interpretation of this graphic output was mainly based on the distance between category-iconsBack to article page