 This study investigates the psychological outcome characteristics of nurses in different Asia-Pacific countries and compares them to other healthcare workers, finding that nurses were least psychologically affected compared to doctors and other healthcare workers. The study uses machine learning models to identify the most distinctive psychological outcome characteristic that differentiates nurses from other healthcare workers, which is stress. The study also demonstrates the potential use of decision-tree-based machine learning models and SHAP value plots in identifying contributing factors of sophisticated problems in the healthcare industry. This article was authored by Yan Hongdong, Mei Chun-Yi-Oh, Xiang Tsung-Tam, and others.