Validation set

This study included patients who were diagnosed with gastric cancer from 2005 to 2013 in Kyungpook National University Hospital and who had data of HDL-C, glucose, and BMI at diagnosis (n=3,346). The private health screening population was used as the control group (Fig. 1B). Among health screening persons who underwent endoscopy and laboratory examination, those who had no gastric neoplasm were enrolled as controls (n=19,609). We further excluded individuals younger than 40 years of age in both gastric cancer (n=120) and control groups (n=1,824). The requirement of informed consent was waived because this study reviewed medical records, did not include personal identification information, and had no effect on disease course.