Table 2. Categories of subjects and diseases for learning and evaluation in the database of the XueYiKu app.

Subjects	Category	Diseases
Internal Medicine	20	Coronary heart disease, heart failure, arrhythmia, hypertension, pneumonia, chronic airway inflammatory disease, pleural effusion, pulmonary embolism, upper gastrointestinal bleeding, pancreatitis, inflammatory bowel disease, ascites, nephrotic syndrome, acute kidney injury, diabetes, hyperthyroidism, leukemia, anemia, systemic lupus erythematosus, rheumatoid arthritis
Surgery	20	Inguinal hernia, appendicitis, gallbladder stones, bile duct stones, stomach cancer, colon cancer, rectal cancer, liver cancer, pancreatic cancer, lung cancer, pneumothorax, pituitary tumor, coronary heart disease, benign prostatic hyperplasia, bladder tumor, acute respiratory distress syndrome, cervical myelopathy disease, lumbar disc herniation, knee osteoarthritis, ankle fracture
Gynecology and obstetrics	15	Ectopic pregnancy, uterine fibroids, ovarian tumors, dysfunctional uterine bleeding, endometrial cancer, cervical cancer, ovarian cancer, hypertension during pregnancy (including gestational hypertension, preeclampsia, eclampsia, chronic hypertension, and chronic hypertension combined with preeclampsia), gestational diabetes or diabetes (impaired glucose tolerance) combined with pregnancy, prenatal hemorrhage (including placenta previa and abruption of the placenta)
Pediatrics	10	Neonatal hyperbilirubinemia, neonatal respiratory distress syndrome, neonatal sepsis, neonatal hypoxic-ischemic encephalopathy, pneumonia, diarrhea, nutritional diseases, nervous system disease, Kawasaki disease, and kidney disease