| Feature category | Feature number | details |
| Demographic | 4 | AGE, HISPANIC, RACE, SEX |
| Vital | 8 | HEIGHT, WEIGHT, BODY MASS INDEX, SMOKING, TOBACCO, TOBACCO TYPE, SYSTOLIC BLOOD PRESSURE, DIASTOLIC BLOOD PRESSURE |
| Lab Test | 812 | Measurement values of 812 laboratory measurement indicators |
| Comorbidity | 280 | Complications based on CDM classification and coding standards |
| Procedure | 15,335 | Types of surgery based on CDM classification and coding standards |
| Medication | 11,539 | Drugs used before and during hospitalization |