Table 1 Description of Clinical variables

Demographics

8

Sex, Age, Ethnic, Work, Marital status, Address, Physical condition of mother, Physical condition of father

Hospitalization information

5

Length of stay, The month of discharge, Payment Method, Admission condition, Admission pathway

Medical history

5

History of infection, History of trauma, History of surgery, History of allergy, History of blood transfusion

Past hospitalization history

5

Frequency of hospitalizations in the past 1 week, Frequency of hospitalizations in the past 1 month, Frequency of hospitalizations in the past 3 months, Frequency of hospitalizations in the past 6 months, Frequency of hospitalizations in the past 1 year

Comorbidities (ICD-10)

25

e.g., Hypertensive diseases (I10-I15), Diabetes mellitus (E10-E14), Renal failure (N17-N19), Malignant neoplasms (C00-C97), Diseases of liver (K70-K77), The total number of comorbidities

Physical examinations

14

e.g., Heart rate, Respiratory rate, Body temperature, Pulse, Edema, Cardiac Murmurs

Procedures (ICD-9-CM-3)

11

e.g., Procedures on blood vessels (00.6), Angiocardiography using constrast material (88.5), Intravascular imaging of blood vessels (00.2), Puncture of vessel (38.9)

Cost information

17

e.g., Total expenses, Treatment expenses, Western medicine expenses, Bed expenses, Board expenses, Surgery expenses

Ultrasonic examinations

19

e.g., Ejection Fraction, Interventricular septal thickness, Stroke volume

Laboratory tests

168

e.g., Calcium max, Calcium min, Calcium median, Hemoglobin max, Hemoglobin min, Hemoglobin median

Medications

16

e.g., β-receptor blocker, Calcium channel blockers, Angiotensin converting enzyme inhibitors, Angiotensin receptor blocks, Statins, Diuretic