0 = male
1 = female

0 = without smoking
1 = with smoking

0 = without drinking
1 = with drinking

Primary disease
0 = Chronic glomerulonephritis
1 = Chronic nephrotic syndrome
2 = Hypertensive nephropathy
3 = Diabetic nephropathy
4 = Others

CKD stages
3 = CKD stage 3
4 = CKD stage 4
5 = CKD stage 5
6 = CKD stage 5d

Dialysis modality
0 = No dialysis
1 = Hemodialysis
2 = Peritoneal dialysis

0 = without hypertension
1 = hypertension

Diabetes mellitus
0 = without diabetes mellitus
1 = diabetes mellitus

Calcium channel blocker
0 = do not take calcium channel blocker
1 = take calcium channel blocker

β-blocke
0 = do not take β-blocke
1 = take β-blocke

Angiotensin-aldosterone antagonists
0 = do not take Angiotensin-aldosterone antagonists
1 = take Angiotensin-aldosterone antagonists

0 = do not take insulin
1 = take insulin

Recombinant Human Erythropoietin Injection
0 = do not take Recombinant Human Erythropoietin Injection
1 = take Recombinant Human Erythropoietin Injection

Levocarnitine Injection
0 = do not take levocarnitine
1 = take levocarnitine