Table 4 Predicting Karnofsky score level at each in-person visit using the logistic regression model including selected interaction

Intercept

2.54

6.89

Age

0.20

0.07

Gender (female as Ref.)

0.25

0.14

DM

0.09

0.32

Primary disease subclass (P_A as Ref.)

− 6.18

1.12

Use of vitamin D

− 0.24

0.14

Anti-hypertensive agent

− 0.35

0.11

Use of iron

− 0.17

0.17

Parathyroidectomy

0.05

0.18

Treatment of year

− 0.02

0.12

The number of times per week

− 0.52

0.18

Each dialysis time

− 0.54

0.21

Dialyzer surface area

− 0.93

0.23

Hb

− 0.96

0.24

Hct

0.32

0.06

WBC

− 0.01

0.03

Albumin

2.14

1.62

BUN

0.01

4.32E−03

Creatinine

− 0.01

0.38

Ca

0.04

0.07

P

0.27

0.35

Na

− 0.04

0.02

K

− 0.42

0.08

Glucose

2.29E−03

9.69E−04

AST

− 0.02

0.01

Alkaline P

2.26E−03

1.70E−03

Cholesterol

1.07E−03

1.48E−03

Triglyceride

5.89E−04

6.61E−04

Uric acid

− 0.05

0.04

Ferritin

8.62E−04

1.64E−03

Al

− 0.02

0.06

iPTH

− 8.04E−04

1.46E−03

Kt/V

− 0.75

0.23

nPCR

0.29

0.24

Ultrafiltration dehydration amount

0.08

0.05

Cardiothoracic ratio

− 0.10

1.07

Age × albumin

− 0.04

0.02

Primary disease subclass × age

0.06

0.01

Primary disease subclass × creatinine

0.15

0.05

Albumin × creatinine

− 0.07

0.08

Creatinine × age

1.41E−03

2.85E−03

Creatinine × treatment of year

− 0.02

0.01

Age × iPTH

− 1.18E−05

1.63E−05

iPTH × cardiothoracic ratio

3.53E−03

2.29E−03

Treatment of year × age

− 2.36E−03

1.15E−03

Age × ferritin

− 1.23E−05

2.07E−05

Ferritin × P

7.21E−05

1.38E−04

P × Hb

− 0.02

0.03

Hb × treatment of year

0.03

0.01