Table 4 Factors associated with SF-12v2 at baseline by multiple linear regressions

Socio-demographics

Male (vs. Female)

4.70

(-4.69,14.08)

0.325

9.93

(2.00,17.85)

0.014*

−1.48

(-7.94,4.97)

0.651

7.55

(4.40,10.70)

< 0.001*

−0.17

(-3.06,2.73)

0.910

Age

−0.11

(-0.50,0.28)

0.587

−0.11

(-0.44,0.22)

0.508

−0.09

(-0.35,0.18)

0.527

−0.04

(-0.17,0.09)

0.517

−0.07

(-0.19,0.05)

0.240

Educational level (No fomal education)

Primary

0.17

(-17.37,17.70)

0.985

−4.67

(-19.48,10.13)

0.534

3.84

(-8.22,15.89)

0.531

−0.63

(-6.52,5.25)

0.832

0.77

(-4.63,6.18)

0.778

Secondary

−8.66

(-26.05,8.74)

0.328

−12.90

(-27.59,1.78)

0.085

2.69

(-9.27,14.65)

0.658

−1.82

(-7.66,4.02)

0.539

−2.03

(-7.40,3.33)

0.455

Tertiary

−5.60

(-26.83,15.63)

0.603

−6.50

(-24.42,11.43)

0.475

6.28

(-8.32,20.87)

0.397

−2.46

(-9.59,4.66)

0.496

1.18

(-5.37,7.72)

0.724

Married (vs. Unmarried)

1.47

(-7.63,10.57)

0.751

2.25

(-5.44,9.93)

0.565

−1.71

(-7.97,4.54)

0.590

1.87

(-1.19,4.92)

0.229

1.34

(-1.46,4.15)

0.347

Smoker (vs. Non-smoker)

15.42

(-3.95,34.78)

0.118

4.72

(-11.62,21.07)

0.569

10.22

(-3.09,23.53)

0.132

−7.27

(-13.76,-0.77)

0.029*

6.64

(0.67,12.62)

0.029*

Working (vs. Not working)

11.30

(0.06,22.54)

0.049*

11.17

(1.68,20.66)

0.021*

1.84

(-5.88,9.57)

0.638

4.60

(0.83,8.37)

0.017*

2.15

(-1.32,5.61)

0.223

CBHD, Yes (vs. No)

2.71

(-5.77,11.19)

0.530

8.54

(1.39,15.70)

0.020*

1.62

(-4.21,7.44)

0.585

4.77

(1.93,7.62)

0.001*

2.46

(-0.15,5.08)

0.065

Come alone/ accompanied for HD session, Accompanied by others (vs. Alone)

−5.64

(-18.74,7.47)

0.397

−1.79

(-12.85,9.28)

0.750

−2.89

(-11.90,6.12)

0.528

−3.34

(-7.74,1.05)

0.135

0.98

(-3.06,5.02)

0.633

Transportation to dialysis center (vs. Walk)

Public transport

−13.18

(-28.82,2.47)

0.098

3.50

(-9.71,16.71)

0.602

−2.30

(-13.06,8.46)

0.674

0.66

(-4.59,5.91)

0.804

−0.21

(-5.03,4.61)

0.931

Taxi/ others

−11.47

(-29.77,6.83)

0.218

8.25

(-7.20,23.70)

0.294

−2.80

(-15.38,9.79)

0.661

−1.39

(-7.53,4.75)

0.655

0.09

(-5.56,5.73)

0.976

Clinical and Co-morbidity information

Kt/V,Target^a achieved (vs. Target^a not achieved)

−3.77

(-13.06,5.53)

0.425

1.18

(-6.67,9.02)

0.768

−4.33

(-10.72,2.06)

0.183

−0.42

(-3.54,2.69)

0.789

−0.43

(-3.30,2.43)

0.766

Blood haemogloblin, ≥ 9 g/dL (vs. < 9 g/dL)

−5.06

(-14.94,4.83)

0.314

−2.74

(-11.08,5.61)

0.518

−0.80

(-7.60,5.99)

0.816

0.86

(-2.46,4.18)

0.609

−0.09

(-3.14,2.96)

0.954

Comorbidities, Yes (vs. No)

2.32

(-7.74,12.39)

0.649

−3.51

(-12.00,4.99)

0.416

−0.15

(-7.07,6.77)

0.965

−0.30

(-3.68,3.07)

0.860

1.91

(-1.19,5.02)

0.225

Constant

98.58

(63.47,133.69)

< 0.001*

79.74

(50.10,109.39)

< 0.001*

83.43

(59.29,107.57)

< 0.001*

38.35

(26.57,50.13)

< 0.001*

55.58

(44.75,66.41)

< 0.001*