Table 3 Factors associated with SF-12v2 at baseline by multiple linear regressions

Socio-demographics

Male (vs. Female)

16.22

(7.26,25.17)

< 0.001*

8.00

(-1.98,17.98)

0.116

14.85

(4.91,24.79)

0.004*

3.30

(-4.71,11.32)

0.417

1.78

(-6.01,9.57)

0.653

Age

0.09

(-0.28,0.46)

0.624

0.05

(-0.37,0.46)

0.819

−0.07

(-0.48,0.35)

0.750

−0.08

(-0.41,0.25)

0.641

0.27

(-0.06,0.59)

0.105

Educational level (No formal education)

Primary

2.66

(-14.07,19.38)

0.755

6.94

(-11.70,25.59)

0.464

−9.33

(-27.90,9.24)

0.323

8.47

(-6.51,23.44)

0.266

−1.23

(-15.79,13.32)

0.867

Secondary

−2.32

(-18.91,14.28)

0.783

−5.00

(-23.49,13.50)

0.595

−8.30

(-26.72,10.13)

0.375

1.76

(-13.09,16.62)

0.815

−3.50

(-17.93,10.94)

0.633

Tertiary

5.20

(-15.05,25.44)

0.613

−5.26

(-27.83,17.31)

0.646

−3.39

(-25.87,19.09)

0.766

−2.78

(-20.91,15.35)

0.763

−0.74

(-18.36,16.88)

0.934

Married (vs. Unmarried)

0.51

(-8.17,9.19)

0.908

4.57

(-5.10,14.25)

0.353

−3.47

(-13.11,6.17)

0.479

7.37

(-0.40,15.14)

0.063

2.91

(-4.65,10.46)

0.449

Smoker (vs. Non-smoker)

−12.80

(-31.27,5.66)

0.173

−3.70

(-24.29,16.88)

0.723

−7.79

(-28.29,12.72)

0.455

−4.50

(-21.03,12.03)

0.592

−1.99

(-18.06,14.08)

0.807

Working (vs. Not working)

17.49

(6.77,28.21)

0.002*

16.42

(4.47,28.37)

0.007*

3.54

(-8.36,15.44)

0.558

12.14

(2.54,21.73)

0.013*

11.84

(2.51,21.17)

0.013*

CBHD, Yes (vs. No)

11.31

(3.22,19.40)

0.006*

2.73

(-6.28,11.75)

0.551

12.33

(3.35,21.31)

0.007*

7.59

(0.35,14.83)

0.040*

−2.52

(-9.55,4.52)

0.481

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

−21.26

(-33.76,-8.76)

0.001*

−2.16

(-16.09,11.78)

0.760

7.84

(-6.04,21.72)

0.267

−2.64

(-13.83,8.55)

0.642

−4.27

(-15.15,6.61)

0.440

Transportation to dialysis center (vs. Walk)

Public transport

−3.18

(-18.10,11.74)

0.675

−2.34

(-18.97,14.29)

0.782

12.09

(-4.48,28.66)

0.152

−6.73

(-20.08,6.63)

0.322

−0.43

(-13.41,12.56)

0.949

Taxi/ others

−4.75

(-22.20,12.71)

0.592

−3.25

(-22.71,16.21)

0.742

10.26

(-9.12,29.64)

0.298

−10.22

(-25.85,5.41)

0.199

2.63

(-12.56,17.82)

0.733

Clinical and Co-morbidity information

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

−6.85

(-15.72,2.02)

0.129

1.11

(-8.77,10.99)

0.825

−1.37

(-11.22,8.47)

0.784

0.83

(-7.10,8.77)

0.836

−0.72

(-8.44,6.99)

0.854

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

−0.91

(-10.34,8.51)

0.848

1.17

(-9.34,11.68)

0.826

−3.24

(-13.71,7.23)

0.542

−3.69

(-12.13,4.75)

0.390

1.01

(-7.19,9.22)

0.808

Comorbidities, Yes (vs. No)

−5.05

(-14.65,4.55)

0.301

−3.80

(-14.50,6.90)

0.485

4.06

(-6.60,14.72)

0.454

1.38

(-7.21,9.97)

0.752

−3.77

(-12.12,4.58)

0.375

Constant

60.62

(27.13,94.11)

< 0.001*

61.42

(24.09,98.75)

0.001*

56.80

(19.62,93.99)

0.003*

34.70

(4.72,64.68)

0.024*

43.54

(14.41,72.68)

0.004*