Table 1 Comparison of demographic data between the dialysis and non-dialysis groups

Age [mean ± SD (range)]

62.4 ± 8 (44–75)

59.4 ± 6.5 (48–67)

0.28

BMI

23.86 ± 3.77

23.91 ± 3.94

0.97

 Single-level

14

6

0.72

 Multi-level

15

4

 Cervical

4

0

0.55

 Lumbar

25

10

 Diabetes mellitus

12

2

0.27

 Hypertension

26

6

0.06

 Serum ALP

142.2 ± 73.09

102.4 ± 35.8

0.11

 Serum Ca

10.1 ± 0.86

9.7 ± 0.56

0.18

 Serum P

4.65 ± 2.01

3.86 ± 0.14

0.23

Dialysis duration (months)

82.5 ± 44.3

–

–

Dialysis adequacy (Kt/V)

1.58 ± 0.19

–

–