Table 1 Comparison of the general data between the two groups

Number of patients

31

29

Number of kidneys

52

49

Bilateral VUR / unilateral VUR

21/10

20/9

0.919

Age (month)

10 [9, 11]

10 [8.5, 11]

0.706

Males / Female

17/14

17/12

0.768

Weight (kg)

9.5 [8.6, 10.4]

9.8 [8.6, 10.5]

0.636

Grade of VUR

Grade V

3

5

0.704

Grade IV

23

20

Grade III

26

24

Grade II

0

0

Glomerular filtration rate (%)

50 [43, 59.7]

50 [45, 56.5]

0.634

Renal atrophy

5

3

0.516

Degree of renal scar

Level 0

45

41

0.856

Level 1

3

2

Level 2

1

2

Level 3

3

4

Anteroposterior diameter of hydronephrosis

0.6 [0.3, 1]

0.5 [0.35, 1.1]

0.835

KIM-1 before operation (ng/mg)

271.2 [248.1, 297.8]

271 [253.2, 299.8]

0.403

MCP-1 before operation (pg/mg)

235.7 [211.0, 256.4]

246.8 [208.4, 284]

0.296