Table 3 Univariate analysis of preoperative factors in relation to the outcome of pyeloplasty

Age

0.09

 • Below one year

19

1

 • Above one year

23

3

Sex

0.11

 • Male

33

3

 • Female

9

1

Side

0.34

 • Left

19

2

 • Right

23

2

Parenchymal thickness

0.19

 • ≤ 5 mm

20

3

 • > 5 mm

22

1

Preoperative SRF

0.71

 • ≤ 10%

19

2

 • 11–19%

23

2

Clinical presentation

0.28

 • Antenatal diagnosis

13

1

 • Abdominal pain

9

1

 • Incidental occurrence

8

1

 • Palpable mass

5

1

 • UTI

7

0

SFU grade of hydronephrosis: n (%)

0.18

 • Grade 3

8

1

 • Grade 4

34

3