Parameter Stone Free

%

Residual Fragments

%

p Value

Age (yr)

>0.05

<40

126

42.5

15

5

>40

125

42

30

10

Sex

0.252

Males

183

61.8

27

9

Females

68

22.9

18

6

Stone Size Mm

0.000

Up to 10

114

38.5

6

2

10 - 20

124

41.8

31

10.4

>20 mm

13

4.3

7

2.7

Stone Side

0.381

Right

114

38.5

20

6.7

Left

126

42.5

23

7.7

Bi

11

3.7

2

0.6

Localization

Pelvic

103

34

19

6.4

0.005

Calyx

100

33

25

8.4

Ureter

48

16

1

0.3

Stone Radiology

Opaque

199

67.2

36

12.1

0.82

Non Opaque

52

17.5

9

3

JJ stent

NO

230

77.7

42

14

0.006

Yes

21

7

3

2

Renal Surgery for Stone

0.406

No

226

76

37

12

Yes

25

8

8

2.7

No. of Shock Waves

0.0

3000

86

8

3000 - 6000

93

13

6000 - 9000

47

11

>9000

13

Renal System State

0.554

Perfect

158

53.3

30

10

Hydronephrotic

93

31.4

15

5

Lithotripter

Siemens

153

51.6

31

10.4

0.3

Storz SLX F-2

98

33%

14

4.7