Skip to main content

Table 1 Analysis of preoperative variables

From: Impact of weight on stone-free rate during percutaneous nephrolithotomy

 

Group 1

(%)

Group 2

(%)

Group 3

(%)

Group 4

(%)

P-value

average (< 25)

Overweight (25–29.9)

Obese (30–39.9)

Morbid obese (> 40)

Count (123)

40

32.5

45

36.6

34

27.6

4

3.3

 

Gender, %

0.0001

Male (71)

29

72.5

34

75.5

8

23.5

0

0

Female (52)

11

‬27.5‬

11

24.5

26

76.5

4

100

Age (mean ± SD)

39.07 ± 13.94

 

44.04 ± 9.71

 

48.17 ± 9.18

 

52.50 ± 1.73

 

0.005

Body Mass Index (kg/m2) median(range)

23.8 (21.7–29.4)

 

27.7 (25–29.7)

 

33.4 (30–38.8)

 

42.1 (40.5–43.7)

 

0.0001

Comorbidity

0.224

 HTN (9)

3

7.5

2

4.45

2

5.88

2

50

 DM (6)

2

5

4

8.89

0

0

0

0

 HTN + DM (7)

0

0

2

4.45

5

14.7

0

0

(mean ± SD)

2.1 ± .12

 

2.4 ± .4

 

2.3 ± .15

 

2.4 ± .34

 

0.378

Stones Localization

0.184

 1 OR 2 Calyces (86)

30

75

32

71.2

20

58.8

4

100

 Multiple calyces (18)

8

20

4

8.8

6

17.6

0

0

 Stag horn (19)

2

5

9

20

8

23.5

0

0

Side

0.001

 Left (64)

15

37.5

19

42.3

28

82.3

2

50

 Right (59)

25

62.5‬

26

57.7

6

17.7

2

50

Hydronephrosis

0.146

 (None, mild) (82)

28

70

25

55.5

25

73.5

4

100

 (Moderate, Severe) (41)

12

30

20

44.5

9

26.5

0

0

Essence’ (HU)

        

0.020

 Non- opaque(43)

21

52.5

12

26.6

8

23.5

2

50

 Opaque(80)

19

‬47.5‬

33

73.4

26

76.5

2

50

  1. P < 0.05 are in italics