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Table 2 Analysis of intra-operative 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)

Patients count(123)

40

 

45

 

34

 

4

  

Operative time(min) Median(range)

46 (41–213)

 

53 (41–220)

 

61 (42–215)

 

45 (43–55)

 

0.034

Fluoroscopy time(minutes) Median(range)

5 (3.8–20)

 

5.30 (4.30–20)

 

9 (5.8–17)

 

12 (6–13)

 

0.0001

Number of access

0.134

 1 (86)

31

77.5‬

31

68.9

20

58.8

4

100

 

 2 (17)

7

17.5‬

4

8.8

6

17.7

0

0

 

 3 (20)

2

5

10

22.3

8

23.5

0

0

 

Access site

0.066

 Multiple (21)

4

10

5

11.1

11

32.4

1

25

 

 Upper calyces (2)

1

2.5

0

0

1

.95

0

0

 

 Middle calyces (13)

2

5

8

17.8

3

8.8

0

0

 

 Lower calyces (87)

33

82.5

32

71.1

19

55.9

3

75

 
  1. P < 0.05 are in italics