Table 1 The effect of multiplicity, laterality, stone length and gender on stone free rate, operative time, extravasation and hematuria.

Total

Single

236

Multiple

31

Rt

159

Lt

108

<15

187

≥ 15

80

Male

218

Female

49

Stone free rate

91% (n = 243)

215

28

(p = 0.85)*

143

100 (p = 0.46)*

167

76

(p = 0.21)*

196

47

(p = 0.27)*

Operative time (minutes)

Mean 55

54.1 ± 6.1

55.9 ± 6.5

(p = 0.13)*

54.6 ± 5.1

55.6 ± 5.5

(p = 0.13)*

54.1 ± 5.1

55.9 ± 5.5

(p = 0.01)^$

55.8 ±5.9

54 ± 6.1

(p = 0.07)*

Extravasation

6.7% (n = 18)

15

3

(p = 0.45)*

10

8

(p = 0.72)*

12

6

(p = 0.75)*

16

2

(p = 0.54)*

Hematuria

18.4% (n = 49)

43

6

(p = 0.88)*

34

15

(p = 0.12)*

38

11

(p = 0.2)*

41

8

(p = 0.69)*