Skip to main content

Table 1 Patient characteristics

From: Correlation between the operation time using two different power settings of a Ho: YAG laser: laser power doesn’t influence lithotripsy time

Variables

Number (%) or Median (mean ±SD)

P

30 W

100 W

value

No. of Pts.

31

25

 

Median age (yr)

70 (68.8 ± 16.5)

69 (68.4 ± 12.9)

n.s.

Gender

   

 Male (%)

23 (74.2%)

22 (88.0%)

n.s.

 Female (%)

8 (25.8%)

3 (12.0%)

Stone burden (mm)

25 (34.9 ± 29.6)

32 (41.3 ± 31.3)

n.s.

Maximum stone’s diameter (mm)

15 (17.9 ± 9.3)

20 (22.4 ± 10.1)

0.09

No. of stones

2 (3.2 ± 3.5)

1 (2.0 ±1.7)

n.s.

 Solitary

15 (48.4%)

14 (56.0%)

n.s.

 2

7 (22.6%)

6 (24.0%)

 3 or more

9 (29.0%)

5 (20.0%)

Mean CT density of maximum stone’s center area (HU)

981.5 (995.7 ± 394.4)

902 (915.6 ± 297.3)

n.s.

  1. n.s.: not significant.