Table 2.

Median Stone Volume, Total Energy Used, Working Time, and Fragmentation Rate.

	Standard-Treated (n=11)	Moses-Treated (n=23)	P-value	Overall
Total stone volume, median (25%–75%), mm3	422.5 (182.2–875.3)	781.9 (180.7–1691.3)	0.48	560.5 (192–1549.3)
Energy use (kJ), median (25%–75%)	6.4 (2.6–11.9)	4.5 (1.6–16.0)	0.87	4.5 (1.6–12.9)
Laser working time (min), median (25%–75%)	10 (2.5–15.0)	6 (2.8–13.0)	0.46	8 (3–13)
Stone fragmentation rate, volume/working time (25%–75%), mm3/min	58.1 (30.8–102.4)	95.8 (51.5–177.4)	0.19	87.1 (32.4–130.1)

kJ, kilojoule; min, minute