Table 4.

Comparison of Outcomes according to the Maximum Stone Size

Clinical outcome	Stone size <1 cm	Stone size ≥1 cm	Overall
Overall success after first-line procedure	5/8 (62.5)	9/26 (34.6)	14/34 (41.2)
Need of mechanical lithotripsy*	3/5 (60.0)	6/9 (66.7)	9/14 (64.3)
Conversion to second-line procedure	3/8 (37.5)	17/26 (65.4)	20/34 (58.8)
Overall complications	0/8	4/26 (15.4)	4/34 (11.8)

Data are presented as number (%).

^*Use of mechanical lithotripsy in cases of success after the first-line procedure.