Table 2. Comparison of perioperative surgical outcomes between groups A and B.

Surgical outcome	Group A (n=172)	Group B (n=76)	p-value
Success rate	153 (89.0)	66 (86.8)	0.670
Operation time (min)	82.5±2.5	82.1±2.1	0.931
Overall complication rate	19 (11.0)	8 (10.5)	0.657
Urinary tract infection	11 (6.4)	2 (2.6)	0.355
Gross hematuria	3 (2.6)	2 (1.7)	0.486
De novo hydronephrosis	5 (2.9)	4 (5.3)	0.462

Values are presented as number (%) or mean±standard deviation.

Group A, active stone removal group; group B, fragmentation-only group.