Table 2.

Postoperative findings

	Robotic	Open	p-value
Success (%)	94 (49/52)	100 (40/40)
Total complications*	18	6	0.09
Type I	6	2
Type II	1	0
Type IIIb	11	4
Revision pyeloplasty**	3	0
Grade of hydronephrosis			0.38
0	3	3
I	15	14
II	20	15
III	13	7
IV	1	1

^*Fourteen patients and six patients experienced complications in RALP and OPN, respectively. Hazard ratio = 2.29

^**Already counted as type IIIb; no additional complications