Table 6. Comparison between the studied cases according to the stone-free rate.

URS: ureteroscopy, PCNL: percutaneous nephrolithotripsy

Variables	Group 1 (n = 35)		Group 2 (n = 35)		Test of Sig.	P-value
	No.	%	No.	%
Stone-free rate	32	91.4	33	94.3	0.215	0.643
Efficiency quotient	91.4100 + 2.9 + 5.7 =0.84		94.3100 + 0 + 5.7 = 0.89		0.001	0.975
Retreatment	1	2.9	0	0.0	1.014	0.316
Auxiliary procedure	2	5.7	2	5.7	0.0	1.0
Flexible URS	2	5.7	1	2.9	0.348	0.555
Mini PCNL	0	0.0	1	2.9	1.014	0.316