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Table 1 Patient demographics and comparison of outcomes between 2 groups

From: Flexible Ureterorenoscopy versus Extracorporeal Shock Wave Lithotripsy for the treatment of upper/middle calyx kidney stones of 10–20 mm: a retrospective analysis of 174 patients

Variables	ESWL (n = 108)	F-URS (n = 66)	P
Mean patient age	39.47 ± 9.80	40.74 ± 1.12	0.434
Sex			0.636
Female	51	33
Male	57	33
Stone size(mm)	12.89 ± 2.54	13.31 ± 2.63	0.299
BMI	26.9 ± 0.72	27.06 ± 0.93	0.326
Success rate	87.04% (n = 94)	92.42% (n = 61)	0.270
Retreatment	12.9% (n = 14)	7.5% (n = 5)	0.270
Clavien Grade
1	n = 7	n = 5	0.783
2	n = 11	n = 7	0.930
3
A
B	0	n = 3	0.026
4	0	0
5	0	0

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