Comparison of Outcomes between Two Methods to Extract Stone Fragments during Flexible Ureteroscopic Lithotripsy

Table 2

Multivariate logistic regression analysis of risk factors for residual fragments after fURSL ( = 196).

		Multivariate
		P	OR	95% CI
Number of stones	1	0.943	0.943	0.349–2.549
	≥2		1
Number of involved calices	1	0.212	0.495	0.164–1.495
	≥2		1
Stone volume (mm^3)	<247	0.196	0.537	0.209–1.379
	≥247		1
Cumulative stone diameter (mm)	<12.95	0.448	0.656	0.221–1.951
	≥12.95		1
Lower pole calculi	absent	0.524	0.749	0.307–1.824
	present		1
Extracting method	AE	<0.001	9.133	3.736–22.322
	SE		1

AE: assistant extraction; SE: surgeon extraction; significant.