[Retracted] Factors Affecting Transfusion during Percutaneous Nephrolithotomy: A Retrospective Study of 665 Cases

Table 4

Stone factors according to transfusion.

Parameters	Transfusion (+) %	Transfusion (-) %	value
	23	642
Side			0.107^a
Left	65.2 (15)	48.1 (309)
Right	34.8 (8)	51.9 (333)
Stone size	692.3 (40-2050 mm^2)	708.5 (35-2980 mm^2)	0.288^a
<400mm^2	47.8 (11)	32.4 (208)
400-1000 mm^2	34.8 (8)	41.7 (268)
>1000m^2	17.4 (4)	25.9 (166)
Stone type			0.066^b
Staghorn calculi	30.4 (7)	14.5 (93)
Nonstaghorn calculi	69.6 (16)	85.5 (549)

^aChi-square test. ^bFisher’s exact test.