Table 3.

Multivariate analysis of risk factors for massive hemorrhage after PCNL.

	β	SE	Waldχ2	P	OR	95% CI
Number of accesses	−1.694	0.973	3.029	0.082	0.184	0.027∼1.238
Urinary tract infection	2.417	0.707	11.683	0.001	11.214	2.804∼44.842
Diabetes	−0.351	1.118	0.098	0.754	0.704	0.079∼6.298
Hypertension	1.738	0.715	5.911	0.015	5.686	1.401∼23.083
Hydronephrosis	−1.668	0.686	5.907	0.015	0.189	0.049∼0.724
Glomerular filtration rate (GFR)	0.024	0.019	1.498	0.221	1.024	0.986∼1.603