OR 95% C.I. 95% C.I.
Lower Upper p
Preoperative urine culture 2.191 2.191 0.532 9.026 0.278
Stone burden, mm2 1.003 1.003 0.994 1.014 0.494
Stone density, HU 0.999 0.999 0.997 1.001 0.425
Preoperative pelvis urine density 0.848 0.848 0.782 0.919 <0.001
Stone localization Other Lower calyx Multiple calyxes Ref 0.033 1.823 Ref 0.033 1.823 0.002 0.401 0.543 8.286 0.017 0.433
Preoperative hydronephrosis
Grade 0 Ref Ref
Grade I 0.624 0.624 0.148 2.629 0.660
Grade II 18.970 18.970 3.406 105.657 0.001