a. Variable(s) entered on step: Preoperative urine culture, Stone burden, Stone density, Preoperative pelvis urine density, Stone localization, Preoperative hydronephrosis
Figure 1. Bacteriological analysis of preoperative urine and intraoperative pelvis culture
Figure 2: Receiver operating characteristic (ROC) curve plot of pelvis urine density in predicting pelvis culture positivity (AUC: 0.858)