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Table 1 Patients’ and stones’ characteristics: proximal versus distal ureteral calculi in 88 patients treated with ureteroscopic Ho:YAG laser lithotripsy

From: Efficacy and safety of Ho:YAG Laser Lithotripsy for ureteroscopic removal of proximal and distal ureteral calculi

Patients’ characteristics
Number of patients Proximal stones 51 Distal stones 37 P value
Gender:    
male/female 40/11 23/14
Age (years)* 53.9 ± 1.8 53.3 ± 3.0 0.829
Stone diameter (mm)* 10.7 ± 0.7 8.2 ± 0.6 0.020
Stone burden (mm2) 110.7 ± 17.6 64.4 ± 11.6 0.010
Number of patients with multiple stone burden (%) 3 (5.9) 5 (13.5) 0.225
Number of patients with prior treatments (%) 20 (39.2) 15 (40) 0.905
Number of patients with preoperative double-J stents (%) 19 (37.3) 6 (16.2) 0.032
  1. *mean +/- SD.