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Table 3 Patients and Stones Demographics for 51 patients with proximal ureteric stones exposed to ureteroscopic Ho:YAG laser lithotripsy classified as small (<10 mm) and large (>10 mm) stones

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

Patient and stone demographics
  Proximal ≤ 10 mm (n = 31) Proximal > 10 mm (n = 20) P value
Gender (n)    0.839
Male 24 (77.4) 16 (80)
Female 7 (22.6) 4 (20)
Age (years) 53.1 ± 2.2 55.3 ± 3.0 0.549
Mean stone diameter (mm)* 7.4 ± 0.3 15.8 ± 1.1 <0.001
Mean stone burden (mm2)* 45.2 ± 3.9 212.0 ± 34.0 <0.001
No of patients with multiple stone burden (%) 2 (6.5) 1 (5) 0.850
No. of patients with prior treatments (%) 11 (35.5) 9 (45) 0.508
No. of patients with preoperative double-J stents (%) 12 (38.7) 7 (35) 0.800
  1. *mean +/- SD.