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Table 1 Comparison of demographic and stone-related factors in the three study groups

From: Is an excretory urogram mandatory in patients with small to medium-sized renal and ureteric stones treated by extra corporeal shock wave lithotripsy?

  IVU (N) UHCT (N) US + X-Ray KUB (N) Pvalue
Age 38.2 37.9 39.9 0.9
Gender: men/women 40/10 35/15 26/7 0.46
Location of stone:     
   Upper pole 9 8 5  
   Lower pole 5 11 6  
   UPJ 11 8 11 0.86
   Ureter 25 23 11  
Single stone (%) 37 38 24 0.94
Size of stone (mean) (mm) 11 9 11 0.13
Stone size:     
   < 10 mm 32 42 24 0.65
   11–20 mm 14 7 7 0.87
   > 20 mm 4 1 2 0.63
  1. KUB = kidney, ureter and bladder; UHCT = non-contrast enhanced helical computed tomography; UPJ = ureteropelvic junction; US = ultrasound; IVU = intravenous urogram.