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Table 1 Baseline patients characteristics

From: Laser lithotripsy using dusting technique (low energy, high frequency) for symptomatic upper urinary tract stones

Total patients n = 60  
Mean age ± SD (range) 50.50 ± 13.87 (22–79) years
Gender
 Male; number (%) 20 (33.33)
 Female; number (%) 40 (66.67)
Mean BMI ± SD (range) 28.21 ± 3.84 (20–35)
ASA score
 I; number (%) 28 (46.67)
 II; number (%) 32 (53.33)
 History of previous surgery; number (%) 15 (25%)
Degree of HUN; number (%)
 Mild 29 (48.33)
 Moderate 26 (43.33)
 Severe 5 (8.33)
Site of the stone; number (%)
 Ureter 43 (71.67)
 Pelvic 10 (16.67)
 Calyceal 2 (3.33)
 Pelvicalyceal 5 (8.33)
Number of stones; number (%)
 Single 50 (83.33)
 Multiple 10 (16.67)
Mean stone size ± SD (range) in cm 1.55 ± 0.55 (0.5–3)
Mean HFU ± SD (range) 794.22 ± 296.63 (290–1800)
Mean creatinine level ± SD (range) 1.38 ± 1.39 (0.5–7)