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Table 1 Patient demographics and stone characteristics

From: Comparison of ultrasound-assisted and pure fluoroscopy-guided extracorporeal shockwave lithotripsy for renal stones

Characteristic USa FS p value
Number of patients 209 216  
Patient age (mean ± SD) 53.3 ± 13.2 53.8 ± 12.4 0.568
Patient gender    0.016
 Male, n (%) 130 (62.2%) 158 (73.1%)  
 Female, n (%) 79 (37.8%) 58 (26.8%)  
Stone size (cm) 1.03 ± 0.37 0.87 ± 0.33 0.008
 > 1 cm (n) 111 73  
 < 1 cm (n) 98 143