evidence: The mean stone size in the success and failure groups, respectively, was 5.9±1.27 mm vs. 7.5±1.43 mm in group A (p<0.001) and 12.2±2.15 mm vs. 19.1±4.15 mm in group B (p<0.001).
intervention: Extracorporeal Shock Wave Lithotripsy (ESWL) group B, stone size10 mm - success group
comparator: failure group
outcome: The mean stone size