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Table 3 Successful stone disintegration rate (SSDR) of each treatment the groups

From: A clinical observational study of effectiveness of a solid coupling medium in extracorporeal shock wave lithotripsy

   ≤ 4 mm  > 4 mm Total X2 p-value
n % n %
Group C 57 55.3 46 44.7 103 6.872 .009
Group P1 73 73.0 27 27.0 100
   ≤ 4 mm  > 4 mm Total X2 P
n % n %
Group P1 73 73.0 27 27.0 100 .001 .975
Group P2 71 73.2 26 26.8 97
  1. Comparison performed by Chi-square test