Ghaed et al. 15 Figure 1. The flowchart of study participants. Table 1. Comparison of the pain score of patients at baseline, 2 and 4 weeks. Variable N Baseline Tamsulosin Cystone Tamsulosin & cystone Placebo 2 Weeks Tamsulosin Cystone Tamsulosin & cystone Placebo 4 Weeks Tamsulosin Cystone Tamsulosin & cystone Placebo SD: standard deviation. 32 35 37 24 32 35 37 24 32 35 37 24 Mean 6.34 5.49 5.43 6.25 8.81 8.40 8.81 9.83 7.44 6.74 7.24 9.75 SD 1.771 1.755 1.923 1.359 1.378 1.193 1.411 0.381 1.134 1.172 1.498 0.442 P value 0.064 <0.001 <0.001