Results
Although 40 patients were enrolled, only 19 and 18 patients in the non-clamp and clamp groups, respectively, were analyzed because of a lack of data (Fig. 
 Research flow. Although 40 patients were enrolled, only 19 and 18 patients in the non-clamp and clamp groups, respectively, were analyzed because of a lack of data
Patient characteristicsMann–Whitney U test
 Changes in number of pads. The number of pads was significantly reduced in the clamp group than in the non-clamp group (-0.83 ± 1.51 vs. -0.16 ± 0.69, P = 0.0071)
Results of the King’s Health QuestionnaireWilcoxon matched-pairs signed rank test