International Journal of Photoenergy / 2012 / Article / Fig 6

Research Article

Inhibitory Effects of Far-Infrared Ray-Emitting Belts on Primary Dysmenorrhea

Figure 6

The VRS scores before and after treatment. Expression values are the mean and standard deviation, and the statistical difference was detected by Wilcoxon Signed-Rank Test. Asterisk means that this group has statistical difference with control group ( ).