International Journal of Photoenergy / 2012 / Article / Fig 7

Research Article

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

Figure 7

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