International Journal of Photoenergy / 2012 / Article / Fig 3

Research Article

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

Figure 3

The average abdominal temperatures before and after treatment. Expression values are the mean and standard deviation, and the statistical difference was analyzed by Wilcoxon signed-rank test. Double asterisk mean that this group was highly significantly different from control group ( ).