Table 21. Change of Skin Hydration between Treatment Group and Control Group in Baseline and 3 weeks(1㎝ below the medial aspect of the elbow)

	Descriptives	V2	V3	Difference	p–value
Control Group	n	24	24	24	0.020b
	Mean±SD	26.721±8.879	32.018±7.336	5.297±8.833
	Median	28.517	32.233	1.717
	Min	7.800	13.500	−7.300
	Max	41.267	46.300	24.867
Treatment Group	n	23	23	23	0.003a
	Mean±SD	31.088±11.179	37.991±9.140	6.903±9.923
	Median	29.767	37.100	4.867
	Min	10.333	21.367	−6.000
	Max	54.300	60.367	33.234
p–value		0.144c	0.017c	0.587d

p-value by paired t-test
p-value by Wilcoxon signed rank test
p-value by Independent two-sample t-test
p-value by Mann-Whitney test