TABLE 2.

Comparison of skin elasticity parameter improvement between two groups.

Parameter	Group	1 Month post-treatment	3 Months post-treatment	6 Months post-treatment	12 Months post-treatment
R2 improvement rate (%)	Study group	28.4 ± 4.8	32.7 ± 5.2	29.8 ± 4.9	24.6 ± 4.1
	Control group	18.2 ± 3.9	21.5 ± 4.1	19.3 ± 3.8	15.7 ± 3.2
	t value	10.432	10.847	10.278	11.053
	P value*	<0.001	<0.001	<0.001	<0.001
R5 improvement rate (%)	Study group	24.8 ± 4.2	28.9 ± 4.6	26.3 ± 4.4	21.2 ± 3.8
	Control group	16.1 ± 3.5	18.7 ± 3.9	17.2 ± 3.6	13.8 ± 2.9
	t value	9.756	10.214	9.643	9.987
	P value*	<0.001	<0.001	<0.001	<0.001
R7 improvement rate (%)	Study group	26.5 ± 4.5	30.8 ± 5.1	28.1 ± 4.7	23.4 ± 4.0
	Control group	17.3 ± 3.7	20.1 ± 4.0	18.5 ± 3.7	14.9 ± 3.1
	t value	9.873	10.568	9.892	10.341
	P value*	<0.001	<0.001	<0.001	<0.001

P values corrected by Bonferroni method.