Table 2.

Comparison of VAS scores between the two groups ($\overline{x}\pm s$, points).

Group	N	Before treatment	2 weeks after treatment	4 weeks after treatment	8 weeks after treatment
C group	65	7.48 ± 0.24	5.63 ± 0.53	3.86 ± 1.23	2.84 ± 0.64
R group	65	7.41 ± 0.44	4.66 ± 1.34	2.46 ± 0.31	1.22 ± 0.12
t		1.126	5.427	8.898	20.058
P		0.262	<0.001	<0.001	<0.001