Table 4.

Scores of ODI and VAS and corresponding improved rates for the three groups 6 months after treatment, as well as comparing with the results in Table 3.

	Group A	Group B	Group C
Number	50	31	48
ODI	8.5 ± 2.0	7.8 ± 2.8	11.3 ± 2.6
ODI improvement rate (%)	4.5	16.1	4.2
P	0.130	0.037∗	0.178
VAS	2.3 ± 0.8	2.5 ± 1.2	3.2 ± 0.9
VAS improvement rate (%)	4.2	13.8	5.9
P	0.097	0.026∗	0.082

^∗Statistically significant.