Table 2

- Comparison of VAS Scores in the 3 groups before and after treatment.

Groups	Cases	Before treatment	At 1 day after treatment	At 3 months after treatment	At 6 months after treatment
I	24	7.3±0.9	2.5±1.1*,^†	1.8±1.2*,^†,††	1.3±1.3*,^{†,††,‡}
II	22	7.0±0.9	2.8±1.0*,^†	3.2±0.9,*,^†	3.1±0.9,*,^†
III	21	6.9±0.7	4.7±0.7^†	4.5±0.5^†	4.6±0.6^†

*- p<0.05, compared with group III at the same time point; ** - p<0.05, compared with group I at the same time point; † - indicates the comparison within the group relative to the pretreatment value; †† - indicates the comparison within the group relative to the value at 1 day after treatment; ‡ - indicates the comparison within the group relative to the value at 3 months after treatment. VAS - visual analog scale