| VAS | Preprocedural No. (%) | Immediate Post No. (%) | 1 month No. (%) | 6 months No. (%) | 12 months No. (%) | p value |
| Mild | 0 | 28 (82.4) | 29 (85.3) | 21 (61.7) | 23 (67.6) | <0.001 |
| Moderate | 15 (44.1) | 4 (11.8) | 4 (11.8) | 9 (26.5) | 8 (23.6) | |
| Severe | 19 (55.9) | 2 (5.8) | 1 (2.9) | 4 (11.8) | 3 (8.8) |