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VAS reduction of 50% of the initial value in both groups after treatment
| Group | Before | 1 week after | 1 month after | 3 months after |
|---|---|---|---|---|
| P group (n=45) | 0 | 8 | 26 | 40 |
| O group (n=46) | 0 | 13 | 41a | 43 |
Notes: Data are presented as n. P group = pharmacological therapy group; O group = ozone therapy group. P<0.05 was considered statistically significant.
Chi-squared test, P<0.05.
Abbreviation: VAS, Visual Analog Scale.
