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Pain scores of trapezius myalgia before and after treatment
| Group | VAS, day 0 | VAS, day 60 | Mean differences (95% CI) | P value |
|---|---|---|---|---|
| Onabotulinum toxin A | 7.75 ± 1.65 | 5.50 ± 1.79 | 2.25 ± 0.79 (1.88 to 2.63) | <0.001 |
| Incobotulinum toxin A | 7.40 ± 1.98 | 3.65 ± 1.93 | 3.75 ± 1.97 (2.83 to 4.67) | <0.001 |
