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Paired differences of mean trapezius thickness
| Onabotulinum toxin A | Incobotulinum toxin A | Mean difference ± SD | P value | |
|---|---|---|---|---|
|
|
||||
| Mean ± SD | Mean ± SD | |||
| Day 60+ | 2.31 ± 1.59 | 2.30 ± 1.16 | 0.01 ± 1.30 | 0.991 |
| 1 year++ | 0.04 ± 0.28 | 0.74 ± 0.48 | −0.70 ± 0.44 | <0.001 |
| 1 year+++ | −2.27 ± 1.53 | −1.56 ± 1.07 | −0.71 ± 0.30 | 0.027 |
+Day 0–60
++Day 0–1 year
+++Day 60–1 year
