Table 2. Descriptive statistics of the visual analogue scale scores for the two groups at the six assessment times and the p-values of significance testing.
*An independent-samples t-test was used to detect significant differences in the visual analogue scale scores between the two groups.
BO, Botox group; PL, placebo; SD, standard deviation; Min, minimum value; Max, maximum value
| Assessment time | Group | Mean | SD | Min. | Max. | P-value* |
| Before injection | BO | 8.62 | 1.35 | 7.53 | 9.82 | 0.857 |
| PL | 8.51 | 1.08 | 7.24 | 9.53 | ||
| 2nd Week | BO | 2.83 | 1.47 | 1.65 | 5.06 | <0.001 |
| PL | 8.04 | 1.05 | 6.73 | 9.24 | ||
| 1st Month | BO | 1.32 | 1.33 | 0.76 | 4.65 | <0.001 |
| PL | 8.07 | 1.15 | 6.58 | 9.86 | ||
| 3rd Month | BO | 2.41 | 1.97 | 0.96 | 4.92 | <0.001 |
| PL | 8.42 | 0.99 | 6.23 | 9.57 | ||
| 4th Month | BO | 4.73 | 1.05 | 3.65 | 6.38 | <0.001 |
| PL | 8.34 | 0.67 | 7.16 | 9.66 | ||
| 6th Month | BO | 6.07 | 1.05 | 4.97 | 7.53 | <0.001 |
| PL | 8.62 | 0.51 | 6.98 | 9.84 |