Table 2.
Perceptual and acoustic assessment results for patients with essential tremors before and after the administration of botulinum toxin and propranolol, comparing the results of each treatment method with pretreatment values and comparing the results of the two treatments.
| N | Mean | Standard deviation | P1 value | P2 value | ||
|---|---|---|---|---|---|---|
| Overall Level of change | Pre | 5 | 92.0 | 8.4 | - x - | |
| BT | 5 | 82.6 | 18.0 | 0.336 | 0.345 | |
| PP | 5 | 71.6 | 33.1 | 0.109 | ||
| Vocal instability | Pre | 5 | 90.0 | 12.2 | - x - | |
| BT | 5 | 73.0 | 22.8 | 0.104 | 1.000 | |
| PP | 5 | 70.8 | 29.9 | 0.068 | ||
| Jitter | Pre | 5 | 4.76 | 4.69 | - x - | |
| BT | 5 | 3.90 | 3.82 | 0.686 | 0.893 | |
| PP | 5 | 4.10 | 5.72 | 0.500 | ||
| Shimmer | Pre | 5 | 24.56 | 14.69 | - x - | |
| BT | 5 | 20.41 | 10.24 | 0.500 | 0.893 | |
| PP | 5 | 21.21 | 19.18 | 0.686 | ||
| Variability of F0 | Pre | 5 | 11.60 | 4.98 | - x - | |
| BT | 5 | 8.20 | 3.42 | 0.225 | 0.893 | |
| PP | 5 | 9.00 | 7.07 | 0.077 |
Pre, pretreatment; BT, botulinum toxin; PP, propranolol; F0, fundamental frequency; N, number of participants; P1, comparison of each treatment method before and after treatment; P2, comparison between treatments.