| Severity of fasciculation | Group M N (%) N = 28 | Group S N (%) N = 28 | P value |
| 0 | 22 (78.6) | 1 (3.6) | 0.00001 |
| 1 | 6 (21.4) | 5 (17.9) | 0.006 |
| 2 | 2 (7.1) | 9 (32.1) | 0.005 |
| 3 | 0 (0) | 13 (46.4) | 0.00001 |