Group comparisons | Facial pain intensity | Reduction of facial pain intensity | Pain in the temples or above the ears | Weekly frequency of headaches | Headache intensity |
Saline × anesthetic | 0.704 | 0.196 | 0.384 | 0.966 | 0.220 |
Saline × control | 0.003 | 0.026 | 0.801 | 0.003 | 0.756 |
Anesthetic × control | 0.005 | < 0.001 | 0.204 | 0.002 | 0.112 |
| p* | p** | p*** | p* | p*** |