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***