SUPPLEMENTAL DIGITAL CONTENT
Specific questions asked on pre- and postoperative VAS-questionnaires.
In order to characterize their headache the patients were asked the following questions both pre- and postoperatively:
1) How much does your headache normally bother you?
2) How strong is your headache the days it affects you the most?
3) How strong is your headache the days it affects you the least?
4) How much does your headache affect you at work?
5) How much does your headache affect you in your spare time?
To assess dizziness, the patients were asked the following questions both pre- and postoperatively:
1) How much does your dizziness normally bother you?
2) How much does your dizziness affect you at work?
3) How much does your dizziness affect you in our spare time?