How can I identify the side that is affected by benign paroxysmal positional vertigo (BPPV)?

How can I identify the side that is affected by benign paroxysmal positional vertigo (BPPV)?

Steps to determine affected side:

1. Sit on bed so that if you lie down, your head hangs slightly over the end of the bed.
2. Turn head to the right and lie back quickly.
3. Wait 1 minute.
4. If you feel dizzy, then the right ear is your affected ear.
5. If no dizziness occurs, sit up.
6. Wait 1 minute.
7. Turn head to the left and lie back quickly.
8. Wait 1 minute.
9. If you feel dizzy, then the left ear is your affected ear