Table 3.

Side effects during blinded phase

Side effect	Active	Sham
Number	41	56
Ears pulse, tingle, sting, itch, small electric feeling, ear clips too tight	12	6
Head tingles	0	1
Electric shot in feet, burning in legs, legs tingling	1	1
Spasms, leg spasms	1	2
Burning in buttocks	1	0
Ringing in ears	1	0
Drowsy, sleepy, fell asleep, relaxing	7	4
Dizzy, lightheaded, feeling crooked	3	1
Nausea, stomach rolled	1	2
Shaky	0	1
Heart racing, chest pain	0	2
Headache, slight headache	2	3
Metallic or unusual taste in mouth	1	1
Increased pain	2	1

Note: Counts reflect number of people reporting effect at least once.