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Table 1 Subject population

From: Results of a patient survey for an implantable neurostimulator to treat migraine headaches

Gender

Female 79%

Age

37 (range 18–76)

Years of migraines

17 (range 2–66)

Frequency

Attacks/month: 7 (range 2–15)

Days/month: 11 (range 4–20)

Duration

<1 day: 9%

1–2 days: 55%

2 days: 36%

Symptoms

Nausea/vomiting: 66%

Light sensitivity: 90%

Sound sensitivity: 76%

Disability scores

MIDAS

I: 2 III: 13

II: 0 IV: 26

HIT-6

64 (range 57–72)