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Figure 1 Migraine headache relief by migraine subtype according to presence or absence of aura. Significant relief (Significant) =  50% reduction in monthly migraine frequency. No relief (None) = <50% reduction in monthly migraine frequency. Chi-square test = 0.40, p = 0.82 for the comparison between groups. Solid bars = migraine with aura (n = 38); ruled bars = migraine without aura (n = 12).
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