108 Chapter 5 Migraine in relation to menstruation (E-diary data) Prevalence of menstrual migraine did not differ between women with MO and MA (59% versus 53%, p=0.176). In Figure 1 the percentage of women with a migraine attack on each day of the menstrual cycle is shown for women with MO versus MA. Figure 1. A) Percentage of women (MO versus MA) with a migraine attack on each day of the menstrual cycle. Data from 2776 menstrual cycles from 526 menstruating women. Menstrual cycles were standardized to 28 days; the perimenstrual days of the menstrual cycle were fixed to 5 days, while the nonperimenstrual days were standardized to 23 (28-5) days. B) Percentage of women (MO and MA pooled) with a migraine attack with versus without aura on each day of the menstrual cycle. C) Percentage of women with MA with a migraine attack with versus without aura on each day of the menstrual cycle. Data from 1166 menstrual cycles from 210 menstruating women.
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