Fig. 4

Solid, black curve plots the percentage [number of women] on the left [right] y-axis receiving an sMM diagnose by α-level on the x-axis. The dashed, blue curve plots the percentage of women with a \(\frac {2}{3}\)MRM diagnosis that receive an sMRM(α)-diagnosis. The red line represents the expected distribution, given that all women satisfy the test’s null hypothesis of non-association (i.e. constant μ); as such the areas between the solid black curve and the red line can be interpreted as a measure of the aggregated association between menstruation and migraine in the patient population