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Table 4 The relationship between experiencing headache during menstruation and MIDAS grade

From: Impact of sex hormonal changes on tension-type headache and migraine: a cross-sectional population-based survey in 2,600 women

  Migraine presence of menstrual headache TTH presence of menstrual headache Migraine + TTH presence of menstrual headache
Yes No Yes No Yes No
n 498 224 130 103 642 343
Median MIDAS grade 1* 1 1 1 1** 1
IQR 2 1 0 0 1 0
  1. The interquartile range (IQR) is a measure of statistical dispersion in descriptive statistics, being equal to the difference between the upper and lower quartiles, IQR = Q3−Q1
  2. * p < 0.001 (Mann–Whitney U test); compared to migraineurs without menstrual migraine headaches
  3. ** p < 0.001 (Mann–Whitney U test); compared to without menstrual headaches