Fig. 5From: Characteristics of menstrual versus non-menstrual migraine during pregnancy: a longitudinal population-based studyHeadache intensity before, during and after pregnancy. Data shown represents that of Mentrual (MM) and Non-Menstrual Migraine (nMM) groups. **P < 0.01; IQR: Interquartile Range; No information about the pain intensity due to migraine was collected before pregnancy; The headache intensity showed nearly significant difference between the two groups post-partum (8 week after delivery) (P = 0.054)Back to article page