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Table 2 Effects of amenorrhoea on migraine without aura (MO) in women with menstrual migraine (MM)

From: Contraceptive-induced amenorrhoea leads to reduced migraine frequency in women with menstrual migraine without aura

  Amenorrhoea (N = 23) Menstruation/withdrawal bleeding (N = 26)
Proportions with reduced % (n) % (n) OR 95% CI p
Attack frequency 61 (14) 31 (8) 3.5 1.1-11.4 0.04
Attack intensity 30 (7) 19 (5) 1.8 0.5-6.9 0.39
Attack duration 30 (7) 23 (6) 1.5 0.4-5.2 0.58
Proportion of women reporting no MO-days during the preceding month 39 (9) 4 (1) 16.1 1.8-140.4 0.003