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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