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Table 1 Population variables

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

  Amenorrhoea (n = 23) Menstruation/withdrawal bleeding (n = 26) p-value
Continuous variables 1 Median  
Age at migraine onset 18 18 0.92
Age at menstrual migraine onset 25 22 0.48
Duration of hormonal contraceptive use (months) 48 24 0.02
Dichotomous variables 2 n (%)  
Migraine prophylaxis, n (%) 1 (4) 3 (12) 0.42
Triptan use, n (%) 15 (65) 14 (54) 0.44
Ever consulted a neurologist for migraine, n (%) 8 (35) 8 (31) 0.78
Endometriosis 2 (9) 0 (0) 0.22
  1. 1Independent samples median test. 2Fischers exact mid-p test.