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Table 2 The course of headache during pregnancy ('+' also contains those patients reporting decreased headaches after the 3rd month of pregnancy)

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

Headache type

Improved +

Worsened

No change

Definite migraine

162 (57 %)

31 (11 %)

91 (32)

Probable migraine

52 (46 %)

15 (13.3 %)

46 (40.7 %)

Total migraine

214 (53.9 %)*

46 (11.6 %)**

137 (34.5 %)

Definite TTH

12 (34.3 %)

1 (2.9 %)

22 (62.9 %)

Probable TTH

26 (42.6 %)

3 (4.9 %)

32 (52.5 %)

Total TTH

38 (39.6 %)

4 (4.2 %)

54 (56.3 %)***

  1. Pearson Chi-square, Yates’ continuity correction and Fisher’s exact tests were used where appropriate
  2. * p < 0.001, compared to total TTH
  3. ** p = 0.036 compared to total TTH
  4. *** p < 0.001 compared to total migraine