Table 4 Headache triggers

Number

1054

(%)

413

(%)

641

(%)

Lack of sleep

353

(35.3%)

155

(39.4%)

198

(30.9%)

0.032^b

0.018

Stress

308

(30.8%)

127

(32.3%)

181

(28.2%)

0.441^b

0.314

Weather change

298

(29.8%)

123

(31.3%)

175

(27.3%)

0.436^b

0.483

Bright lights

183

(18.3%)

84

(21.4%)

99

(15.4%)

0.045^b

0.067

Menstruation

150

(15%)

51

(13.0%)

99

(15.4%)

0.174^b

0.208

Fatigue

148

(14.8%)

60

(15.3%)

88

(13.7%)

0.738^b

0.811

Huger

143

(14.3%)

58

(14.8%)

85

(13.3%)

0.782^b

0.862

Odors

135

(13.5%)

47

(12.0%)

88

(13.7%)

0.258^b

0.208

Releif from stress

117

(11.7%)

49

(12.5%)

68

(10.6%)

0.547^b

0.455

Alcohol

113

(11.3%)

43

(10.9%)

70

(10.9%)

0.838^b

0.702

Over heated

91

(9.1%)

33

(8.4%)

58

(9.0%)

0.575^b

0.493

Food

82

(8.2%)

30

(7.6%)

52

(8.1%)

0.638^b

0.541

Loud sounds

82

(8.2%)

34

(8.7%)

48

(7.5%)

0.724^b

0.912

Smoke

80

(8.0%)

29

(7.4%)

51

(8.0%)

0.634^b

0.442

Screen time

74

(7.4%)

35

(8.9%)

39

(6.1%)

0.173^b

0.198

Altitude change

72

(7.2%)

28

(7.1%)

44

(6.9%)

1.000^b

0.770

Physical exertion

71

(7.1%)

25

(6.4%)

46

(7.2%)

0.529^b

0.348

Too much sleep

44

(4.4%)

22

(5.6%)

22

(3.4%)

0.156^b

0.156

Reading

44

(4.4%)

26

(6.6%)

18

(2.8%)

0.007^b

0.016

Visual patterns

41

(4.1%)

19

(4.8%)

22

(3.4%)

0.415^b

0.314

Caffeine

34

(3.4%)

11

(2.8%)

23

(3.6%)

0.477^b

0.435

Medicine

30

(3.0%)

11

(2.8%)

19

(3.1%)

0.851^b

0.700

Coughing/sneezing

30

(3.0%)

17

(4.3%)

13

(2.0%)

0.058^b

0.090

Sex/orgasm

12

(1.2%)

6

(1.5%)

6

(0.9%)

0.555^b

0.490

Nonalcoholic beverage

11

(1.1%)

4

(1.0%)

7

(1.1%)

1.000^b

0.710

I don’t know

191

(19.1%)

64

(16.3%)

127

(19.8%)

0.071^b

0.060

Missing

54

–

20

–

34

–