Table 2 Basic characteristics of the present headache sufferers based on the frequency of headache attacks

n = 69

n = 135

n = 28

n = 13

 Women (n [%] {missing})¹

40 [58.0] {0}

84 [62.2] {0}

21 [75.0] {0}

7 [53.8] {0}

 Age (mean [SD] {missing})²

58.0 [4.6] {0}

58.4 [4.0] {0}

58.8 [3.6] {0}

61.2 [3.6] {0}

 Education > 12 years (n [%] {missing})³

20 [30.0] {0}

44 [32.6] {0}

9 [32.1] {0}

2 [15.4] {0}

 BMI (mean [SD] {missing})⁴

26.3 [4.0] {1}

26.8 [4.0] {0}

27.2 [3.9] {0}

27.1 [3.8] {0}

 SBP (mean [SD] {missing}) ⁴

133.2 [17.0] {2}

131.4 [18.6] {2}

131.5 [18.6] {0}

135.1 [21.3] {0}

 DBP (mean [SD] {missing}) ⁴

78.1 [11.0] {2}

76.4 [11.5] {1}

74.5 [13.1] {0}

77.7 [15.5] {0}

 Non-fasting glucose (mean [SD] {missing})

5.4 [0.9] {1}

5.4 [1.2] {4}

5.4 [0.8] {1}

5.9 [2.9] {1}

 Cholesterol (mean [SD] {missing})

5.6 [0.9] {1}

5.9 [1.1] {4}

5.6 [0.9] {1}

5.7 [1.2] {1}

 Daily smoking (n [%] {missing})³

9 [13.0] {0}

26 [19.3] {0}

3 [10.7] {0}

0 [0] {0}

 HADS total score (mean [SD] {missing})⁴**

6.1 [4.7] {0}

8.1 [6.0] {1}

10.7 [7.0] {0}

10.0 [5.7] {0}

 Chronic pain last 6 months (n [%] {missing})³*

32 [46.4] {1}

73 [54.1] {1}

21 [75.0] {0}

10 [76.9] {1}

 Consuming alcohol ≥1/week (n [%] {missing})³

29 [42.0] {2}

63 [46.7] {2}

12 [42.9] {0}

3 [23.1] {0}

 Painkillers ≥1/week (n [%] {missing})³*

40 [58.0] {0}

95 [70.4] {4}

25 [89.3] {0}

9 [69.2] {0}