Table 2 Observed 1-year prevalence (%) by headache type, gender and age, observed 1-day prevalence of any headache (headache yesterday), and adjusted values for gender and age

All (N = 2316)

28.7 [26.9–30.6]

42.9 [40.9–45.0]

1.8 [1.3–2.4]

2.1 [1.5–2.7]

11.0 [9.7–12.3]

 male (n = 1442)

24.3 [22.1–26.6]

45.3 [42.7–47.9]

0.8 [0.4–1.4]

1.4 [0.8–2.1]

8.8 [7.4–10.4]

 female (n = 874)

36.0 [32.9–39.3]

39.0 [35.8–42.3]

3.4 [2.4–4.9]

3.2 [2.3–4.6]

14.5 [12.3–17.0]

p (male vs female)^a

< 0.0001

0.0032

< 0.0001

0.0039

< 0.0001

 18–25 (n = 769)

31.1 [27.8–34.5]

41.4 [37.8–44.9]

1.3 [0.6–2.4]

2.1 [1.2–3.4]

10.3 (8.2–12.6]

 26–35 (n = 818)

28.0 [24.9–31.2]

45.7 [42.3–49.2]

1.6 [0.8–2.7]

1.7 [0.9–2.9]

10.6 [8.6–13.0]

 36–45 (n = 448)

29.5 [25.3–33.9]

42.0 [37.3–46.7]

2.2 [1.1–4.1]

2.7 [1.4–4.6]

11.6 [8.8–14.9]

 46–55 (n = 199)

24.6 [18.8–31.2]

39.7 [32.8–46.9]

3.5 [1.4–7.1]

2.5 [0.8–5.8]

13.1 [8.7–18.6]

 56–65 (n = 82)

19.5 [11.6–29.7]

42.7 [31.8–54.1]

1.2 [0.0–6.6]

1.2 [0.0–6.6]

12.2 [6.0–21.3]

Adjusted for gender and age^b

25.0 [23.2–26.8]

34.1 [32.2–36.0]

2.0%

2.3%

11.5%