Table 2 Observed 1-year prevalence (% [95 % CI]) of all headache and headache types by gender, age, household consumption, habitation and altitude

 Male

80.0 [77.2–82.6]

28.9 [25.9–31.9]

44.6 [41.3–47.9]

5.1 [3.6–6.6]

1.3 [0.5–2.1]

 Female

89.2 [87.3–90.8]

38.2 [35.5–40.9]

38.7 [36.0–41.4]

9.4 [7.8–11.0]

2.8 [1.9–3.7]

 18–25

87.1 [83.7–89.9]

31.3 [27.2–35.4]

48.3 [43.9–52.7]

5.9 [3.8–8.0]

1.0 [0.1–1.9]

 26–35

88.4 [85.8–90.7]

36.7 [33.0–40.4]

40.6 [36.8–44.4]

7.8 [5.8–9.8]

2.7 [1.5–3.9]

 36–45

81.7 [77.7–85.2]

36.1 [31.6–40.6]

36.8 [32.3–41.3]

7.8 [5.3–10.3]

1.6 [0.4–2.8]

 46–55

86.6 [82.1–90.1]

33.9 [28.5–39.3]

41.9 [36.3–47.5]

9.7 [6.3–13.1]

2.6 [0.8–4.4]

 56–65

78.4 [72.3–83.6]

34.4 [28.1–40.7]

33.9 [27.6–40.2]

8.3 [4.6–12.0]

3.7 [1.2–6.2]

 950–1,200

85.2 [82.6–87.6]

34.4 [31.1–37.7]

41.4 [38.0–44.8]

7.3 [5.5–9.1]

2.2 [1.2–3.2]

 <950

83.5 [80.7–85.9]

35.2 [31.9–38.5]

39.2 [35.9–42.2]

7.2 [5.4–9.0]

1.5 [0.7–2.3]

 >1,200

89.2 [85.9–91.7]

34.3 [30.0–38.6]

43.9 [39.4–48.4]

9.1 [6.5–11.7]

3.4 [1.8–5.0]

 Rural

83.4 [81.3–85.4]

35.2 [32.6–37.7]

38.0 [35.4–40.6]

8.1 [6.6–9.6]

2.0 [1.3–2.7]

 Urban

88.9 [86.4–90.9]

33.8 [30.5–37.1]

46.5 [43.0–50.0]

7.0 [5.1–8.8]

2.6 [1.5–3.7]

 <1,000 m

84.5 [82.3–86.7]

28.7 [25.9–31.5]

46.4 [43.3–49.5]

8.2 [6.5–9.9]

1.8 [1.0–2.6]

 ≥1,000 m

86.3 [84.3–88.3]

40.1 [37.2–43.0]

36.3 [33.5–39.1]

9.7 [7.9–11.4]

2.5 [1.6–3.4]