Table 2 Bivariate analysis of associations between headache types and demographic variables

Gender

 Male (n = 1,065)

Reference

Reference

Reference

Reference

 Female (n = 1,084)

2.0 [1.6–2.5]p < 0.001

1.0 [0.8–1.2] p = 0.94

1.6 [0.7–3.8] p = 0.24

1.6 [1.0-2.5] p = 0.07

Age (years)

 18–25 (n = 325)

Reference

Reference

Reference

Reference

 26–35 (n = 379)

1.1 [0.8–1.6] p = 0.50

1.2 [0.9–1.6] p = 0.26

1.3 [0.2–7.7] p = 0.78

2.0 [0.8–5.4] p = 0.15

 36–45 (n = 558)

1.1 [0.8–1.5] p = 0.61

0.8 [0.6–1.1] p = 0.13

2.9 [0.6–13.5]

p = 0.17

1.6 [0.6-4.0] p = 0.35

 46–55 (n = 457)

0.8 [0.6–1.2] p = 0.28

1.2 [0.9–1.6] p = 0.18

1.4 [0.3–7.8] p = 0.68

1.4 [0.5–3.9] p = 0.48

 56–65 (n = 430)

0.7 [0.5-1.0] p = 0.06

1.3 [1.0-1.7] p = 0.07

1.9 [0.4–9.9] p = 0.45

3.1 [1.3–7.8]p = 0.01

Habitation

 Urban (n = 1,384)

Reference

Reference

Reference

Reference

 Rural (n = 765)

1.1 [0.9–1.4] p = 0.40

0.8 [0.6–0.9]p = 0.006

0.5 [0.2–1.3] p = 0.14

2.0 [1.2–3.1]p = 0.005

Altitude (metres)

 ow < 350 (n = 1,363)

Reference

Reference

Reference

Reference

 High 2,500-3,000 (n = 339)

1.2 [0.9–1.6] p = 0.24

0.5 [0.4–0.6]p < 0.001

0.6 [0.2–2.1] p = 0.44

2.5 [1.4–4.5]p = 0.002

 Very high > 3,500 (n = 447)

1.8 [1.4–2.3]p < 0.001

0.9 [0.7–1.1] p = 0.30

0.3 [0.1–1.4] p = 0.12

1.8 [1.0-3.2] p = 0.06

Marital status

 Single (n = 602)

Reference

Reference

Reference

Reference

 Married (n = 1,252)

1.3 [1.0-1.6] p = 0.06

1.0 [0.8–1.3] p = 0.76

1.9 [0.6–5.8] p = 0.24

1.5 [0.8–2.7] p = 0.18

 Widowed, separated, divorced (n = 295)

1.1 [0.8–1.6] p = 0.43

1.1 [0.8–1.4] p = 0.57

2.1 [0.5–8.3] p = 0.31

1.5 [0.7–3.3] p = 0.30

Education level

 none (n = 62)

1.1 [0.6-2.0] p = 0.70

0.7 [0.4–1.3], p = 0.27

2.8 [0.6–13.2] p = 0.21

2.6 [0.7–9.2] p = 0.15

 School (n = 1,419)

0.9 [0.7–1.1] p = 0.30

0.9 [0.8–1.1] p = 0.34

0.8 [0.3-2.0] p = 0.66

2.1 [1.1–3.8]p = 0.02

 College, university (n = 668)

Reference

Reference

Reference

Reference

Household income (PEN)

 < 600 (n = 432)

1.0 [0.7–1.5] p = 0.84

0.7 [0.5-1.0]p = 0.04

1.6 [0.2–15.1] p = 0.70

2.4 [0.9–6.3] p = 0.09

 600–899 (n = 562)

1.1 [0.8–1.6] p = 0.61

0.9 [0.7–1.2] p = 0.51

1.2 [0.1–11.6] p = 0.87

1.1 [0.4–3.2] p = 0.82

 900-1,299 (n = 518)

0.9 [0.6–1.4] p = 0.73

1.0 [0.7–1.3] p = 0.85

4.0 [0.5–31.4] p = 0.19

1.4 [0.5–3.9] p = 0.51

 1,300-2,199 (n = 412)

1.1 [0.7–1.6] p = 0.66

1.2 [0.8–1.6] p = 0.41

4.4 [0.6–35.7] p = 0.16

1.7 [0.6–4.6] p = 0.33

 ≥ 2,200 (n = 225)

Reference

Reference

Reference

Reference