Table 3 Drinking frequency and odds ratio of migraine and tension-type headache in comparison with other headaches according to alcohol flushing

0.71 (0.18–2.83)

0.63 (0.15–2.70)

0.67 (0.16–2.86)

0.680

0.92 (0.61–1.38)

0.039

0.51 (0.25–1.06)

0.11 (0.02–0.87)

0.12 (0.02–0.92)

0.001

0.45 (0.28–0.74)

2.04 (0.65–6.41)

1.57 (0.49–5.06)

0.99 (0.30–3.25)

0.082

0.80 (0.62–1.03)

0.810

0.83 (0.51–1.33)

0.40 (0.17–0.91)

0.71 (0.36–1.43)

0.092

0.83 (0.66–1.03)

1.04 (0.67–1.61)

0.41 (0.19–0.85)

1.01 (0.44–2.31)

0.185

0.85 (0.67–1.08)

0.532

0.68 (0.46–1.02)

0.91 (0.30–2.70)

0.39 (0.08–1.81)

0.060

0.75 (0.56–1.01)

 Tension-type headache

1.18 (0.75–1.85)

1.13 (0.62–2.05)

1.99 (0.95–4.16)

0.143

1.18 (0.95–1.46)

0.317

0.75 (0.50–1.14)

1.24 (0.44–3.48)

1.35 (0.48–3.86)

0.863

0.98 (0.74–1.29)

0.97 (0.64–1.48)

0.49 (0.27–0.91)

0.76 (0.40–1.47)

0.096

0.84 (0.68–1.03)

0.104

0.64 (0.45–0.90)

0.43 (0.18–1.06)

0.23 (0.07–0.76)

<0.001

0.63 (0.49–0.81)

 Tension-type headache

1.32 (0.87–1.99)

1.21 (0.74–1.98)

1.06 (0.61–1.82)

0.942

0.99 (0.84–1.17)

0.724

0.79 (0.58–1.07)

0.58 (0.31–1.09)

0.85 (0.48–1.50)

0.142

0.88 (0.74–1.04)