Table 2 Risks of MOH in relation to current use of tobacco

Tobacco use

1.79 (1.25–2.56)

0.002

1.35 (0.89–2.06)

0.157

3.60 (1.73–7.50)

0.001

1.34 (0.88–2.04)

0.171

Male sex

1.06 (0.79–1.41)

0.712

0.91 (0.67–1.25)

0.563

Age (years)

1.00 (0.99–1.01)

0.528

1.00 (0.99–1.01)

0.602

1.00 (0.98–1.02)

0.968

1.00 (0.99–1.01)

0.622

Monthly headache days

1.00 (0.98–1.02)

0.873

1.00 (0.98–1.02)

0.977

0.97 (0.94–1.02)

0.207

1.01 (0.99–1.03)

0.494

CM duration (years)

1.03 (1.01–1.05)

< 0.001

1.03 (1.01–1.05)

< 0.001

1.13 (1.06–1.19)

< 0.001

1.02 (1.00–1.03)

0.033

Average headache intensity

1.24 (1.16–1.32)

< 0.001

1.24 (1.16–1.32)

< 0.001

1.17 (1.01–1.36)

0.038

1.26 (1.18–1.35)

< 0.001

HADS-A

0.98 (0.94–1.01)

0.154

0.98 (0.94–1.01)

0.152

0.94 (0.76–1.02)

0.129

0.99 (0.95–1.03)

0.498

HADS-D

1.03 (1.00–1.07)

0.091

1.03 (1.00–1.07)

0.090

1.05 (0.97–1.15)

0.232

1.03 (0.99–1.07)

0.198

PSQI

1.03 (1.00–1.06)

0.087

1.03 (1.00–1.06)

0.070

1.03 (0.96–1.11)

0.461

1.03 (0.99–1.06)

0.120

Sex-by-smoking interaction

2.63 (1.16–5.98)

0.021