Table 3 Odds ratios and 95% confidence intervals (95% CI) for having excessive daytime sleepiness (EDS) for migraineurs compared to non-migraineurs, and men versus women. Stratified analyses according to headache frequency categories

None

1.38 (1.02─1.87)

0.035

1.25 (1.03─1.51)

0.026

1─11

1.05 (0.89─1.22)

0.58

1.35 (1.19─1.53)

<0.001

12─30

0.98 (0.82─1.18)

0.86

1.34 (1.13─1.59)

<0.001

31─84

1.16 (0.95─1.42)

0.152

1.36 (1.11─1.66)

0.003

85─179

1.04 (0.78─1.40)

0.78

1.21 (0.90─1.64)

0.21

≥180

1.00 (0.69─1.44)

1.00

0.91 (0.63─1.32)

0.62

Missing

1.23 (0.75─2.01)

0.42

1.37 (0.98─1.91)

0.068

Test of homogeneity of odds ratios:

Chi²(6) = 4.69, P = 0.58

Chi²(6) = 4.73, P = 0.58