Table 2.

Sociodemographic characteristics of migraineurs and nonmigraineurs: the Genetic Epidemiology of Migraine Study

Characteristicn*Age, ySexSocioeconomic status
Mean (95% CI)OR (95% CI)Female, %OR (95% CI)Low, %OR (95% CI)Mid, %OR (95% CI)High, %OR (95% CI)
* Nonactive patients in the denominator for 1-year prevalence. Thirty-two patients could not be subtyped; 214 are missing data on attack frequencies.
† Increase in the probability of migraine with a 1-year increase in age, controlling for sex and socioeconomic status.
‡ Increase in the probability of migraine (aura) in women compared with men (reference), controlling for age and socioeconomic status.
§ Increase in the probability of migraine (aura) by socioeconomic status. Reference is high socioeconomic status, controlling for age and sex.
p < 0.01 for differences in attack frequency by sex, controlling for age and socioeconomic status.
OR = odds ratio.
Total sample
Lifetime migraine
Case86342.4 (41.6–43.1)1.0 (1.0–1.01)75.53.15 (2.64–3.76)50.90.84 (0.69–1.03)§27.90.95 (0.77–1.17)§21.21.0
Noncase5,62841.4 (41.1–41.7)50.649.629.121.3
Active migraine
Case62041.4 (40.5–42.3)0.99 (0.98–1.00)77.73.32 (2.69–4.10)51.80.95 (0.75–1.19)§28.71.02 (0.80–1.31)§19.51.0
Noncase5,87141.6 (41.3–41.9)51.449.628.921.4
Active migraineurs
Aura
Yes19241.4 (39.9–42.9)0.93 (0.85–1.02)79.20.99 (0.64–1.57)55.01.09 (0.68–1.74)§26.50.8 (0.47–1.34)§19.51.0
No39642.8 (41.7–43.9)77.850.929.918.5
Attacks per year
0–512342.3 (40.7–43.8)73.949.532.517.9
6–113542.4 (40.8–43.9)74.345.734.320.0
12–236441.8 (39.9–43.6)85.958.728.612.7
≥2418442.7 (40.9–44.4)73.956.025.318.7