Characteristics | HR | ||||
Crude* | P value | Adjusted*† | P value | ||
Cohort 1 | |||||
HRs for rheumatoid arthritis in migraine with aura | |||||
Migraine | 1.32 (0.97 to 1.78) | 0.078 | 1.23 (0.91 to 1.67) | 0.183 | |
Control I | 1.00 | 1.00 | |||
HRs for rheumatoid arthritis in migraine without aura | |||||
Migraine | 1.52 (1.38 to 1.67) | <0.001‡ | 1.48 (1.34 to 1.63) | <0.001‡ | |
Control I | 1.00 | 1.00 | |||
Cohort 2 | |||||
HR for migraine with aura | |||||
RA | 1.40 (0.98 to 2.01) | 0.065 | 1.36 (0.95 to 1.96) | 0.094 | |
Control II | 1.00 | 1.00 | |||
HR for migraine without aura | |||||
RA | 1.38 (1.26 to 1.53) | <0.001‡ | 1.35 (1.23 to 1.49) | <0.001‡ | |
Control II | 1.00 | 1.00 |
*Stratified model for age, sex, income and region of residence.
†Adjusted model for autoimmune disease, Charlson Comorbidity Index (except rheumatoid diseases), obesity (body mass index), smoking and alcohol intake histories.
‡Cox-proportional hazard regression model, significance at p<0.05.
RA, rheumatoid arthritis.