Table 3 Risk of each type of dementia in the migraine cohort and matched controls
Variables | Subjects, No | cases, No | Person- Years, No | Incidence rate (95% CI) per 100,000 person years | Hazard ratio (95% CI) |
|---|---|---|---|---|---|
Alzheimer’s dementia | |||||
Matched Controls | 44,195 | 2,685 | 348,995 | 76.9 (74.1–79.8) | 1.00 |
Migraine cohort | 44,195 | 3,401 | 343,871 | 98.9 (95.6–102.2) | 1.29 (1.23–1.35) |
Vascular dementia | |||||
Matched Controls | 44,195 | 408 | 348,995 | 11.7 (10.6–12.9) | 1.00 |
Migraine cohort | 44,195 | 544 | 343,871 | 15.8 (14.5–17.2) | 1.35 (1.19–1.54) |
Mixed, or other specified dementias | |||||
Matched Controls | 44,195 | 75 | 348,995 | 2.1 (1.7–2.7) | 1.00 |
Migraine cohort | 44,195 | 100 | 343,871 | 2.9 (2.4–3.5) | 1.36 (1.00–1.83) |
Unspecified dementia | |||||
Matched Controls | 44,195 | 589 | 348,995 | 16.9 (15.6–18.) | 1.00 |
Migraine cohort | 44,195 | 755 | 343,871 | 22.0 (20.4–23.6) | 1.30 (1.17–1.45) |