Cross sectional study (HUNT 2): Prevalence odds ratio (OR)* for headache in different blood pressure categories
| All headache types | Non-migrainous headache | Migraine | |||||
|---|---|---|---|---|---|---|---|
| Variable | Total number | n | OR (95% CI) | n | OR (95% CI) | n | OR (95% CI) |
| *Adjusted for age, occupational status, and use of antihypertensive medication. | |||||||
| Women: | |||||||
| Systolic blood pressure (mm Hg) | |||||||
| <140 | 17960 | 9381 | 1.0 (reference) | 6051 | 1.0 (reference) | 3330 | 1.0 (reference) |
| 140–59 | 5410 | 2236 | 1.0 (0.9 to 1.0) | 1498 | 1.0 (0.9 to 1.0) | 729 | 1.0 (0.9 to 1.1) |
| ≥160 | 4290 | 1324 | 0.8 (0.8 to 0.9) | 927 | 0.8 (0.8 to 0.9) | 397 | 0.9 (0.8 to 1.1) |
| Diastolic blood pressure (mm Hg) | |||||||
| <90 | 22896 | 11041 | 1.0 (reference) | 7229 | 1.0 (reference) | 3812 | 1.0 (reference) |
| ≥90 | 4764 | 1900 | 1.0 (1.0 to 1.1) | 1247 | 1.0 (0.9 to 1.0) | 653 | 1.2 (1.0 to 1.3) |
| Men: | |||||||
| Systolic blood pressure (mm Hg) | |||||||
| <140 | 13003 | 4130 | 1.0 (reference) | 3051 | 1.0 (reference) | 1079 | 1.0 (reference) |
| 140–59 | 7127 | 2015 | 1.0 (0.9 to 1.0) | 1514 | 1.0 (0.9 to 1.1) | 501 | 1.0 (0.9 to 1.1) |
| ≥160 | 3536 | 740 | 0.9 (0.8 to 1.0) | 578 | 0.9 (0.9 to 1.1) | 162 | 0.8 (0.7 to 1.0) |
| Diastolic blood pressure (mm Hg) | |||||||
| <90 | 17822 | 5239 | 1.0 (reference) | 3908 | 1.0 (reference) | 1331 | 1.0 (reference) |
| ≥90 | 5844 | 1646 | 1.2 (1.1 to 1.2) | 1235 | 1.1 (1.0 to 1.2) | 411 | 1.1 (1.0 to 1.3) |