HRs of migraine diagnoses, recorded in the National Hospital register, in relation to cardiovascular fitness levels in young adult men followed for up to 46 years
| Outpatient migraine diagnoses only | ||
| Cardiovascular fitness* | Migraine/total no. | HR (95% CI)† |
| High | 1759/338 295 | 1.00 (reference) |
| Medium | 4060/710 865 | 1.08 (1.02 to 1.15) |
| Low | 1044/163 946 | 1.18 (1.08 to 1.28) |
| All migraine diagnoses (inpatient and outpatient) | ||
| Cardiovascular fitness* | Migraine/total no. | HR (95% CI)† |
| High | 2655/3 38 295 | 1.00 (reference) |
| Medium | 5852/7 10 865 | 1.05 (1.00 to 1.12) |
| Low | 1536/163 946 | 1.05 (0.98 to 1.12) |
*High level=reference category.
†Adjusted for age, conscription calendar year and region and parental education.
.BMI, body mass index;no., number of events.