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Demographic Characterization
| CH Patients | Controls | |
|---|---|---|
| Number of individuals | 517 | 581 |
| Age (years) | 52.4 | n/a |
| Age at onset (years) | 32.4 | – |
| Male % (n) | 68.3 (353) | 54.9 (319) |
| Heredity † % (n) | 12.5 (59) | n/a |
| Episodic CH % (n) | 89.6 (463) | – |
| Diurnal rhythmicity † % (n) | 68.3 (300) | – |
Based on a subgroup of patients for whom detailed information was available: 472 individuals (heredity) and 439 individuals (diurnal rhythmicity). CH, cluster headache; n/a, not available.
