Patients grouped according to whether or not they were referred to a neurology clinic for chronic headache.
| Referred to neurology clinic | Not referred to neurology clinic | Total | |
|---|---|---|---|
| Male, n | 14 | 80 | 94 |
| mean age in years (SD) | 47 (16) | 48 (15) | 48 (15) |
| Female, n | 16 | 105 | 121 |
| mean age in years (SD) | 41 (14) | 47 (18) | 47 (18) |
| Total, n | 30 | 185 | 215 |
| mean age in years (SD) | 44 (15) | 48 (17) | 47 (17) |