Table 1: Patient characteristics and head pain diagnosis.
| Total population (n = 71) | Patients with permanent implant (n = 65) | |
| Gender | 23 male/48 female | 20 male/45 female |
| Age at implant of ONS lead (year) | Mean: 49 (23-71 y) | Mean: 49 (23-71 y) |
| FNSS/Cervicogenic Headache | 35 | 32 |
| Cluster headache | 14 | 13 |
| Cervicogenic headache (ICHD-II 13.12) | 16 | 14 |
| Atypical hemifacialgia/headache | 1 | 1 |
| SUNCT | 1 | 1 |
| Chronic migraine | 2 | 2 |
| Hemicrania continua | 1 | 1 |
| Post-surgery neuropathy | 1 | 1 |