| Demographic Characteristics | |
| Number of patients | 240 |
|
| 21 - 88 |
| Age range at the time of implantation (mean), years | (56 ± 16.8) |
| Duration of deafness range (mean), years | 0 - 63 (21 ± 15.4) |
| Sex (Male, Female) | 114, 126 |
| Side (Left, Right, Bilateral) | 105, 130, 5 |
| Etiology: |
|
| Idopathic | 145 |
| Familial or genetic | 46 |
| Infectious | 16 |
| Physical or noise-induced | 21 |
| Meniere’s | 12 |