Table 1.
Demographic information
| Subject | Etiology (onset) | Age at test | Duration of deafness (years) | Implant use duration (months) | Speech perception score (%) | Implanted side |
|---|---|---|---|---|---|---|
| S1 | Unknown (progressive) | 16 | 13 | 3 | 60 | Right |
| S2 | Perinatal asphyxia (sudden) | 17 | 17 | 3 | 45 | Left |
| S3 | Congenital | 20 | 20 | 24 | 28 | Right |
| S4 | Turner syndrome (progressive) | 26 | 2 | 3 | 96 | Left |
| S5 | Unknown (progressive) | 33 | 11 | 9 | 34 | Right |
| S6 | Stroke (sudden) | 50 | 5 | 9 | 76 | Left |
| S7 | Unknown (progressive) | 32 | 1 | 6 | 94 | Right |
| S8 | Genetic (progressive) | 49 | 4 | 3 | 62 | Left |
| S9 | Chronic otitis (progressive) | 54 | 20 | 6 | 34 | Right |
| S10 | Meniere's syndrome (progressive) | 65 | 8 | 6 | 42 | Left |
| S11 | Unknown (progressive) | 50 | 12 | 20 | 20 | Right |
| S12 | Presbycusis (progressive) | 74 | 9 | 6 | 42 | Right |
| S13 | Unknown (progressive) | 55 | 4 | 6 | 64 | Right |
Etiology and onset of deafness, age at test, duration of profound bilateral deafness before implantation, duration of cochlear implant use, speech perception score, and side of implantation are shown. Speech perception scores (percentage of phonemes correctly perceived) were obtained at the time of the study using Lafon lists (lists of three phonemes long words) (Lafon, 1964) presented in an open set format in quiet at 65 dB HL (hearing level) in the sound field.