Table 2.
Clinical and demographic characterization of cochlear implant (CI) and normal hearing (NH) groups.
| Group | N | Sex (% female) |
Mean age ± SD (y) | PTA (dB SPL) | Number of CIs | Acoustic hearing | Implant manufacturer | nonverbal IQ | |
|---|---|---|---|---|---|---|---|---|---|
| L | R | ||||||||
| CI | 48 | 54% | 53.4 ± 13.6* | 26 ± 7 | 25 ± 6 | 1–60% 2–40% | 48% | 60% Cochlear 29% MED-EL 10% AB | 102 ± 15* |
| NH | 54 | 76% | 45.0 ± 16.5 | 9 ± 7 | 10 ± 8 | — | 100% | — | 109 ± 13 |
Pure Tone Averages (PTA) measure CI aided detection thresholds for the CI group; values are means ± standard deviation, *p < 0.01 CI = cochlear implant; NH = normal hearing; y = years; PTA = pure tone averages; dB SPL = decibels of sound pressure level; AB = Advanced Bionics.