Table 1.
Mean, median scores, and standard deviations for demographic and audiometric measures at sixth grade for children with normal hearing (NH) and children with cochlear implants (CIs).
| Variable | NH (29) |
CI (33) |
||||
|---|---|---|---|---|---|---|
| M | Mdn | SD | M | Mdn | SD | |
| Age at time of testing (months) | 147 | 147 | 4 | 150 | 149 | 5 |
| Socioeconomic status (out of 64) | 36 | 36 | 13 | 34 | 36 | 11 |
| Leiter brief IQ standard score | 105 | 102 | 15 | 102 | 100 | 15 |
| Age at identification (months) | 6.6 | 4.0 | 7.4 | |||
| Age at first implant (months) | 22 | 14 | 19 | |||
| Age at second implant (months) | 46 | 45 | 25 | |||
| Preimplant better ear PTA (dB) | 100 | 100 | 16 | |||
| Aided two-ear PTA (dB) | 26 | 25 | 9 | |||
Note. Socioeconomic status is a two-factor index based on the occupation and education of the primary income earner in the household. PTAs are given in decibel hearing level and are for the three speech frequencies of 500, 1000, and 2000 Hz. Twenty-five children had two CIs. PTA = pure-tone average.