Table 4.
Comparison of global language scores for children using cochlear implants (CI), categorised according to age at cochlear implant activation at 9 months or 12 months.
| CI activation | 9 months | 12 months | |||
|---|---|---|---|---|---|
| ≤ 9 mos | > 9 mos | ≤ 12 mos | > 12 mos | ||
| No Add Disabilities | n | 14 | 71 | 29 | 56 |
| Language, mean (SD) | 94.3 (9.5) | 79.3 (22.8) | 94.4 (15.8) | 75.3 (21.8) | |
| 95% CI | 88.8 – 99.8 | 73.9 – 84.7 | 88.4 – 100.4 | 69.4 – 81.1 | |
| p | 0.019* | <0.0001* | |||
| η2 | 0.065 | 0.18 | |||
| Add Disabilities | n | 5 | 39 | 14 | 30 |
| Language, mean (SD) | 80.4 (11.5) | 50.7 (26.8) | 61.1 (28.4) | 50.8 (26.4) | |
| 95% CI | 66.2 – 94.6 | 42.0 – 59.4 | 44.7 – 77.5 | 40.9 – 60.7 | |
| p | 0.019* | 0.25 | |||
| η2 | 0.12 | 0.03 | |||
*
marks significance at .05 probability level.
An effect size or η2 of .06 is considered medium, and .14 is large (Cohen, 1988).