Characteristics of the study group
| Sex | |
| Male | 157 (55%) |
| Female | 126 (45%) |
| Age | |
| Mean (SD) (yr) | 7.8 (4.8) |
| Minimum | 6 weeks |
| Maximum | 17 years |
| Audiogram (temporal bone sides) | |
| Normal | 152 (27%) |
| Sensorineural loss | 158 (28%) |
| Mixed loss | 39 (7%) |
| Conductive loss | 112 (20%) |
| Unavailable | 100 (18%) |