Table 3

Proportions diagnosed with bilateral hearing loss by 6 and/or 12 months from the 1993 cohort by presence of risk factor

Babies with known risk factors (n=49)Babies without known risk factors* (n=71)
Diagnosed by 6 mthDiagnosed by 6 mthDiagnosed by 12 mth
*Includes children for whom a risk factor was not present, as well as children for whom no data about risk factors were available.
†Includes two children for whom severity of hearing loss was not known.
Mild1/18 (5.6%)1/31 (3.2%)3/31 (9.7%)
Moderate4/16 (25.0%)0/22 (0.0%)2/22 (9.1%)
Severe7/9 (77.8%)0/11 (0.0%)4/11 (36.4%)
Profound4/6 (66.7%)0/5 (0.0%)2/5 (40.0%)
Total16/49 (32.7%)1/71† (1.4%)11/71† (15.5%)