TABLE 2.
Normative means and 95 % confidence intervals for WB-ASRT, with a BBN stimulus, controlled for gestational age at birth and race. Data include one ear with the most complete longitudinal results from 182 infants who passed newborn hearing screening, diagnostic ABR at 1 month and VRA at 9 months of age
| Outcome | Group | LS mean | 95 % CI | |
|---|---|---|---|---|
| Lower | Upper | |||
| ASRT referenced to 2 cm3 coupler (peSPL) | Corrected age | |||
| Birth | 60.6 | 57.5 | 63.7 | |
| 1 month | 66.1 | 63.1 | 69.1 | |
| 6 months | 70.5 | 67.0 | 73.9 | |
| 9 months | 71.7 | 68.6 | 74.7 | |
| 12 months | 70.3 | 66.8 | 73.8 | |
| Group | ||||
| NICU | 68.3 | 66.6 | 70.1 | |
| NN | 67.3 | 63.0 | 71.7 | |
| ASRT real-ear measures (peSPL) | Corrected Age | |||
| Birth | 76.0 | 72.6 | 79.3 | |
| 1 month | 78.8 | 75.5 | 82.0 | |
| 6 months | 81.7 | 77.9 | 85.5 | |
| 9 months | 81.0 | 77.7 | 84.4 | |
| 12 months | 79.4 | 75.6 | 83.2 | |
| Group | ||||
| NICU | 79.6 | 77.8 | 81.5 | |
| NN | 79.1 | 74.3 | 83.9 | |
LS mean least square mean