Two-way ANOVA of EFR amplitudes relative to threshold at 1024 Hz AM
| Source | Sum Sq | df | Mean Sq | F | Prob>F |
|---|---|---|---|---|---|
| 12 kHz | |||||
| Age | 8.8 | 4 | 2.2 | 24.94 | 2.1 × 10−16 |
| Level (SL) | 31.49 | 3 | 10.5 | 118.9 | 2.6 × 10−42 |
| Age*level | 2.17 | 12 | 0.18 | 2.05 | 2.3 × 10−02 |
| Error | 15.71 | 178 | 0.08 | ||
| Total | 58.7 | 197 | |||
| 30 kHz | |||||
| Age | 3.6 | 4 | 0.91 | 14.19 | 4.6 × 10−10 |
| Level (SL) | 40.04 | 3 | 13.34 | 208.12 | 8.5 × 10−58 |
| Age*level | 2.67 | 12 | 0.22 | 3.47 | 1.3 × 10−04 |
| Error | 11.35 | 177 | 0.06 | ||
| Total | 60.23 | 196 | |||
Shown are results of test of the main effects of age and sound level relative to threshold (sensation level), as well as their interaction, on EFR amplitudes elicited to 1024 Hz AM frequency at two cochlear frequencies using two-way ANOVAs.
Sum Sq, The sum of squares due to each source of variability; df, degrees of freedom associated with each source; mean Sq, mean squares for each source; F, F-statistic; Prob>F, p-value associated with each source.