Table 3.
Results from the linear mixed-effects models.
| Parameter | Estimate (β) | SE | df | t | p |
|---|---|---|---|---|---|
| Model predicting behavioral thresholds | |||||
| Intercept | 41.90 | 1.28 | 5.8 | 32.75 | < .001 |
| Etiology | 6.36 | 2.07 | 7.8 | 3.08 | .016 |
| Electrode configuration | –11.07 | 0.37 | 392.0 | –29.97 | < .001 |
| Electrode site | 0.98 | 0.37 | 392.2 | 2.65 | .008 |
| Etiology × Electrode Site | –2.93 | 0.64 | 392.1 | –4.58 | < .001 |
| Etiology × Configuration | –0.93 | 0.64 | 392.0 | –1.46 | .146 |
| Model predicting electrode impedances | |||||
| Intercept | 4.40 | 0.79 | 7.1 | 5.55 | .001 |
| Etiology | 2.04 | 1.22 | 7.8 | 1.67 | .134 |
| Electrode site | 2.05 | 0.28 | 222.0 | 7.45 | < .001 |
| Etiology × Electrode Site | –1.63 | 0.48 | 222.1 | –3.41 | < .001 |
| Model predicting longitudinal intracochlear resistance | |||||
| Intercept | 2.46 | 0.11 | 7.3 | 22.41 | < .001 |
| Etiology | 0.35 | 0.17 | 9.5 | 1.99 | .076 |
| Electrode site | 0.15 | 0.08 | 208.0 | 2.00 | .047 |
| Etiology × Electrode Site | –0.48 | 0.13 | 208.0 | –3.60 | < .001 |
Note. The lmer function in R calculates t tests using Satterthwaite approximations to degrees of freedom (df). Statistically significant p values are in bold font. Each model included random effects for subject and ear.