Table 4.
Linear mixed effects model examining effects of age and hearing status on RMS error by frequency
| Estimate | St. Error | t (df) | p value | |
|---|---|---|---|---|
| Intercept | 7.62 | 0.76 | 10.05 (132.5) | < .001 |
| Age (years) | −0.09 | 0.02 | −4.42 (103.1) | < .001 |
| PTA (dB HL) | 0.08 | 0.04 | −1.83 (109.4) | 0.07 |
| Age*PTA | 0.002 | 0.001 | 2.24 (106.5) | 0.03 |
| Frequency (reference = 500 Hz) | ||||
| 1000 Hz | 1.04 | 0.43 | 2.41 (625.4) | 0.02 |
| 2000 Hz | 1.37 | 0.43 | 3.17 (625.4) | 0.002 |
| 4000 Hz | 0.77 | 0.77 | 1.78 (625.4) | 0.08 |
| Ear (Left vs. Right) | 0.09 | 0.31 | 0.28 (633.4) | 0.78 |
Note. dB HL = Decibel Hearing Level; Hz = Hertz; PTA = Pure-tone average (of each ear); RMS = Root-mean-square.