Table 2.
Results of the Multiple Regression Analysis of Peak Velocity versus Amplitude and Age
| R2 (Adjusted) | Predictor | b | β | P |
|---|---|---|---|---|
| Fixed far | ||||
| Accommodation | ||||
| 0.85 | A | 2.289 | 0.890 | <0.001 |
| Z | −0.665 | 0.042 | 0.414 | |
| A*Z | −0.142 | 0.035 | 0.456 | |
| Disaccommodation | ||||
| 0.88 | A | 6.795 | 0.964 | <0.001 |
| Z | 6.145 | 0.145 | <0.001 | |
| A*Z | −2.182 | −0.186 | <0.001 | |
| Fixed Near | ||||
| Accommodation | ||||
| 0.76 | A | 2.296 | 0.813 | <0.001 |
| Z | −1.378 | −0.104 | 0.322 | |
| A*Z | −0.201 | −0.046 | 0.639 | |
| Disaccommodation | ||||
| 0.89 | A | 6.120 | 0.930 | <0.001 |
| Z | 3.456 | 0.118 | 0.086 | |
| A*Z | −2.209 | −0.241 | <0.001 | |
| Fixed Amplitude | ||||
| Accommodation | ||||
| 0.39 | A | 2.359 | 0.582 | <0.001 |
| Z | 0.350 | 0.109 | 0.567 | |
| A*Z | −1.186 | −0.435 | 0.023 | |
| Disaccommodation | ||||
| 0.57 | A | 5.763 | 0.766 | <0.001 |
| Z | 1.720 | 0.367 | 0.063 | |
| A*Z | −3.1329 | −0.721 | <0.001 |
R2, coefficient of determination, adjusted for number of predictors; b, unstandardized partial regression coefficient; β, standardized partial regression coefficient; A, amplitude of accommodation/disaccommodation; Z, dummy variable for age group. A*Z, interaction term.